Product Details
| GB/T | UNS | AISI/ASTM | ID | W.Nr | |
| 015Cr21Ni26Mo5Cu2 | N08904 | 904L | F904L | 1.4539 | |
| Chemical Composition: | |||||
| Grade | % | Ni | Cr | Mo | Cu |
| 904L | Min | 24 | 19 | 4 | 1 |
| Max | 26 | 21 | 5 | 2 | |
| Fe | C | Mn | P | S | |
| Rest | - | - | - | ||
| 0.02 | 2 | 0.03 | 0.015 | ||
| Physical Performance: | |||||
| Density | 8.0 g/cm3 | ||||
| Melting point | 1300-1390 | ||||
| Grade | T*S | Y*S | El | ||
| Rm N/mm2 | RP0.2N/mm2 | A5 % | |||
| 904L | 490 | 215 | 35 | ||
The steel grade 1.4539 ( also called UNS N08904, 904L and SS2562) is a high alloyed austenitic stainless steel with very good corrosion resistance. The steel is developed to resist corrosion in dilute sulphuric acid and it is suitable to use in details placed in severe corrosion environments e.g. sulphuric acid tanks. It is the combination of high contents of chrome, nickel, molybdenium and cupper which gives the steel the good resistance against uniform corrosion. The steel has also good resistance against crevice corrosion, pitting corrosion, stress corrosion cracking and intercrystalline corrosion
Typical application areas for 1.4539:
Marine environment
Chemical industry
Pharmaceutical industry
Food industry
Good formability and weldability
1.4539 is weldable but sensitive to hot cracking. Regarding welding it is important to follow special welding instructions from Avesta Welding. The steel can be both cold- and hot formed, but it can only be hardened by cold working. 1.4539 is difficult to machine and has a tendency towards work hardening. With the right choise of tool and machine data, fully satisfactoring machining results can be obtained with this grade.
