Tig Welding Wire
|AWS||AWS A5.9 ER385|
|Min Tensile||510 N/mm²|
|Min Yield Strength||320 N/mm²|
|Shield Gas||The most frequently used shielding gas is pure argon with a gas flow of 6-8 l/min.|
|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.|
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.
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.