17-4PH
17-4PH Precipitation-Hardening Stainless Bar
Cost-effective martensitic PH stainless steel
Martensitic PH stainless steel with strength/toughness adjustable across H900–H1150 tempers; H1025 as the certified mainstream condition (≥1070 MPa, 34-40 HRC), offering good machinability and short lead times.
Technical Data
- Material category
- Martensitic Precipitation-Hardening Stainless Steel
- Specification
- ASME SA564 · ASTM A564
- Delivery condition
- Solution + Aged (certified H1025 · H900 – H1150 available)
- UNS
- S17400
- W.Nr.
- 1.4542
- Specification
- 17-4PH / 05Cr17Ni4Cu4Nb / UNS S17400
Mechanical Properties
| Tensile Rm | ≥ 1070 MPa |
|---|---|
| Yield Rp0.2 | ≥ 1000 MPa |
| Elongation A | ≥ 12 % |
| Reduction of Area | ≥ 45 % |
| Hardness | 34 – 40 HRC |
| Service Temp. | -40 ~ 315 °C |
| Density | 7.80 g/cm³ |
| Condition | Solution + Aged (certified H1025 · H900 – H1150 available) |
Chemical Composition
Values in wt%, balance is the base element.
| Iron Fe | 余量 Bal. |
|---|---|
| Chromium Cr | 15.5 – 17.5 |
| Nickel Ni | 3.0 – 5.0 |
| Copper Cu | 3.0 – 5.0 |
| Niobium Nb | 0.15 – 0.45 |
| Manganese Mn | ≤ 1.00 |
| Silicon Si | ≤ 1.00 |
| Carbon C | ≤ 0.07 |
| Phosphorus P | ≤ 0.04 |
| Sulfur S | ≤ 0.03 |
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