Applications
phosphoric/sulfuric acid plants, seawater, chemical process.
MATERIAL904LAISI
STAINLESS STEEL1.4539UNS N08904
MATERIAL DATASHEET
AISI 904L (EN 1.4539)
Low-carbon high-alloy austenitic stainless steel with high Ni and Mo; very good resistance to chloride pitting and sulfuric acid.
Standards & designations
| Designation | Reference |
|---|---|
| UNS | N08904 |
| Werkstoff Nr. | 1.4539 |
| ASTM | A240 (plate), A182 (forgings), A479/A276 (bar) |
| ASME | SA240, SA182, SA479/SA276 |
| EN/ISO | EN 10088-2/3 (1.4539) |
| Others | X1NiCrMoCu25-20-5 |
Mechanical properties
| Property | Value / condition |
|---|---|
| Yield strength Rp0.2 | ≥ 220 MPa |
| Tensile strength Rm | ≥ 490 MPa |
| Elongation | ≥ 35 % |
| Hardness | — |
Chemical composition
Weight %
| Element | Cr | Ni | Mo | Cu | C | Mn | Si | P | S | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 19.0 | 23.0 | 4.0 | 1.0 | – | – | – | – | – | – | bal. |
| Max | 23.0 | 28.0 | 5.0 | 2.0 | 0.02 | 2.0 | 1.0 | 0.045 | 0.035 | 0.10 | bal. |
Applications & processing
Heat treatment
Solution anneal ~ 1090–1175 °C; rapid quench.
Weldability
Good.
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.