Stainless Steel ER320LR Filler Wire is used for welding base metals with similar composition in wrought and cast forms including Alloy 20 & Carpenter 20Cb-3*. SS ER320LR Filler Wire is vacuum melted to reduce levels of carbon, phosphorus, and sulphur to reduce micro fissuring. Columbium and manganese are also controlled to a tighter specification for this purpose.
SS ER320LR resists severe corrosion involving a wide range of chemicals, including sulfuric and sulphurous acids and their salts. Stainless Steel ER320LR Welding Wire has the same basic composition as SS ER 320, except the carbon, silicon, phosphorus and sulphur levels are kept at lower levels and the niobium and manganese are controlled at narrower ranges. These tighter ranges or low residuals (LR) reduce hot cracking and micro-fissuring (while maintaining corrosion resistance) frequently encountered in fully austenitic stainless steel weld metals.
Stainless Steel ER320LR Welding Wire exhibits outstanding o