Alro stocks 15-5 PH, ESR, Type 2, Condition A Stainless Steel. AMS 565 stainless steel - a grade known for being tough and ductile with good strength. The corrosion resistance of 15-5 PH ESR Stainless Steel is similar to that of stainless steel type 304. It is most often used in demanding applications such as high-pressure corrosive environments and for aircraft components. Hot working with type 15-5 PH Stainless Steel is preferable to cold working but it does exhibit moderate formability in cold working. Stainless Steel 15-5 PH is a precipitation hardening martensitic stainless steel.

Alro stocks 15-5 PH from 1/2" to 4" rounds with AMS 5659 specification for bars and forgings. 15-5 PH is Condition A: solution annealed and ready for further heat treatment.  15-5 PH is produced using the Electro Slag Remelt (ESR) process, which is classified as Type 2.

Is 15-5 PH ESR Similar to 17-4 Stainless Steel?

15-5 PH, ESR, Type 2, Condition A Stainless Steel. AMS 565 is a variant of the older 17-4 chromium-nickel-copper precipitation hardening stainless steel. Both alloys exhibit high strength and moderate corrosion resistance, with high strength maintained to approximately 600 degrees F.  The 15-5 PH alloy was designed to have greater toughness than 17-4 stainless steel. The improved toughness of 15-5 is achieved through reduced delta ferrite content and control of inclusion size and shape. It is used in demanding applications, particularly in the aerospace industry, and also in marine, defense, and chemical processing applications for components like aircraft parts, shafts, valves, and fasteners.

About 15-5 PH, ESR Specifications

15-5 PH stainless steel is a High-strength, corrosion-resistant stainless steel alloy (UNS S15500). It meets the AMS 5659 specification for bars and forgings. 15-5 PH is in Condition A, meaning it is solution annealed and ready for further heat treatment, and it was produced using the Electro Slag Remelt (ESR) process, which is classified as Type 2.