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

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. UNCONTROLLED MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 4 RD-18C LOW HYDROGEN - IRON POWDER ELECTRODE FOR WELDING LOW ALLOY FERRITIC STEELS USED FOR SEMI-CRYOGENIC WORK DATA SHEET NO. 34 SPECIFICATION AWS A5.5 BS EN ISO 2560-B CLASSIFICATION E8018-C1 E5518-N5 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 C-Mn and low alloy steel plate, pipe forgings and c astings used extensively for service at cryogenic temperatures, eg: LT50. BS 1501-224 Grade 490B Plate. ASTM A333 Grade 6 Pipe. ASTM A350 Grades LF1/LF2 Forgings. ASTM A352 Grade LC2 Castings. Maximum stress relief temperatures should be 620 °C (for 1 hour) C Mn Si S P Ni Fe MIN - - - - - 2.0 MAX 0.12 1.25 0.8 0.03 0.03 2.75 WELD METAL ANALYSIS COMPOSITION % BY Wt. TYPICAL 0.06 0.90 0.3 0.02 0.02 2.5 Bal. PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 550 700 0.2% Proof stress N/mm 2 460 650 Elongation on 4d % 19 24 Reduction of Area (RA) % - 75 WELD METAL PROPERTIES (ALL WELD METAL) Impact energy -60 o C J 27 80 Ø (mm) 2.6 3.2 4.0 5.0 MIN 70 110 140 180 WELDING AMPERAGE AC or DC+ MAX 100 150 190 220 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 DS34 RD-18C Rev. 3, Date 01.12.2013

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