17/4PH

This material is a precipitation hardenting martensitic stainless steel, containing copper.

Chemical Composition

  C Si Mn P S Cr Ni Cu Nb+Ta
Min - - - - - 15.00 3.00 3.00 0.15
Max 0.07 1.00 1.00 0.040 0.030 17.50 5.00 5.00 0.45

Mechanical Properties

Condition Solution Treated & Aged
UTS 125KSI min
0.2% Proof Stress 105KSI min
Elongation 18% min
Reduction of Area 50% min

General Scope

An extremely versatile material it is commonly used in stems and shafts due to its high strength.

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