SAF Safer NF 510A description: SAFER NF 510A is a basic coated MMA electrode for producing crack-free and tough welded joints. Good welding characteristics. Good weldability and arc stable. SAFER NF 510A is suitable for root passes and positional welding, welds are of X-ray quality. The weld metal has good ISO-V toughness to -40C. Suitable for unalloyed steels with low purity or higher carbon content, <0.4%C, and for buffer layers. Very low hydrogen content after re-drying. Material to be welded S(P) 235-S(P) 420; GP240- GP 280; L245-L360 EN 10025-2 S(P)235; S(P)355;GP 240; GP 280;L 245;L360. Excellent Mechanical Properties. Deposit free from porosity, excellent slag detachability.