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Products

Höganäs BrazeLet® brazing pastes

Are you looking for an efficient brazing paste solution? You should try Höganäs’ brazing pastes, which have a higher metal content and a minimized polymer content compared to conventional brazing pastes, resulting in more brazed joints per kilogram of paste. Ultimately, you will reduce the maintenance needs for your furnace. Additionally, you will ensure that your brazed parts maintain a high quality.

Our brazing pastes consist of a homogenous mixture of the brazing filler metal powder (normally 85–93 wt%) and a water or oil-based flux-free binder which is removed during brazing. Here at Höganäs, we adapt the paste formula to factors such as the paste application method and furnace conditions. This ensures that you can achieve the best possible brazing results for your application. Our binders have been developed in a way that minimizes their polymer content.

The rheological behaviour of our brazing pastes has been designed to suit the different application methods used. In general, thin layer application methods like roller coating, thin printing or spraying require more liquid formulations, whereas dispensing or thick layer printing require a higher viscosity.

Höganäs' high-quality brazing pastes are based on our broad filler metal selection. Moreover, we offer customized brazing pastes as well as several types of paste packaging to fulfil your exact requirements.

BrazeLet® iron-based stainless brazing pastes

Iron-based brazing alloy

Höganäs’ unique iron-chromium based stainless brazing alloy BrazeLet F86 provides high strength joints when brazing stainless steel materials in vacuum or protective atmospheres (dry hydrogen or argon). The brazing alloy is particularly well suited for brazing heat exchangers with strict requirements on corrosion resistance and metal ion leaching, for example in drinking water or purified water applications, and it is completely copper free. Compared to nickel-based brazing alloys it offers a more attractive and stable cost. Compared to most of the standard nickel-based brazing alloys, BrazeLet F86 is able to fill larger gaps without brittle phase lines or cracks, which leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The water-based brazing paste BrazeLet F86DW-8913 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plate to tube joints. It can be dispensed by using standard air pressure dispensing units. For better precision, screw dispense units are recommended. The paste sticks on all bevel and vertical positions without the need of pre-drying but is easily removed using water.

BrazeLet F86DW-8913 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatisation as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans for refilling of smaller cartridges for manual applications. For best performance, it is recommended to first stir it.

     
 

Nominal composition: Fe – 29Cr – 18Ni – 6.5Si – 6P – 0.5Nb
Powder type: Gas atomised
Melting range: 1050 – 1100 °C
Minimum brazing temperature: 1150 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 3677 B-Fe40CrNiSiP(Nb)-1050/1100

Solvent type: Water
Metal content: 89 wt%
Particle size: <106 µm
Recommended drying temperature: 100 – 170 °C (210 – 340 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 300 Pas (T-spindle D)
Typical density: 4.0 g/cm3

 
     
Iron-based brazing alloy

Höganäs’ unique iron-chromium based stainless brazing alloy BrazeLet F86 provides high strength joints when brazing stainless steel materials in vacuum or protective atmospheres (dry hydrogen or argon). The brazing alloy is particularly well suited for brazing heat exchangers with strict requirements on corrosion resistance and metal ion leaching, for example in drinking water or purified water applications, and it is completely copper free. Compared to nickel-based brazing alloys it offers a more attractive and stable cost. Compared to most of the standard nickel-based brazing alloys, BrazeLet F86 is able to fill larger gaps without brittle phase lines or cracks, which leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet F86P-9003 is typically in use for printing thin paste layers of about 0.05 – 0.2 mm on flat plates, on top of structured plates or fins by use of screens or stencils. A typical application is the printing on parts for flat heat exchangers. The use of rubber squeegees is recommended. Reliable printing requires a precise positioning fixture combined with the use of vacuum table or clamping device. Typical printing speed is 300 mm/s. Thin printing lines should have a width of >0.3 mm, small dots diameter should be >1 mm. The solvent based brazing paste BrazeLet F86P-9003 increases productivity wherever drying of the paste is an issue. The paste has no settlement, and no stirring is required in the equipment. However, when opening a can from stock it is always recommended to stir the paste.

The printed parts can be dried with standard drying process (hot air) at 120 – 170 °C. The drying time varies depending on thermal mass, design of the parts and the used furnace and needs to be established. 

     
 

Nominal composition: Fe – 29Cr – 18Ni – 6.5Si – 6P – 0.5Nb
Powder type: Gas atomised
Melting range: 1050 – 1100 °C
Minimum brazing temperature: 1150 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 3677 B-Fe40CrNiSiP(Nb)-1050/1100

Solvent type: Oil
Metal content: 90 wt%
Particle size: <63 µm
Recommended drying temperature: 120 – 170 °C (250 – 340 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 300 Pas (T-spindle D)
Typical density: 4.0 g/cm3

 
     
Iron-based brazing alloy

Höganäs’ unique and patented iron-chromium based stainless brazing alloy BrazeLet F300-20 offers excellent wetting properties and great corrosion resistance particularly developed for brazing of stainless steel materials in vacuum or protective atmospheres (dry hydrogen or argon). With excellent wetting properties, low brazing temperature and high corrosion and oxidation resistance it is a good choice for automotive and industrial heat exchangers. It is well suited for drinking water applications with strict requirements on metal ion leaching. Compared to nickel-based brazing alloys it offers a more attractive and stable cost. Compared to most of the standard nickel-based brazing alloys, BrazeLet F300-20 is able to fill larger gaps without brittle phase lines or cracks, which leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The water-based brazing paste BrazeLet F300DW-9007 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plates to tube joints. It dries quickly and sticks to all bevel and vertical positions without the need of pre-drying. It can be easily removed with water. The paste has a very low polymer content and the binder is specially designed to decompose cleanly at low temperatures, as to minimise need for furnace maintenance, while preventing pre-oxidation of brazing filler metal powder in marginal furnace atmospheres. It shows extremely good residue-free brazing results in both vacuum and continuous belt furnace brazing. 

BrazeLet F300DW-9007 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatisation as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans. It can be frozen and brought back to room temperature for use without any damage to its properties.

     
 

Nominal composition: Fe – 20Ni – 20Cr – 7P – 6.5Cu – 4Si 
Powder type: Gas atomised
Melting range: 1025 – 1060 °C
Minimum brazing temperature: 1100 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 3677 B-Fe42CrNiPCuSi-1025/1060

Solvent type: Water
Metal content: 90 wt%
Particle size: <106 µm
Recommended drying temperature: RT – 170 °C (RT – 340 °F)
Evaporation temperature of binder: 250 – 300 °C (480 – 570 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 1000 Pas (T-spindle E)
Typical density: 4.5 g/cm3

 
     
Iron-based brazing alloy

Höganäs’ unique and patented iron-chromium based stainless brazing alloy BrazeLet F300-20 offers excellent wetting properties and great corrosion resistance particularly developed for brazing of stainless steel materials in vacuum or protective atmospheres (dry hydrogen or argon). With excellent wetting properties, low brazing temperature and high corrosion and oxidation resistance it is a good choice for automotive and industrial heat exchangers. It is well suited for drinking water applications with strict requirements on metal ion leaching. Compared to nickel-based brazing alloys it offers a more attractive and stable cost. Compared to most of the standard nickel-based brazing alloys, BrazeLet F300-20 is able to fill larger gaps without brittle phase lines or cracks, which leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet F300DW-9201 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plate to tube joints. It can be dispensed by using standard air pressure dispensing units. For better precision, screw dispense units are recommended. The paste sticks on all bevel positions without the need of pre-drying but is easily removed using water. The paste formulation offers the highest metal content of our standard dispensing pastes.

BrazeLet F300DW-9201 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatisation as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans for refilling of smaller cartridges for manual applications. For best performance, it is recommended to first stir the paste.

     
 

Nominal composition: Fe – 20Ni – 20Cr – 7P – 6.5Cu – 4Si 
Powder type: Gas atomised
Melting range: 1025 – 1060 °C
Minimum brazing temperature: 1100 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 3677 B-Fe42CrNiPCuSi-1025/1060

Solvent type: Water-born
Metal content: 92 wt%
Particle size: <106 µm
Recommended drying temperature: 120 – 150 °C (250 – 300 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 1000 Pas (T-spindle E)
Typical density: 4.6 g/cm3

 
     
Iron-based brazing alloy

Höganäs’ unique and patented iron-chromium based stainless brazing alloy BrazeLet F300-20 offers excellent wetting properties and great corrosion resistance particularly developed for brazing of stainless steel materials in vacuum or protective atmospheres (dry hydrogen or argon). With excellent wetting properties, low brazing temperature and high corrosion and oxidation resistance it is a good choice for automotive and industrial heat exchangers. It is well suited for drinking water applications with strict requirements on metal ion leaching. Compared to nickel-based brazing alloys it offers a more attractive and stable cost. Compared to most of the standard nickel-based brazing alloys, BrazeLet F300-20 is able to fill larger gaps without brittle phase lines or cracks, which leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet F300P-9002 is typically in use for printing thin paste layers of about 0.05 – 0.2 mm on flat plates, on top of structured plates or fins by use of screens or stencils. A typical application is the printing on parts for flat heat exchangers. The use of rubber squeegees is recommended. Reliable printing requires a precise positioning fixture combined with the use of vacuum table or clamping device. Typical printing speed is 300 mm/s. Thin printing lines should have a width of >0.3 mm, small dots diameter should be >1 mm. The solvent based brazing paste BrazeLet F300P-9002 increases productivity wherever drying of the paste is an issue. The paste has no settlement, and no stirring is required in the equipment. However, when opening a can from stock it is always recommended to stir the paste.

The printed parts can be dried with standard drying process (hot air) at 120 – 170 °C. The drying time varies depending on thermal mass, design of the parts and the used furnace and needs to be established. After drying, the paste has excellent adhesion to the metal sheet.

     
 

 

Nominal composition: Fe – 20Ni – 20Cr – 7P – 6.5Cu – 4Si 
Powder type: Gas atomised
Melting range: 1025 – 1060 °C
Minimum brazing temperature: 1100 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 3677 B-Fe42CrNiPCuSi-1025/1060

Solvent type: Oil
Metal content: 90 wt%
Particle size: <63 µm
Recommended drying temperature: 120 – 170 °C (250 – 340 °F)
Evaporation temperature of binder: 350 – 450 °C (660 – 840 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 300 Pas (T-spindle D)
Typical density: 4.0 g/cm3

 

 
     
Iron-based brazing alloy

Höganäs’ unique and patented iron-chromium based stainless brazing alloy BrazeLet F300-20 offers excellent wetting properties and great corrosion resistance particularly developed for brazing of stainless steel materials in vacuum or protective atmospheres (dry hydrogen or argon). With excellent wetting properties, low brazing temperature and high corrosion and oxidation resistance it is a good choice for automotive and industrial heat exchangers. It is well suited for drinking water applications with strict requirements on metal ion leaching. Compared to nickel-based brazing alloys it offers a more attractive and stable cost. Compared to most of the standard nickel-based brazing alloys, BrazeLet F300-20 is able to fill larger gaps without brittle phase lines or cracks, which leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet F300P-9003 is typically in use for printing thin paste layers of about 0.05 – 0.2 mm on flat plates, on top of structured plates or fins by use of screens or stencils. A typical application is the printing on parts for flat heat exchangers. The use of rubber squeegees is recommended. Reliable printing requires a precise positioning fixture combined with the use of vacuum table or clamping device. Typical printing speed is 300 mm/s. Thin printing lines should have a width of >0.3 mm, small dots diameter should be >1 mm. The solvent based brazing paste BrazeLet F300P-9003 increases productivity wherever drying of the paste is an issue. The paste has no settlement, and no stirring is required in the equipment. However, when opening a can from stock it is always recommended to stir the paste.

The printed parts can be dried with standard drying process (hot air) at 120 – 170 °C. The drying time varies depending on thermal mass, design of the parts and the used furnace and needs to be established. 

     
 

Nominal composition: Fe – 20Ni – 20Cr – 7P – 6.5Cu – 4Si 
Powder type: Gas atomised
Melting range: 1025 – 1060 °C
Minimum brazing temperature: 1100 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 3677 B-Fe42CrNiPCuSi-1025/1060

Solvent type: Oil
Metal content: 90 wt%
Particle size: <63 µm
Recommended drying temperature: 120 – 170 °C (250 – 340 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 300 Pas (T-spindle D)
Typical density: 4.0 g/cm3

 
     
Iron-based brazing alloy

Höganäs’ unique and patented iron-chromium based stainless brazing alloy BrazeLet F300-20 offers excellent wetting properties and great corrosion resistance particularly developed for brazing of stainless steel materials in vacuum or protective atmospheres (dry hydrogen or argon). With excellent wetting properties, low brazing temperature and high corrosion and oxidation resistance it is a good choice for automotive and industrial heat exchangers. It is well suited for drinking water applications with strict requirements on metal ion leaching. Compared to nickel-based brazing alloys it offers a more attractive and stable cost. Compared to most of the standard nickel-based brazing alloys, BrazeLet F300-20 is able to fill larger gaps without brittle phase lines or cracks, which leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet F300P-9012 is typically in use for printing thick paste layers of about 0.2 to 0.6 mm on flat parts or on top of structured parts by use of screens or stencils. A typical application is printing of paste on hole plates of tube bundled heat exchangers. The use of rubber squeegees is recommended. Reliable printing requires precise positioning fixture tool by use of vacuum table or clamping device. Typical printing speed is 100 mm/s. Thin printing lines should at least have a width twice the printing thickness and the small dots diameter should be three times the printing thickness or greater. Printing accuracy is very precise as the paste maintains its shape during drying. 

The solvent based BrazeLet F300P-9012 increases productivity wherever drying of the paste is an issue. It has no settlement, and no stirring is needed in the equipment. However, when opening a can from stock it is always recommended to stir the paste. The printed parts can be dried with standard drying process (hot air) at 120 – 170 °C. Here, the drying time needs to be established as it varies depending on thermal mass, parts design and the used furnace. After drying, the paste has excellent adhesion to the metal sheet.

     
 

Nominal composition: Fe – 20Ni – 20Cr – 7P – 6.5Cu – 4Si 
Powder type: Gas atomised
Melting range: 1025 – 1060 °C
Minimum brazing temperature: 1100 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 3677 B-Fe42CrNiPCuSi-1025/1060

Solvent type: Oil
Metal content: 90 wt%
Particle size: <106 µm
Recommended drying temperature: 120 – 170 °C (250 – 340 °F)
Evaporation temperature of binder: 350 – 450 °C (660 – 840 °F)
Typical Brookfield viscosity: (2.5 rpm @ 20 °C): 300 Pas (T-spindle D)
Typical density: 4.0 g/cm3

 
     
Iron-based brazing alloy

Höganäs’ unique and patented iron-chromium based stainless brazing alloy BrazeLet F300-20 offers excellent wetting properties and great corrosion resistance particularly developed for brazing of stainless steel materials in vacuum or protective atmospheres (dry hydrogen or argon). With excellent wetting properties, low brazing temperature and high corrosion and oxidation resistance it is a good choice for automotive and industrial heat exchangers. It is well suited for drinking water applications with strict requirements on metal ion leaching. Compared to nickel-based brazing alloys it offers a more attractive and stable cost. Compared to most of the standard nickel-based brazing alloys, BrazeLet F300-20 is able to fill larger gaps without brittle phase lines or cracks, which leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet F300R-9003 can be used for roller coating fins or structured plates, typically found in flat heat exchanger designs. Depending on type of roller used the paste can be applied with thin layers either on top or on the side of the fin tips. Gap size between the paste roll and the scraper of 0.08 – 0.12 mm is recommended. The amount of paste is controlled by weight and is a function of the fins or structured plate design. BrazeLet F300R-9003 properties allow reliable application in a wide range of coating speeds, tested with good results from 3 m/min up to 20 m/min. The oil-based paste ensures reliable coating over time without drying on the roll. BrazeLet F300R-9003 has higher metal content and lower binder content compared to standard roller coating pastes, which decreases packaging and transportation needs for the same amount of brazing filler metal.

The coated fins can be dried with standard drying process (hot air) at 120 – 170 °C. The drying time depends on thermal mass, parts design and the used furnace and thus needs to be established. When dried, the paste has excellent adhesion to the metal sheet.

     
 

Nominal composition: Fe – 20Ni – 20Cr – 7P – 6.5Cu – 4Si 
Powder type: Gas atomised
Melting range: 1025 – 1060 °C
Minimum brazing temperature: 1100 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 3677 B-Fe42CrNiPCuSi-1025/1060

Solvent type: Oil
Metal content: 90 wt%
Particle size: <63 µm
Recommended drying temperature: 120 – 170 °C (250 – 340 °F)
Evaporation temperature of binder: 350 – 450 °C (660 – 840 °F)
Typical Brookfield viscosity: (2.5 rpm @ 20 °C): 100 Pas (T-spindle C)
Typical density: 4.0 g/cm3

 
     
Iron-based brazing alloy

Höganäs’ unique and patented iron-chromium based stainless brazing alloy BrazeLet F300-20 offers excellent wetting properties and great corrosion resistance particularly developed for brazing of stainless steel materials in vacuum or protective atmospheres (dry hydrogen or argon). With excellent wetting properties, low brazing temperature and high corrosion and oxidation resistance it is a good choice for automotive and industrial heat exchangers. It is well suited for drinking water applications with strict requirements on metal ion leaching. Compared to nickel-based brazing alloys it offers a more attractive and stable cost. Compared to most of the standard nickel-based brazing alloys, BrazeLet F300-20 is able to fill larger gaps without brittle phase lines or cracks, which leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The solvent based brazing paste BrazeLet F300S-8701 can be used for spraying structured plates, typically found in flat heat exchanger designs. It ensures reliable coating over time without drying the spraying nozzles. BrazeLet F300S-8701 has no settlement, and no stirring is needed in the equipment. However, when opening a can from stock it is always recommended to stir the paste.

The sprayed parts can be dried with standard drying process (hot air) at 120 – 170 °C. The drying time depends on thermal mass, parts design and the used furnace and thus needs to be established. After drying, the paste has excellent adhesion to the metal sheet.

     
 

Nominal composition: Fe – 20Ni – 20Cr – 7P – 6.5Cu – 4Si 
Powder type: Gas atomised
Melting range: 1025 – 1060 °C
Minimum brazing temperature: 1100 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 3677 B-Fe42CrNiPCuSi-1025/1060

Solvent type: Oil
Metal content: 87 wt%
Particle size: <63 µm
Recommended drying temperature: 120 – 170 °C (250 – 340 °F)
Evaporation temperature of binder: 350 – 450 °C (660 – 840 °F)
Typical Brookfield viscosity: (2.5 rpm @ 20 °C): 25 Pas (T-spindle B)
Typical density: 3.6 g/cm3

 
     

BrazeLet® nickel-based brazing pastes

Nickel-based brazing alloy

The nickel-based brazing alloy BrazeLet BNi2 provides high strength when brazing stainless steel material in vacuum or protective atmospheres (hydrogen or argon). It provides excellent high temperature strength and oxidation resistance. Joint properties can be further improved by employing a diffusion hold after brazing. It is a versatile brazing filler metal used in aerospace, automotive and industrial applications such as heat exchangers and turbines.

The brazing paste BrazeLet Ni2DW-9201 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plate to tube joints. It can be dispensed by using standard air pressure dispensing units. For better precision, screw dispense units are recommended. The paste sticks on all bevel positions without the need of pre-drying but is easily removed using water. The paste formulation offers the highest metal content of our standard dispensing pastes.

BrazeLet Ni2DW-9201 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatisation as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans for refilling of smaller cartridges for manual applications. For best performance, it is recommended to first stir the paste.

     
 

Nominal composition: Ni – 7Cr – 4.5Si – 3Fe – 3B
Powder type: Gas atomised
Melting range: 970 – 1000 °C
Minimum brazing temperature: 1050 °C
Recommended gap clearance: 30 – 100 µm
Applicable specifications: AMS4777, ISO 17672 Ni620, AWS A5.8M/A5.8 BNi-2, ISO 3677 B-Ni82CrSiBFe-970/1000

Solvent type: Water-born
Metal content: 92 wt%
Particle size: <106 µm
Recommended drying temperature: 120 – 150 °C (250 – 300 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 1000 Pas (T-spindle E)
Typical density: 4.6 g/cm3

 
     
Nickel-based brazing alloy

The nickel-based brazing alloy BrazeLet BNi5 has good wetting behaviour on stainless steels and nickel-based superalloys and is suitable for brazing in vacuum or protective atmospheres (hydrogen or argon). The high level of alloyed chromium results in a good hot gas and acid corrosion resistance. The high melting range of BrazeLet BNi5 makes it suitable for applications working at very high temperatures, for instance EGR coolers for trucks, automotive metal catalytic converters and turbine vanes. It is also a commonly used filler material for industrial heat exchangers. Joint properties can be further improved by employing a diffusion hold after brazing.

The brazing paste BrazeLet Ni5DW-9201 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plate to tube joints. It can be dispensed by using standard air pressure dispensing units. For better precision, screw dispense units are recommended. The paste sticks on all bevel positions without the need of pre-drying but is easily removed using water. The paste formulation offers the highest metal content of our standard dispensing pastes.

BrazeLet Ni5DW-9201 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatisation as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans for refilling of smaller cartridges for manual applications. For best performance, it is recommended to first stir the paste.

     
 

Nominal composition: Ni – 19Cr – 10.1Si
Powder type: Gas atomised
Melting range: 1080 – 1135 °C
Minimum brazing temperature: 1150 °C
Recommended gap clearance: 30 – 100 µm
Applicable specifications: AMS4782, ISO 17672 Ni650, AWS A5.8M/A5.8 BNi-5, GE B50TF81, ISO 3677 B-Ni71CrSi-1080/1135

Solvent type: Water-born
Metal content: 92 wt%
Particle size: <106 µm
Recommended drying temperature: 120 – 150 °C (250 – 300 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 1000 Pas (T-spindle E)
Typical density: 4.6 g/cm3

 
     
Nickel-based brazing alloy

The nickel-based brazing alloy BrazeLet BNi7 is a free-flowing material suitable for brazing stainless steels. It is suitable for brazing in vacuum or protective atmospheres (dry hydrogen or argon). It allows brazing at lower temperatures than most of the other nickel-based brazing alloys. It is particularly suitable for brazing deep narrow joints as it maintains the excellent flowability with limited P diffusion into most base materials. It is recommended that gaps do not exceed 30 µm as wider gaps risk the formation of a crack-sensitive brittle centre line. Typical applications for this brazing alloy include thin-walled components such as honeycomb seals, industrial heat exchangers and tubular heating elements for drinking water applications.

The brazing paste BrazeLet Ni7DW-9201 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plate to tube joints. It can be dispensed by using standard air pressure dispensing units. For better precision, screw dispense units are recommended. The paste sticks on all bevel positions without the need of pre-drying but is easily removed using water. The paste formulation offers the highest metal content of our standard dispensing pastes.

BrazeLet Ni7DW-9201 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatization as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans for refilling of smaller cartridges for manual applications. For best performance, it is recommended to first stir the paste.

     
 

Nominal composition: Ni – 14Cr – 10.1P
Powder type: Gas atomised
Melting range: 890 °C
Minimum brazing temperature: 980 °C
Recommended gap clearance: 0 – 30 µm
Applicable specifications: ISO 17672 Ni710, AWS A5.8M/A5.8 BNi-7, ISO 3677 B-Ni76CrP-890

Solvent type: Water-born
Metal content: 92 wt%
Particle size: <106 µm
Recommended drying temperature: 120 – 150 °C (250 – 300 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 1000 Pas (T-spindle E)
Typical density: 4.6 g/cm3

 
     
Nickel-based brazing alloy

The nickel-based brazing alloy BrazeLet Ni613, features a best in class wetting behaviour on stainless steel material in vacuum or protective atmosphere (dry hydrogen or argon). Its high level of alloyed chromium results in a superior hot gas and acid corrosion resistance. The brazing alloy is best suited for brazing heat exchangers such as exhaust gas recirculation (EGR) coolers in automotive or drinking water applications. Compared to most of the standard nickel-based brazing alloys, BrazeLet Ni613 is able to fill larger gaps without brittle phase lines or cracks. The resulting micro hardness in the brazed joint microstructure is less than half when compared to BrazeLet BNi5. This leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet Ni613D-9004 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plate to tube joints. It can be dispensed by using standard air pressure dispensing units. For better precision, screw dispense units are recommended. The paste sticks on all bevel and vertical positions without the need of pre-drying but is easily removed using aliphatic solvents.

BrazeLet Ni613D-9004 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatisation as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans for refilling of smaller cartridges for manual applications. It has no settlements. However, when opening a can from stock it is always recommended to stir the paste.

     
 

Nominal composition: Ni – 29Cr – 6P – 4Si
Powder type: Gas atomised
Melting range: 970 – 1030 °C
Minimum brazing temperature: 1090 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 17672 Ni740, AWS A5.8M/A5.8 BNi-15, ISO 3677 B-Ni60CrPSi-970/1030

Solvent type: Oil
Metal content: 90 wt%
Particle size: <106 µm
Recommended drying temperature: 120 – 170 °C (250 – 340 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 400 Pas (T-spindle D)
Typical density: 4.0 g/cm3

 
     
Nickel-based brazing alloy

The nickel-based brazing alloy BrazeLet Ni613, features a best in class wetting behaviour on stainless steel material in vacuum or protective atmosphere (dry hydrogen or argon). Its high level of alloyed chromium results in a superior hot gas and acid corrosion resistance. The brazing alloy is best suited for brazing heat exchangers such as exhaust gas recirculation (EGR) coolers in automotive or drinking water applications. Compared to most of the standard nickel-based brazing alloys, BrazeLet Ni613 is able to fill larger gaps without brittle phase lines or cracks. The resulting micro hardness in the brazed joint microstructure is less than half when compared to BrazeLet BNi5. This leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The water-based brazing paste BrazeLet Ni613DW-9003 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plate to tube joints. It can be dispensed by using standard air pressure dispensing units. For better precision, screw dispense units are recommended. The paste sticks on all bevel and vertical positions without the need of pre-drying but is easily removed using water.

BrazeLet Ni613DW-9003 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatisation as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans for refilling of smaller cartridges for manual applications. For best performance, it is recommended to first stir it.

     
 

Nominal composition: Ni – 29Cr – 6P – 4Si
Powder type: Gas atomised
Melting range: 970 – 1030 °C
Minimum brazing temperature: 1090 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 17672 Ni740, AWS A5.8M/A5.8 BNi-15, ISO 3677 B-Ni60CrPSi-970/1030

Solvent type: Water
Metal content: 90 wt%
Particle size: <106 µm
Recommended drying temperature: 100 – 170 °C (210 – 340 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 300 Pas (T-spindle D)
Typical density: 4.2 g/cm3

 
     
Nickel-based brazing alloy

The nickel-based brazing alloy BrazeLet Ni613, features a best in class wetting behaviour on stainless steel material in vacuum or protective atmosphere (dry hydrogen or argon). Its high level of alloyed chromium results in a superior hot gas and acid corrosion resistance. The brazing alloy is best suited for brazing heat exchangers such as exhaust gas recirculation (EGR) coolers in automotive or drinking water applications. Compared to most of the standard nickel-based brazing alloys, BrazeLet Ni613 is able to fill larger gaps without brittle phase lines or cracks. The resulting micro hardness in the brazed joint microstructure is less than half when compared to BrazeLet BNi5. This leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet Ni613DW-9201 can be used for dispensing applications, typically found on heat exchanger inlet and outlet tubes, housing to core joints and hole plate to tube joints. It can be dispensed by using standard air pressure dispensing units. For better precision, screw dispense units are recommended. The paste sticks on all bevel positions without the need of pre-drying but is easily removed using water. The paste formulation offers the highest metal content of our standard dispensing pastes.

BrazeLet Ni613DW-9201 properties allow reliable application in a wide speed range as a result of the dispensing equipment / automatisation as well as the needle diameter. The paste can be delivered in cartridges for use in automated applications or different sized cans for refilling of smaller cartridges for manual applications. For best performance, it is recommended to first stir the paste.

     
 

Nominal composition: Ni – 29Cr – 6P – 4Si
Powder type: Gas atomised
Melting range: 970 – 1030 °C
Minimum brazing temperature: 1090 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 17672 Ni740, AWS A5.8M/A5.8 BNi-15, ISO 3677 B-Ni60CrPSi-970/1030

Solvent type: Water-born
Metal content: 92 wt%
Particle size: <106 µm
Recommended drying temperature: 120 – 150 °C (250 – 300 °F)
Evaporation temperature of binder: 300 – 400 °C (570 – 750 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 1000 Pas (T-spindle E)
Typical density: 4.6 g/cm3

 
     
Nickel-based brazing alloy

The nickel-based brazing alloy BrazeLet Ni613, features a best in class wetting behaviour on stainless steel material in vacuum or protective atmosphere (dry hydrogen or argon). Its high level of alloyed chromium results in a superior hot gas and acid corrosion resistance. The brazing alloy is best suited for brazing heat exchangers such as exhaust gas recirculation (EGR) coolers in automotive or drinking water applications. Compared to most of the standard nickel-based brazing alloys, BrazeLet Ni613 is able to fill larger gaps without brittle phase lines or cracks. The resulting micro hardness in the brazed joint microstructure is less than half when compared to BrazeLet BNi5. This leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet Ni613P-9012 is typically in use for printing thick paste layers of about 0.2 to 0.6 mm on flat parts or on top of structured parts by use of screens or stencils. A typical application is printing of paste on hole plates of tube bundled heat exchangers. The use of rubber squeegees is recommended. Reliable printing requires precise positioning fixture tool by use of vacuum table or clamping device. Typical printing speed is 100 mm/s. Thin printing lines should at least have a width twice the printing thickness and the small dots diameter should be three times the printing thickness or greater. Printing accuracy is very precise as the paste maintains its shape during drying.
 
The solvent based BrazeLet Ni613P-9012 increases productivity wherever drying of the paste is an issue. It has no settlement, and no stirring is needed in the equipment. However, when opening a can from stock it is always recommended to stir the paste. The printed parts can be dried with standard drying process (hot air) at 120 – 170 °C. Here, the drying time needs to be established as it varies depending on thermal mass, parts design and the used furnace. After drying, the paste has excellent adhesion to the metal sheet.

     
 

Nominal composition: Ni – 29Cr – 6P – 4Si
Powder type: Gas atomised
Melting range: 970 – 1030 °C
Minimum brazing temperature: 1090 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 17672 Ni740, AWS A5.8M/A5.8 BNi-15, ISO 3677 B-Ni60CrPSi-970/1030

Solvent type: Oil
Metal content: 90 wt%
Particle size: <106 µm
Recommended drying temperature: 120 – 170 °C (250 – 340 °F)
Evaporation temperature of binder: 350 – 450 °C (660 – 840 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 300 Pas (T-spindle D)
Typical density: 4.0 g/cm3

 
     
Nickel-based brazing alloy

The nickel-based brazing alloy BrazeLet Ni613, features a best in class wetting behaviour on stainless steel material in vacuum or protective atmosphere (dry hydrogen or argon). Its high level of alloyed chromium results in a superior hot gas and acid corrosion resistance. The brazing alloy is best suited for brazing heat exchangers such as exhaust gas recirculation (EGR) coolers in automotive or drinking water applications. Compared to most of the standard nickel-based brazing alloys, BrazeLet Ni613 is able to fill larger gaps without brittle phase lines or cracks. The resulting micro hardness in the brazed joint microstructure is less than half when compared to BrazeLet BNi5. This leads to a more reliable and safe brazing as well as more flexibility in part tolerances.

The brazing paste BrazeLet Ni613R-9003 can be used for roller coating fins or structured plates, typically found in flat heat exchanger designs. Depending on type of roller used the paste can be applied with thin layers either on top or on the side of the fin tips. Gap size between the paste roll and the scraper of 0.08 – 0.12 mm is recommended. The amount of paste is controlled by weight and is a function of the fins or structured plate design. BrazeLet Ni613R-9003 properties allow reliable application in a wide range of coating speeds, tested with good results from 3 m/min up to 20 m/min. The oil-based paste ensures reliable coating over time without drying on the roll. BrazeLet Ni613R-9003 has higher metal content and lower binder content compared to standard roller coating pastes, which decreases packaging and transportation needs for the same amount of brazing filler metal.

The coated fins can be dried with standard drying process (hot air) at 120 – 170 °C. The drying time depends on thermal mass, parts design and the used furnace and thus needs to be established. When dried, the paste has excellent adhesion to the metal sheet.

     
 

Nominal composition: Ni – 29Cr – 6P – 4Si
Powder type: Gas atomised
Melting range: 970 – 1030 °C
Minimum brazing temperature: 1090 °C
Recommended gap clearance: 25 – 150 µm
Applicable specifications: ISO 17672 Ni740, AWS A5.8M/A5.8 BNi-15, ISO 3677 B-Ni60CrPSi-970/1030

Solvent type: Oil
Metal content: 90 wt%
Particle size: <63 µm
Recommended drying temperature: 120 – 170 °C (250 – 340 °F)
Evaporation temperature of binder: 350 – 450 °C (660 – 840 °F)
Typical Brookfield viscosity (2.5 rpm @ 20 °C): 100 Pas (T-spindle C)
Typical density: 4.0 g/cm3

 
     

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