Nikko Steel Kawat Las Elektroda For Superaustenitic Alloys and Modified Austenitics NS-253

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 8 NS-253 SPECIAL RUTILE FLUX CONTAINING A HIGH LEVEL OF HIGH PURITY SILICIOUS MINERALS AND RARE EARTH ELEMENTS THAT DEPOSITS A NOMINAL 22Cr-10Ni WELD METAL WITH EXCELLENT CORROSION RESISTANCE DATA SHEET NO. 101 SPECIFICATION - CLASSIFICATION - PRODUCT DESCRIPTION Manufactured on an austenitic core wire of matching composition, the specially modified rutile flux has been metallurgically modified to ensure controlled levels of C-Si-N 2 . The blend of silicates used during extrusion ensures both coating strength and a coating resistant to subsequent moisture absorption. WELDING FEATURES OF THE ELECTRODE Suitable for use on both AC and DC. Welds with a very stable, directional but low penetrating arc. Weld beads are exceptionally smooth and evenly rippled. Slag is normally self detaching and fillet welds slightly concave. The slag is fairly fluid allowing full control of run-out length and the smaller diameters are suited for positional welding. APPLICATIONS AND MATERIALS TO BE WELDED Intended / designed to weld similarly alloyed materials when both strength and resistance to oxidation is required up to 1100 º C. Such wrought alloys are covered under ASTM / UNS S30815 and EN10095 1.4835 (21-11-2). Proprietary alloys include AVESTA 253MA and the similarly alloyed AVESTA 153MA as covered by ASTM UNS S30415. Applications include furnace parts, high temperature flues, exhausts, combustion nozzles, etc. WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Cr Ni Mo N Cu FN MIN - 0.5 1.4 - - 18 9.0 - - - 3 MAX 0.08 1.5 2.0 0.03 0.04 22 11 0.75 0.20 0.75 10 TYPICAL 0.02 1.0 1.5 0.01 0.02 21 10 0.5 0.14 0.1 5 WELD METAL PROPERTIES (ALL WELD METAL) PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 - 670 Elongation on 4d % - 50 Reduction of Area (RA) % - 60 Impact energy 0 o C J - 70 WELDING AMPERAGE AC or DC+ Ø (mm) 2.6 3.2 4.0 MIN 60 110 110 MAX 100 140 180 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 DS101 NS-253 Rev. 3, Date 01.07.2013

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