PRODUCT INFORMATION Category: Stainless Steel Wire Alloy: WW320LR Class: ER320LR Description: ER320LR has a composition similar to ER320, except that the carbon, silicon, phosphorus, and sulfur levels are kept at lower levels as well as the columbium and manganese being recommended or specified at a narrower range. Residuals are limited to reduce the possibility of micro fissuring. This alloy is often used for welding type 320 stainless steels. Chemical Composition C 0.025 max Cr 19.0-21.0 Ni 32.0-36.0 Mo 2.0-3.0 Mn 1.5-2.0 Si 0.15 max P 0.015 max S 0.02 max Cu 3.0-4.0 Nb 8 x C min - 0.40max