FOR WELDING STABILISED AUSTENITIC STAINLESSS STEELS CONTAINING A NOMINAL 19 Cr and 10Ni
NSN-347
CLASSIFICATION
AWS A5.4 E347-16 | EN ISO 3581-A E 19 9 Nb R | JIS Z 3221 D347-16
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 321 347 CF8C (cast) UNS S32100 S34700
NSN-347 is designed to weld Nb and Ti Stabilised Austenitic Stainless Steels at service temperatures between 100ºC and 400ºC
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 150oC for 1 hour
APPROVED BY
LR Grade 347
