15Cr-5Ni

15Cr-5Ni is a martensitic precipitation hardening stainless steel offering high strength and hardness along with excellent corrosion resistance. Generally similar to Custom 630 (17Cr-4Ni) in composition and properties, 15Cr-5Ni is chemically balanced to eliminate all but trace amounts of delta ferrite, thus providing superior transverse toughness and ductility plus a high degree of forgeability. Its fabrication characteristics are similar to those of other precipitation hardening stainlesses, and it can be aged-hardened by a single step, low temperature treatment.