Basic coated all-positional pipe welding MMA electrode for welding Zeron® 100 and other super duplex alloys for service in the as-welded condition. This electrode is overmatching with respect to nickel content to achieve correct austenite ferrite microstructural phase balance. It is designed for the most demanding vertical and overhead welding positions such as fixed pipework qualified in the ASME 6G position. Fully alloyed matching Zeron® 100 core wire including W and Cu. Moisture-resistant flux technology. Recovery is about 105% with respect to the core wire, and 65% with respect to the whole electrode.
Applications
Zeron® 100 has an exceptional combination of strength and resistance to corrosion and erosion in a wide range of aggressive media. The presence of Cu+W provides superior resistance to sulphuric and hydrochloric acids when compared to similar alloys without these additions. Offshore applications exploit the high resistance to pitting and stress-corrosion cracking in seawater. It is also highly resistant to caustic alkalis and phosphoric acid. Service temperature range is usually limited to –50°C to 280°C, the upper limit owing to thermal instability ("450°C" and sigma embrittlement). It is widely used in oil and gas production and process pipework, risers, manifolds, pressure vessels, valves, pumps, desalination plants, systems for flue-gas desulphurisation (FGD) and also in the mining, chemical and pharmaceutical industries. Zeron® 100 wires are also used for joining super martensitic stainless steels.
Specification
AWS A5.4: E2595-15
BS EN 1600: E 25 9 4 N L B 42
Weir Materials: MDS 12809/08
Approvals: ABS, DNV