What is AMS 5604?
17-4 PH steel (AMS 5604) is a grade of martensitic, precipitation-hardening stainless steel with the additions of chromium, nickel, and copper. 17-4 stainless steel has a valuable combination of high strength, good corrosion resistance, and toughness in both base metals and welds.
What type of material is 17-4 PH?
martensitic stainless steel
Alloy 17-4PH (UNS S17400), Type 630, is a chromium-nickel-copper precipitation-hardening martensitic stainless steel with an addition of niobium. 17-4PH combines high strength and hardness with good corrosion resistance. The alloy is furnished in the solution annealed condition (Condition A).
How do you precipitation hardened stainless steel?
A typical cycle might consist of heating to very high temperatures, 995°C (1750°F); cooling to -75°C (100°F) to effect the transformation to a martensitic structure; holding for three to eight hours, then precipitation-hardening between 450 and 565°C (840 and 1050°F) for 60 to 90 minutes; followed by air cooling.
Why is precipitation hardening used?
Precipitation hardening, also called age hardening or particle hardening, is a heat treatment technique used to increase the yield strength of malleable materials, including most structural alloys of aluminium, magnesium, nickel, titanium, and some steels and stainless steels.