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

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. UNCONTROLLED MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 4 RD-718G LOW HYDROGEN - IRON POWDER ELECTRODE WITH GOOD TOUGHNESS AT -50 º C DATA SHEET NO. 37 SPECIFICATION AWS A5.5 BS EN ISO 2560-A CLASSIFICATION E7018-G E 46 4 Mn1Ni B 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. 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 S uch steels and similar are used for the fabrication of LPG tankers and storage vessels. The 1% nickel max meets NACE MR0175 requirements for corrosion resistance in marine environments. WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Ni Fe MIN - 1.2 0.2 - - 0.8 MAX 0.12 1.7 0.45 0.03 0.03 1.2 TYPICAL 0.08 1.5 0.3 0.01 0.015 1.0 Bal. * Undiluted weld metal shall have the minimum of at least one of the element (AWS A5.5-2006 ) WELD METAL PROPERTIES (ALL WELD METAL) PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 490 650 0.2% Proof stress N/mm 2 390 600 Elongation on 4d % 22 24 Reduction of Area (RA) % - 70 Impact energy -40 o C J 47 60 WELDING AMPERAGE AC or DC+ Ø ( mm) 2.6 3.2 4.0 5.0 MIN 50 80 110 160 MAX 90 130 170 220 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. APPROVED BY LR – Grade 4Y H5 WI-0304 DS37 RD-718G Rev. 5, Date 01.11.2013

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