Nikko Steel Kawat Las Elektroda For High Tensile Low Alloy Steels RD-718

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 4 RD-718 LOW HYDROGEN - IRON POWDER ELECTRODE WITH OPTIMUM WELDABILITY FOR WORKSHOP AND SITE FABRICATIONAL WORK DATA SHEET NO. 23 SPECIFICATION AWS A5.1 BS EN ISO 2560-B JIS Z 3212 CLASSIFICATION E7018 E4918 D5016 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 with a controlled balanced addition of iron powder, is extruded onto a high purity ferritic core wire with a blend of silicates that ensures both coating strength and a coating resistant to subsequent moisture absorption . WELDING FEATURES OF THE ELECTRODE The chemical nature of the flux together with a significant proportion of iron powder ensures maximum deposition efficiency without detracting from its ability to be used in all positions except vertical down. O verall the arc is very stable, slag detachability is good and metal recovery is some 120% with respect to the core wire. APPLICATIONS AND MATERIALS TO BE WELDED Medium and high tensile carbon-manganese steels with UTS of up to 510 N/mm 2 max. Typical grades : BS 1449 plate and sheet BS 4360 grades 43A and 43C Lloyds A & D ship steel BS 4360 grade 50B, Lloyds grades AH and DH BS 3059 and BS 3601 grade 320-410 API 5L A-B and X42, BS 4360-50B-50C-50D, BS 1501-151 430-490, BS 3602-410-460. Such steels are used in ship construction, bridge building and pressure vessel work as well as general construction work. WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Cr Ni Mo V Fe MIN - - - - - - - - - MAX 0.15 1.6 0.75 0.035 0.035 0.2 0.3 0.3 0.08 TYPICAL 0.1 1.0 0.35 0.01 0.01 0.1 0.01 0.02 0.02 Bal. WELD METAL PROPERTIES (ALL WELD METAL) PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 490 600 0.2% Proof stress N/mm 2 400 550 Elongation on 4d % 22 28 Reduction of Area (RA) % - 70 Impact energy -30 o C J 27 80 WELDING AMPERAGE AC or DC+ Ø (mm) 2.6 3.2 4.0 5.0 MIN 50 90 130 170 MAX 100 140 180 220 OTHER DATA Electrodes that have become damp should be re-dried at 150 º C for 1 hour APPROVED BY LR; ABS; GL – Grade 3Y WI-0304 DS23 RD-718 Rev. 3, Date 01.07.20 13

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