Nikko Steel Kawat Las Elektroda For High Tensile Low Alloy Steels RD-18G

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. UNCONTROLLED MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 4 RD-18G LOW HYDROGEN - IRON POWDER ELECTRODE FOR WELDING STRUCTURAL STEELS SUBJECTED TO A SERVICE TEMPERATURE OF -50 0 C DATA SHEET NO. 36 SPECIFICATION AWS A5.5 CLASSIFICATION E8018-G PRODUCT DESCRIPTION The design emphasis of the chemically basic flux is engineered to ensure the optimum weld metal properties demanded by the speci fication 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 sig nificant proportion of iron powder ensures maximum deposition efficiency withou t detracting from its ability to be used in all positions except vertical down. Overall the arc is very stable, slag detachability is good and metal recovery is some 115% with respect to the core wire. APPLICATIONS AND MATERIALS TO BE WELDED PRESSURE VESSEL STEELS PLATES All grades up to BS 1501-225 FORGINGS All grades up to BS 1503-224 PIPES LT50 quality of grade 410 in BS 3603:1977 Such steels and similar are used for the fabricatio n of LPG tankers and storage vessels. The 1% nickel max meets NACE MR0175 requirements fo r corrosion resistance in marine environments. C Mn Si S P Ni Fe MIN * - 1.0 0.25 - - 0.5 MAX 0.12 1.8 0.5 0.02 0.02 1.0 TYPICAL 0.06 1.4 0.4 0.01 0.01 0.8 Bal. WELD METAL ANALYSIS COMPOSITION % BY Wt. * Undiluted weld metal shall have the minimum of at l east one of the element as specified on AWS A5.5-2 006 PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 550 700 0.2% Proof stress N/mm 2 460 620 Elongation on 4d % 19 24 Reduction of Area (RA) % - 65 WELD METAL PROPERTIES (ALL WELD METAL) Impact energy -40 o C J 47 100 Ø (mm) 2.6 3.2 4.0 5.0 MIN 60 90 140 180 WELDING AMPERAGE AC or DC+ MAX 100 150 200 250 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. APPROVED BY LR – Grade 4Y H5 WI-0304 DS36 RD-18G Rev. 4 Date 01.12.2013

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