Oerlikon Tenacito R description: Basic coated MMA electrode for reliable, crack-free and tough welded joints on steels with a yield strength <420MPa.The weld metal is of extremely high metallurgical purity, is ageing-resistant, retaining ISO-V toughness to -60C and CTOD tested. Very low hydrogen content. Due to the double coating of the 2.5 mm and 3.2 mm sizes, the arc is both stable and concentrated, even at lower welding currents when positional welding, with good gap bridging characteristics. Welds are of X-ray quality. TENACITO R is also suited for critical applications when welding steels with a carbon content <0.6%, e.g. C45, C60. DB approved for rail welding.