Nikko Steel Kawat Las Elektroda For Superaustenitic Alloys and Modified Austenitics NCNb-35.45

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 8 NCNb-35.45 A CHEMICALLY BASIC FLUX COATED ELECTRODE THAT DEPOSITS A NIOBIUM STABILISED WELD METAL CONTAINING A NOMINAL 35Cr-45Ni RESISTANT TO THERMAL FATIGUE UP TO 1150 º C DATA SHEET NO. 105 SPECIFICATION CLASSIFICATION NO SPECIFICATION EXISTS FOR THIS ELECTRODE, BUT IT MAY BE COMPOSITIONALLY CODED AS 35.45.HNb B PRODUCT DESCRIPTION Manufactured on a high purity Cr-Ni wire, the chemically basic flux provides high resistance to microfissuring when welding thick sections and ensures low levels of non-metallic inclusions. The flux is extruded on to the core wire using a blend of silicates that ensures both coating strength and a coating resistant to subsequent moisture absorption . WELDING FEATURES OF THE ELECTRODE Suitable for use on DC+ only, the arc is stable and directional but strike and re- strikes should be made with the back-step technique. The weld beads are bright with fillet welds having a convex profile. Slag detachability is good even in thick butt welds. Positional welding is best undertaken with 3.2mm and smaller diameters. Metal recovery is some 130% with respect to weight of core wire. APPLICATIONS AND MATERIALS TO BE WELDED This Alloy has superior resistance to carburisation and oxidation than those based on 25.35.HNb at temperatures up to 1150 º C but creep strength is slightly lower. Applications occur mainly in the Petro Chemical Industry. Proprietary alloys include Lloyds T80 and T75 Ma (LBA). Paralloy it 46M (Doncaster Paralloy). WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Cr Ni Nb MIN 0.4 - 1.0 - - 34 44 - MAX 0.5 2.0 1.6 0.015 0.015 38 50 1.5 TYPICAL 0.44 1.4 1.2 0.01 0.01 36 47 1.3 WELD METAL PROPERTIES (ALL WELD METAL) PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 450 700 0.2% Proof stress N/mm 2 250 530 Elongation on 4d % - 3 Reduction of Area (RA) % - - Impact energy 0 o C J - - HV 268 WELDING AMPERAGE DC+ Ø (mm) 2.6 3.2 4.0 MIN 70 85 110 MAX 95 120 160 OTHER DATA Electrodes that have become damp should be re-dried at 150 o C for 1 hour. RELATED PRODUCTS Please contact our Technical Department for detail. WI-0304 DS105 NCNb-35.45, Rev. 1, Date 11.04.2011


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