Properties of Cr-alloyed PM Steel after Different Sintering and Heat Treatment Operations
Water-atomized steel powder grades pre-alloyed with Cr are cost effective, robust and versatile materials which are suitable for PM steel parts in demanding structural applications. By choosing the right processing route, these materials enable efficient manufacturing of PM components with high mechanical performance. In this paper properties obtained after different sintering and heat treatment operations are presented for two different Cr-alloyed steel powder grades. Results from high temperature sintering, sinter-hardening and low pressure carburizing tests are reviewed with focus on static mechanical data, bending fatigue properties and microstructures.