Oerlikon Supranox 347 description: SUPRANOX 347 is a rutile coated MMA electrode for welding similar stabilised austenitic Cr-Ni steels, also suited for ferritic stainless and heat resistant Cr-steels .The weld metal transfer is in fine droplets, nearly spatter free with a generally self-releasing slag, producing finely rippled concave fillet welds with an outstanding weld bead aspect. Good striking and restriking. Under wet corrosive conditions, suitable for operating temperatures <400C, non-scaling <800C.