FOR WELDING AUSTENITIC STAINLESS STEELS CONTAINING A NOMINAL 23Cr-12Ni AND FOR DISSIMILAR WELDS BETWEEN STAINLESS AND C-Mn STEELS
NSK-309
CLASSIFICATION
AWS A5.4 E309-17 | EN ISO 3581-A E 22 12 R
PRODUCT DESCRIPTION
A balanced rutile alumina-silicate flux coating which concentrically extruded on fully alloyed core wire and bound by a blend of silicates that assures both coating strength and resistance to subsequent moisture absorption. These also gives combine ease of use with the smooth appearance of weld deposits.
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. For all-positional welding ideally use smaller diameters.
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. Transition welds between stainless steel and ferritic steel welding clad plate or as a buffer layer on ferritic steel before completing with a more conventional austenitic stainless steel, such as AISI 304
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 150oC for 1 hour
