Nikko Steel Kawat Las Elektroda Mo & CrMo Alloyed Heat & Creep Resisting Steels RD-716A

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 5 RD-716A BASIC LOW HYDROGEN ELECTRODE FOR WELDING C-Mn-Mo STEELS OPERATING UP TO 450 º C DATA SHEET NO. 45 SPECIFICATION AWS A5.5 BS EN ISO 2560-B JIS Z 3223 CLASSIFICATION E7016-A1 E4916-1M3 DT 1216 WELDING FEATURES OF THE ELECTRODE The chemical nature of the flux together with its controlled coating factor allows the electrode to be used at relatively low amps. This factor together with the fairly fluid but quick freezing slag facilitate vertical up welding including controlled penetration root runs. Overall the arc is very stable, slag detachability is good, fillet welds are slightly convex and metal recovery is some 98% with respect to weight of the core wire. PRODUCT DESCRIPTION The design emphasis of the chemically basic flux is engineered to ensure the optimum weld metal properties demanded by the specification are fully met. The basic flux containing the appropriate alloying elements but minimal iron powder, is extruded onto a hig h purity ferritic core wire and bound with a blend of silicates that ensure both coating strength and a coating resistant to subsequent moisture absorption . APPLICATIONS AND MATERIALS TO BE WELDED N ominal 0.5Mo content improves elevated temperature performance of weld metal over C-Mn types operating at 450 º C. Materials to be welded include: ASTM A335-P1 A209 and A250-Tl BS3059-243-3606-243-245 2U Forged ASTM A336-F1 A204 A, B and C. Cast ASTM A217-WC1 A352-LC1 WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Mo Fe MIN - - - - - 0.40 MAX 0.12 0.9 0.6 0.03 0.03 0.65 TYPICAL 0.05 0.8 0.4 0.01 0.01 0.50 Bal. ALL WELD METAL PROPERTIES PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 490 580 0.2% Proof stress N/mm 2 390 490 Elongation on 4d % 22 28 Reduction of Area (RA) % - - Impact energy -30 o C J - 80 PROPERTIES MAINTAINED AFTER PWHT AT 620ºC WELDING AMPERAGE AC or DC+ Ø (mm) 2.6 3.2 4.0 5.0 MIN 50 75 130 180 MAX 85 125 170 220 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. PRE-HEAT 50 – 250 ºC DEPENDING ON THICKNESS AND RESTRAINT WI-0304 DS45 RD-716A Rev. 2, Date 01.08.2011

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