Type B Backup Flux, CanFormulated to shield the back of the weld joint from oxygen, dissipate heat and unwanted oxides and to clean the surface of metal Will aid in the flow of filler metal over base metal and form a protective barrier to prevent re oxidization and heat scale To be mixed with alcohol (methanol methyl alcohol preferred) and brushed on the back of the weld joint Inert, non flammable and non explosive Type B for welding stainless steel and alloy steels