Characteristics
904L is intended for welding 904L and similar grades. 904L is very well suited for use in constructions of the ASTM 316 type, where a ferrite-free weld metal is required, e.g. in cryogenic or non magnetic applications. The impact strength at low temperatures is excellent.
Procedures
904L has a relatively good resistance, provided that the welding has been carried out carefully i.e. by minimizing the dilution and by keeping the heat input at max 1.5 kj/mm. The material should also be allowed to cool down to 100ºC before the next run is welded.
| Classifications | |
|---|---|
| DESCRIPTIONS | Stainless Steel |
| AWS | AWS A5.9 ER385 |
| Mechanical Properties | |
| TENSILE | 610 N/mm² |
| YIELD | 410 N/mm² |
| ELONGATION | 35% |
| IMPACTVALUE | 180J |
| Min Tensile | 510 N/mm² |
| Min Yield Strength | 320 N/mm² |
| Min Elongation | 25% |
| HARDNESS | 170 BRINELL |
| amp16 | 80-110 |
| Pack Size | 5Kg |
| Shield Gas | The most frequently used shielding gas is pure argon with a gas flow of 6-8 l/min. |
| Heat Input | Max.1.5kj/mm |
| Scaling Temperature | Approx. 1000ºC (air) |
| Corrosion Resistance | Very good in non-oxidising environments such as sulphuric or phosphoric acids. Very good resistance to pitting and crevice corrosion in chloride containing Environments. Excellent resistance to general corrosion and stress corrosion cracking. |
| Chemical Analysis | |
|---|---|
| Carbon | 0.01 |
| Manganese | 1.70 |
| Silicone | 0.35 |
| Chromium | 20 |
| Molybdenum | 4.5 |
| Nickel | 25.5 |
| Copper | 1.5 |
Welding Positions
