Introduction: Type 630 is commonly referred to as 17-4 and is a precipitation-hardening martensitic stainless steel supplied in Hot Rolled and Cold Finished condition_ It contains 17% chromium and 4% nickel, which makes it superior in corrosion resistance to the regular chromium-type martensitic stainless steels.
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Steel GradesAISI 630 Chemical information,Mechanical properties Physical properties, Mechanical properties, Heat treatment, and Micro structure ψ - ψ≥(%) Akv - Akv≥/J HBS 235-268 - HRC 30 - AISI 630 Heat Treatment Regime Annealing Quenching Tempering
AISI 630 / S17400 / 17-4PH is a Precipitation Hardening Martensitic Stainless steel with an addition of Nb/Cu elements. AMS 5643 Combines High Strength, hardness (up to HRC40), and corrosion resistance Available forms round bar, flat bar, plate, sheet, and forging pieces. MATERIAL TECHNICAL DATASHEET - Grade AISI 630.