One Minute Mentor: Case Hardening

Powder metallurgy parts are case hardened to obtain higher hardness, wear, fatigue, and impact properties. The primary purpose of case hardening low-carbon steels is to provide a hard, wear-resistant surface while maintaining a soft ductile core. This combination imparts optimum wear resistance and toughness properties to these material

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One Minute Mentor: Steam treatment of powder metallurgy parts

The steam treatment of powder metallurgy parts help to both seal surface porosity and to increase surface hardness, which improves corrosion resistance, pressure tightness, and wear resistance. Unfortunately, it also reduces tensile strength and ductility from 10 to 20%, depending on conditions and the steel.

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