Applications
shafts, fasteners, valve parts, aerospace and energy components.
MATERIAL17-4 PHStainless steel
STAINLESS STEEL1.4542UNS S17400
MATERIAL DATASHEET
17-4 PH (UNS S17400 / EN 1.4542)
Precipitation-hardening martensitic stainless steel; high strength after aging (H900–H1150), good corrosion resistance.
Standards & designations
| Designation | Reference |
|---|---|
| UNS | S17400 |
| Werkstoff Nr. | 1.4542 |
| ASTM | A564 (bar), A705 (forgings), A693 (plate) |
| ASME | SA564, SA705, SA693 |
| EN/ISO | EN 10088-3 (1.4542) |
| Others | X5CrNiCuNb16-4 |
Mechanical properties
| Property | Value / condition |
|---|---|
| Yield strength Rp0.2 | ≥ 1000–1310 MPa (aged, condition dependent) |
| Tensile strength Rm | ≥ 1070–1310+ MPa |
| Elongation | ~ 10–20 % |
| Hardness | ~ HRC 28–44 (condition dependent) |
Chemical composition
Weight %
| Element | Cr | Ni | Cu | Nb+Ta | C | Mn | Si | P | S | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | 15.0 | 3.0 | 3.0 | 0.15 | — | — | — | — | — | bal. |
| Max | 17.5 | 5.0 | 5.0 | 0.45 | 0.07 | 1.0 | 1.0 | 0.04 | 0.03 | bal. |
Applications & processing
Heat treatment
Solution treat, then age (e.g., H900, H1025, H1150).
Weldability
Good (match filler).
The information in this datasheet is provided for guidance only. Intermec AS does not guarantee the accuracy or completeness of the data. Users must verify suitability for their specific applications.