1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 7 NCM-6 A CHEMICALLY BASIC FLUX COATED MMA ELECTRODE DEPOSITING A NICKEL BASED ALLOY HIGH IN BOTH CHROMIUM AND MOLYDENIUM DATA SHEET NO. 92 SPECIFICATION AWS A5.11 BS EN ISO 14172 JIS Z 3225 CLASSIFICATION ENiCrMo-6 E Ni 6620 D9Ni-1 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 brig ht 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 As the weld metal has excellent cryogenic properties, both toughness and lateral expansion, it is ideal for welding 9% Nickel operating up to -196 º C and conforming to ASTM A353, A533, UNS K81340 and K71340. Also suitable for 5% nickel steels including ASTM A645 and A352 LC4 (cast). WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Cr Ni Cu Mo Nb W Fe MIN - 2.0 - - - 12 55 - 5.0 0.5 1.0 - MAX 0.1 4.0 1.0 0.02 0.03 17 - 0.5 9.0 2.0 2.0 10 TYPICAL 0.04 3.0 0.7 0.02 0.01 15 Bal 0.2 7.0 1.0 1.2 8.0 WELD METAL PROPERTIES (ALL WELD METAL) PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 620 750 0.2% Proof stress N/mm 2 - 480 Elongation on 4d % 35 40 Reduction of Area (RA) % - 40 Impact energy -196 o C J - 65 LATERAL EXPANSION -196°C 0.8mm WELDING AMPERAGE AC or DC+ Ø (mm) 3.2 4.0 5.0 MIN 90 130 170 MAX 130 180 200 OTHER DATA Electrodes that have become damp should be re-dried at 180 o C for 1 hour. RELATED PRODUCTS Please contact our Technical Department for detail. WI-0304 DS92 NCM-6, Rev. 0, Date 01.09.2008