Sub Arc wire for 310 Stainless Steel.
Applications
Use for welding medium and high carbon hardenable steels, of known or unknown specifications, for example, tool steels, shafts, gear teeth, free-cutting steels, dissimilar alloy combinations, buffer layers, overlays etc. The combination of high alloy and high ferrite content (40-50FN) gives extreme tolerance to dilution on a wide range of hardenable and alloy steels with minimum or no preheat. It has also been found useful for welding free-cutting steels or those with a low Mn:S ratio (especially < 20 or so), where other weld metals may fail to prevent hot cracking due to liquation at the fusion boundary. Weld deposit work hardens and gives good wear and friction resistance. Useful for corrosion resistance and to high temperature scaling up to about 1000°C, but not recommended for structural applications above 300°C or for welds to be post-weld heat treated, owing to embrittlement. Not recommended for filling up heavy joints nor for sub-zero applications or where high-notch toughness is required. In these cases, it is generally best to use the electrode for buttering only (preheat if appropriate), then fill with a more ductile austenitic type (no preheat needed) according to the required properties.
Specification
AWS A5.9: ER312
BS EN ISO 14343-A: 29 9
BS EN ISO 14343-B: SS312
BS 2901: Pt2 312S94
DIN 8556: (SG X10CrNi 30 9(1.4337))