Nikko Steel Kawat Las Elektroda For High Tensile Low Alloy Steels RD-100

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1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 4 RD-100 BASIC LOW HYDROGEN ELECTRODE FOR WELDING STEELS WITH A MINIMUM UTS OF 700 N/mm 2 DATA SHEET NO. 39 SPECIFICATION AWS A5.5 JIS Z 3212 CLASSIFICATION E10016-G D7016 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 high purity ferritic core wire and bound with a blend of silicates that ensure both coating strength and a coating resistant to subsequent moisture absorption . WELDING FEATURES OF THE ELECTRODE T he 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. APPLICATIONS AND MATERIALS TO BE WELDED Ferritic high strength low alloy (HSLA) steels, eg: quenched and tempered AISI 4130, 4140, BS970 709M40 (En19), and DIN 42CrMo4. Fabrication of higher strength steels involving a requirement to meet a minimum all-weld metal UTS of 700 N/mm 2 (100 ksi) with butt welds in the stress relieved condition. For offshore oil well-head process pipework and fittings, these nickel-free electrodes satisfy NACE MR-0175 requirements intended to ensure resistance to sulphide-induced stress corrosion cracking combined with good sub-zero notch toughness. WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Cr Ni Mo Fe MIN 0.05 0.5 0.2 - - 0.1 - 0.2 MAX. 0.15 2.0 0.8 0.02 0.03 0.4 1.8 0.4 TYPICAL 0.10 1.5 0.4 0.01 0.01 0.2 1.6 0.3 Bal. * Undiluted weld metal shall have the minimum of at least one of the element as specified on AWS A5.5-2006 WELD METAL PROPERTIES (ALL WELD METAL) PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 690 750 0.2% Proof stress N/mm 2 600 680 Elongation on 4d % 16 25 Reduction of Area (RA) % - 65 Impact energy -20 o C J - 80 WELDING AMPERAGE AC or DC+ Ø (mm) 2.6 3.2 4.0 5.0 MIN 50 70 130 180 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 WI-0304 DS39 RD-100 Rev. 4, 01.07.2013

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