316L (including ER316LSi) filler metal should be used with 316L and 316 base metals. Molybdenum grade reduces corrosion. Trade Packs - 2.5kg and 5kg bundles are original 1000mm (1 meter in length) and not cut down.
ER308L has the same analysis as type 308 except the carbon content has been held to a maximum of 0.03% to reduce the possibility of corrosion. ER308L is ideal for welding Types 304L, 321, and 347 stainless steels. Trade Packs - 2.5kg and 5kg bundles are original 1000mm (1 meter in length) and not cut down.
ER309L has the same qualities as ER309 but with the lower carbon content deemed necessary in many chemical applications. ER309L is preferred over ER309 for cladding over carbon or low alloy steels, or dissimilar joints that are heat treated.
ER309LSI is suitable for joining stainless steels of the 304 type and 347 types. The higher silicon gives arc stability and exceptionally smooth bead appearance.
These give a fully austenitic, low carbon weld metal with molybdenum and copper, with good resistance to corrosion in sulphuric, phosphoric and other inorganic and organic acids.