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17-4PH grade steel is a precipitation hardening stainless steel with excellent corrosion resistance, superior to martensitic grades such as 431 and 410, and comparable to austenitic grade 304.
It is heat treated by age hardening and has the potential for very high strengths (between 40-47HRc in the H900 condition). The ageing process should be controlled as it may affect the material’s corrosion resistance.
Arc and resistance welding processes used on standard grades of stainless steel are applicable to 17-4PH stainless steel. The low hardness enables sections up to 100mm to be welded without pre heating.
Rolled or Forged
Black Bar or Bright Bar