TIG wire for 904L austenitic stainless.
Applications
These consumables give a fully austenitic, low-carbon weld metal with molybdenum and copper, with good resistance to corrosion in sulphuric, phosphoric and other inorganic and organic acids. They are not normally chosen for resistance to corrosion in concentrated nitric acid. For service in severe chloride pitting media, overmatching nickel-base weld metal is recommended, see alloy 625 (data sheet D-20). It is the preferred weld metal for some lower alloy austenitic such as Creusot UHB 34L and UHB 734L for wet process phosphoric acid service. Applications include tanks and process vessels, piping systems, agitators and rotors and cast pumps and valves for use in the fertiliser, phosphoric, sulphuric and acetic acid plants, and in salt and seawater environments. It is also used in some offshore applications, including overlays on mild and low alloy steels.
Specifications
AWS A5.9: ER 385
BS EN ISO 14343-A: 20 25 5 Cu L
BS EN ISO 14343-B: SS385
BS 2901: Pt2 904S92
DIN 8556: (Nearest SG X2CrNiMoCu 25 20 / 1.4519)