FOR WELDING FULLY AUSTENITIC STAINLESS STEELS CONTAINING A NOMINAL 25 Cr and 20Ni
NSD-310
CLASSIFICATION
AWS A5.4 E310-15 | EN ISO 3581-A E 25 20 B | JIS Z 3221 D310-15
PRODUCT DESCRIPTION
A chemically basic flux with a low level of silicious 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
Suitable for use on DC+ only, the arc is very forceful but the nature of the molten slag allows easy vertical up and overhead welding. Because weld metal silicon is low by design to reduce solidification cracking (a feature common to all ferrite free austenitic alloys), the weld profile is more u-convex than normal.
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/UNS 310 / S31000 CK20 (cast) 310S / S31008 Proprietary materials - Immaculate S (Firth Vickers) 15 RE 10 (Sandvick)
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 150oC for 1 hour
