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Description

USA 17-4PH Martensitic special steel and 17-4PH Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Steel: 17-4PH
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Steel 17-4PH USA Martensitic special steel
S15700
PH15-7MO(Type632)
PH15-7MO(Type632)
15-5PH
15-5PH
S15500
S15500
S17400
S17400
17-4PH

Chemical composition(mass fraction)(wt.%) of the 17-4PH

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Cu(%) Nb(%)
0.07 1 1 Max 0.04 Max 0.03 15.5-17.5 3.00-5.00 3.00-5.00 0.15-0.45

Mechanical Properties of steel grade 17-4PH

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
342 (≥) 884 (≥) 34 34 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade 17-4PH

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
21 - -     0.34 -  
371 359 - 24.3 213   -  
568 - 24 42.2   141 133

Heat Treatment of steel grade 17-4PH

Heat treated : 1697°C - 1542°C

Technological Curves of steel grade 17-4PH

Cross Reference Table (Equivalent Grade) of 17-4PH

Grade Standard Country Application
17-4PH USA Martensitic special steel
17-4PH USA Martensitic special steel

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