A CHEMICALLY BASIC FLUX COATED MMA ELECTRODE DEPOSITING A NICKEL BASED ALLOY HIGH IN BOTH CHROMIUM AND MOLYDENIUM
NCM-30
CLASSIFICATION
AWS A5.11 ENiCrMo-11 | BS EN ISO 14172 E Ni 6030
PRODUCT DESCRIPTION
The chemically basic flux is extruded onto a high purity nickel chromium core wire. The flux contains the remaining alloying elements together with alloys for deoxidation and grain refinement. The blend of silicates used during electrode production ensure both coating strength and resistance to subsequent moisture absorption.
WELDING FEATURES OF THE ELECTRODE
The electrode is suitable for use on both AC and DC+ and welds with great arc stability and thus control of the molten weld pool. Slag detachability is good. The weld beads are bright and evenly rippled with fillet welds slightly convex. Strike and re-strike should be made with the established back step technique.
APPLICATIONS AND MATERIALS TO BE WELDED
Typical specifications for the NiCrMo alloys to be welded include:
ASTM B581, B582, B619, B622 and B626 all of which have the UNS N06030.
Proprietary alloys :
Hastelloy G-30 (Haynes International, Inc.)
They are also used for the welding of steel clad with these alloys and for the
dissimilar welds between NiCrMo alloys and a wide range of steels including
stainless types.
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 180oC for 1 hour.
