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17-4PH |
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| Category | Steel |
| Class | Stainless steel |
| Type | Precipitation-hardening standard |
| Designations |
United States: AMS 5342 , AMS 5343 , AMS 5344 , AMS 5355 , AMS 5604 , AMS 5622 , AMS 5643 , AMS 5825 , ASME SA564 , ASME SA705 , ASTM A564 , ASTM A693 , ASTM A705 , MIL SPEC MIL-C-24111 , MIL SPEC MIL-S-81506 , MIL SPEC MIL-S-81591 , SAE J467 (17-4PH) , UNS S17400
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| Composition |
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| Element | Weight % |
| C |
0.07 |
| Mn |
1.00 |
| Si |
1.00 |
| Cr |
15.5-17.5 |
| Ni |
3.0-5.0 |
| P |
0.04 |
| S |
0.03 |
| Cu |
3.0-5.0 |
| Nb+Ta |
0.15-0.45 |
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| Mechanical Properties |
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| Properties | Conditions |
| T (°C) | Treatment |
| Density (×1000 kg/m3) |
7.7-8.03
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25 |
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| Poisson's Ratio |
0.27-0.30 |
25 |
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| Elastic Modulus (GPa) |
196 |
25 |
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| Tensile Strength (Mpa) |
1070 |
25 |
H1025 (bar, plate, sheet, strip) more |
| Yield Strength (Mpa) |
1000 |
| Elongation (%) |
12 |
| Reduction in Area (%) |
45 |
| Hardness (HRC) |
35-42 |
25 |
H1025 (bar, plate, sheet, strip) more |
| Thermal Properties |
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| Properties | Conditions |
| T (°C) | Treatment |
| Thermal Expansion (10-6/ºC) |
10.8 |
0-100 more |
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| Thermal Conductivity (W/m-K) |
18.3 |
100 more |
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| Specific Heat (J/kg-K) |
460 |
0-100 |
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| Electric Properties |
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| Properties | Conditions |
| T (°C) | Treatment |
| Electric Resistivity (10-9W-m) |
800 |
25 |
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