Supercore 2205P is optimised for positional welding, both vertical up and for fixed pipework qualified in the ASME 5G or 6G welding positions (pipe typically > 150mm diameter, > 15mm wall). Made with an austenitic stainless steel sheath and rutile flux system. Weld metal-carbon content is typically <0.03% when using either 80% Ar- 20% CO2 or 100% CO2 shielding gas. Metal recovery is about 90% with respect to the wire.
Applications
Duplex stainless steel pipe, plate, fittings and forgings have an approximate 50:50 microstructure of austenite with a ferrite matrix. This, coupled with the general alloying level, confers high strength compared with standard austenitic steels, eg type 316L - good general corrosion resistance in a range of environments - high resistance to chloride-induced stress corrosion cracking (CSCC) - high resistance to pitting attack in chloride environments, eg seawater. These alloys are finding widening application in the offshore oil/gas, chemical and petrochemical process industries, eg pipework systems, flowlines, risers, manifolds etc.
Specification
AWS A5.22: E2209T1-1/4
BS EN ISO 17633-A: T 22 9 3 N L P C/M 2
BS EN ISO 17633-B: TS2209-FB1