Characteristics and typical fields of application Basic electrode, stabilised core wire alloyed, stainless steel, mainly for Ti and Nb stabilised 1.4571 / 1.4580 / 316Ti steel grades. BÖHLER FOX SAS 4 is designed to produce first class weld deposits with reliable CVN toughness values down to –90 °C, 100 % X-ray safety together with very good root pass and positional welding characteristics, good gap bridging ability, easy weld pool and slag control as well as easy slag removal even in narrow preparations resulting in clean bead surfaces and minimum post weld cleaning. An excellent electrode for welding on site and for heavy and rigid components. The product is resistant to intergranular corrosion up to +400 °C.