Grade 17-4PH
Corresponding Standard SAE AMS 5643Q-2003
Steel, Corrosion-Resistant, Bars, Wire, Forgings, Tubing, and Rings 16Cr - 4.0Ni - 0.30Cb - 4.0Cu Solution Heat Treated, Precipitation Hardenable
Classification Precipitation-Hardening Stainless Steel
Properties Corrosion Resistance Forgability Machinability
Density 7.8 g/cm3
17-4PH Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo More
Minimum Value - - - - - 15 3 3 - Nb:5C~0.45
Maximum Value 0.07 1 1 0.04 0.03 17.5 5 5 0.5
17-4PH Mechanical Properties
heat-treatment Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
H900 (precipitation hardening) ≥1310 ≥1172 ≥10 ≥40 388~444
H925 (precipitation hardening) ≥1172 ≥1069 ≥10 ≥44 375~429
H1025 (precipitation hardening) ≥1069 ≥1000 ≥12 ≥45 331~401
H1075 (precipitation hardening) ≥1000 ≥862 ≥13 ≥45 311~375
H1100 (precipitation hardening) ≥965 ≥793 ≥14 ≥45 302~363
H1150 (precipitation hardening) ≥931 ≥724 ≥16 ≥50 277~352
Solution treatment (S) ≤363
17-4PH Corresponding Standards(Same grade name, different standards)

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