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S17400

Precipitation Hardening Stainless Steels (e.g.,17-4PH,17-7PH )

Description：

Precipitation Hardening Stainless Steels (e.g.,17-4PH,17-7PH ) are a class of high-strength stainless steels that achieve their exceptional mechanical properties through a specific heat treatment process known as age hardening or precipitation hardening.

Chemical Composition:

Grade C(％) Nb(％) Mn(％) S(％) Ni(％) Cr(％) P(％) Si(％) Cu(％) Al(％) Fe(％)
17-4PH ≤0.07 0.15-0.45 ≤1.0 ≤0.04 3.0-5.0 15-17.5 ≤0.04 ≤1.0 3.0-5.0 － Bal.
17-7PH ≤0.09 － ≤1.0 ≤0.04 6.5-7.75 16-18 ≤0.04 ≤1.0 － 0.75-1.5 Bal.

Mechanical Properties:

Grade Condition Subtype RM(N/MM²) HBW RP0.2% (N/MM²) E4D(%)
17-4PH S-A AT 1200 max 360 max － －
S-A-A H900 1310 min 380 min 1170 min 10 min
S-A-A H925 1170 min  375 min 1070 min 10 min
S-A-A H1025(P1070) 1070 min 331 min 1000 min 12 min
S-A-A H1075 1000 min 311 min 860 min 13 min
S-A-A H1100(P960) 965 min  302 min 795 min 14 min
S-A-A H1150(P930) 930 min 277 min 725 min 16 min
S-A-D H1150M(P800)  795 min  255 mim 520 min 18 min
S-A-D H1150D  860 min  255-311 725 min 16 min

Grade Tensile strength Yield strength Fracture toughness (longitudinal, 44 HRC) Elastic modulus
17-7PH Metric Imperial Metric Imperial Metric Imperial Metric Imperial
1275 MPa 184900 psi 1030 MPa 149000 psi 76 MPa-m½ 69.2 ksi-in½ 204 GPa 29588 ksi
Poisson's ratio Elongation at break Reduction of area Hardness, Rockwell C
Metric Imperial Metric Imperial Metric Imperial Metric Imperial
0.27-0.30 0.27-0.30 6% 6% 10% 10% 41 41

Available Sizes And Specifications：

Grade S32760
Cold rolled stainless steel coil/sheet Coil Thickness: 0.3mm- 3.0mm, Width: 1000mm – 2000mm.  Sheet Thickness:0.3mm- 3.0mm Width&Length：as customer requirement.
Hot rolled stainless steel coil/plate Coil Thickness: 3mm- 16mm, Width: 1000mm – 2000mm.  Plate Thickness:3mm- 16mm Width&Length：as customer requirement.
Stainless steel Strip Thickness:0.3mm- 16.0mm Width&Length：as customer requirement.
stainless steel plate Thickness:0.3mm- 200.0mm Width：1000mm- 2000mm  Length：as customer requirement.
Stainless steel round Bar Diameter: 2mm – 600mm
Stainless steel seamless pipe/tube Outside diameter: 4.0 – 1219mm, Thickness: 0.5 -100mm,Length: 24000mm Or possible dimensions
Stainless Steel welded pipe/tube Outside diameter: 6.0 – 2800mm, Thickness: 0.3 -45mm,Length: 18000mm  Or possible dimensions
Stainless steel square bar Dimension: 3.0 – 180mm
Stainless steel flat bar Thickness: 0.5mm – 200mm, Width: 1.5mm – 250 mm
Stainless steel angle bar as requirements
Standard ASTM A240/A480, ASTM B688, ASTM B463/SB463, ASTM B168/SB168, ASTM B443/SB443/B424/SB424B625/SB625 B575/SB575, JIS G4303,   BS 1449, DN17441, G4305

Surface Treatment：

Applications：

Aerospace Industry

Chemical and Energy Sector

Medical Devices

High-Performance Automotive

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