FOR WELDING AUSTENITIC STAINLESSS STEELS CONTAINING A NOMINAL 18Cr-12Ni-2.7Mo-Nb
NSN-318
CLASSIFICATION
AWS A5.4 E318-16 | EN ISO 3581-A E 19 12 3 Nb R | JIS Z 3221 D318-16
PRODUCT DESCRIPTION
A metallurgically advanced rutile based flux formulated with balanced additions of chemically basic, amphoteric and acid minerals, together with small alloy additions to compensate for arc losses. The flux is concentrically extruded onto a fully alloyed core wire and bound by a
blend of silicates that assures both coating strength and resistance to subsequent moisture absorption.
WELDING FEATURES OF THE ELECTRODE
This unique flux formulation ensures excellent arc stability, ease of initial arc strike and re-strike minimal spatter on AC and virtually none on DC+. The resultant weld seams are smooth, evenly rippled and free from undercut while slag detachability is excellent. Metal recovery is some 103% with respect to core wire weight.
APPLICATIONS AND MATERIALS TO BE WELDED
Applications for the electrode are to be found in the Chemical, Petro-Chemical and Cryogenic Processing and Storage Industries as well as the Food, Brewery and Pharmaceutical Industries using the following materials: ASTM/ASME 316Ti 316Cb CF10MC 318C17 UNS S31635 S316640 NSN-318 is designed to weld Nb- or Ti-stabilised grades of Mo containing Austenitic Stainless Steels when good corrosion resistance is needed. Max service temperature is 400ºC.
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 150oC for 1 hour
