Applications
shafts, turbine parts, valves, hydraulic components.
MATERIALS165MStainless steel
STAINLESS STEEL1.4418
MATERIAL DATASHEET
S165M (EN 1.4418 / X4CrNiMo16-5-1)
High strength martensitic/austenitic stainless with good weldability and fatigue resistance; used in hydro & marine components.
Standards & designations
| Designation | Reference |
|---|---|
| UNS | — |
| Werkstoff Nr. | 1.4418 |
| ASTM | — (use product specs) |
| ASME | — |
| EN/ISO | EN 10088-3 |
| Others | S165M; SS2387 |
Mechanical properties
| Property | Value / condition |
|---|---|
| Yield strength Rp0.2 | ≥ 700 MPa (QT900 bar) |
| Tensile strength Rm | 900–1100 MPa (QT900) |
| Elongation | ≥ 16 % (bar) |
| Hardness | 280–340 HB (QT900) |
Chemical composition
Weight %
| Element | Cr | Ni | Mo | C | Mn | Si | P | S | Fe |
|---|---|---|---|---|---|---|---|---|---|
| Min | 15.0 | 4.0 | 0.80 | — | — | — | — | — | bal. |
| Max | 17.0 | 6.0 | 1.50 | 0.06 | 1.50 | 0.70 | 0.04 | 0.03 | bal. |
Applications & processing
Heat treatment
QT conditions (e.g., QT900) common.
Weldability
Good (preheat recommended).
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.