SOLD PER KG PRODUCT COMES IN 5KG PACK - PRICE FOR PACK IS $272.50 AWS A 5.28: ER90S-B3 B3 Tig Wire ia a Low alloy copper-coated tig rod with 2.25% Cr and 1% Mo content to be used for the welding of creep resistant steel. Chemical composition of rod conforming to AWS specification. It is used in chemical industry and in the ammonia synthesis process, for heat exchangers, boilers, piping and pressure vessels for temperature service up to about 600°C. It will also find applications in the petro-chemical industries, suitable for facing on casting and for casting repairs.