17-4 PH


17-4 PH (UNS S17400) - Precipitation hardneable stainless steel

17-4 PH is a martensitic precipitation hardenable chromium-nickel-copper steel with high strength and toughness. Mechanical properites of 17-4 PH can be further increased through cold-working followed by precipitation hardening. 17-4 PH is applied in products in aircrat and rocket engineering, mechanical engineering, power generation, measuring and control technique.

17-4 PH can be provided in three qualities:

  • conventional melting route
  • ESR route
  • VMR route


Chemical Properties (% Average)

C Si Mn Cr Ni Cu Nb  
0.04 0.25 0.40 15.30 4.50 3.25 0.30  


Material Conditions

  • Solution Annealed Condition

Bohler Pacific is able to provide 17-4 PH in various conditions and dimensions according to your needs.
We are looking forward to hear from you.