17-4 PH/H900/H1025/H1075/H1150 

17-4 PH is a martensitic precipitation age-hardening stainless steel with high strength and hardness, and good corrosion resistance. 17-4 PH is used in a variety of applications including medical instruments, chemical processing equipment, gears, nuclear reactor components, and jet engine parts. 

The material is typically supplied from the mill in the annealed condition, however, 17-4 PH is often heat treated.  

Common heat treatment conditions and approximate mechanical properties for 17-4 PH.

17-4 PH has good machinability. In the annealed condition 17-4 PH machines similarly to 304 and the machinability improves as the age-hardening temperature increases.

In most environments 17-4 PH corrosion resistance is superior to that of 400 series hardenable stainless steels and approaches corrosion resistant levels of 302 and 304.   

Chemical Composition of 17-4 PH

Specifications include ASTM A564, ASTM A693 (Strip), ASTM A705, ASTM F899, AMS 5643. 

 

17-4 PH Summary Information

Specs Markets Applications Forms
ASTM A564, ASTM A693 (Strip), ASTM A705, ASTM F899, ASTM 5643 Medical, Aerospace, Industrial, Oil and Gas, Pump and Boat Shaft, Seals, Valves, Petrochemical, Food Processing Aerospace Structural Parts Surgical & Dental Instrumentation Industrial Parts Bar

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