Nickel Based Alloys

A CHEMICALLY BASIC FLUX COATED MMA ELECTRODE DEPOSITING A NICKEL BASED ALLOY HIGH IN BOTH CHROMIUM AND MOLYDENIUM

NCM-12

CLASSIFICATION

AWS A5.11 ENiCrMo-12 ; EN ISO 14172 E Ni 6627

PRODUCT DESCRIPTION

The chemically basic flux is extruded onto a pure nickel core wire. The flux contains chrome & iron also other 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

For welding both austenitic stainless steels and duplex stainless steels to each other or to themselves or to NiCrMo alloys as the composition is balanced to provide excellent corrosion resistance below the creep range of stainless steels, even highly alloyed types.

Material specification covered includes ASTM A240, A182, A249, A276, A312, A358, A403 and A479, and particularly Grade UNS No. S31254.

WELDING AMPERAGE AC and DC

OTHER DATA

Electrodes that have become damp should be re-dried at 180^oC for 1 hour.