Nikko Steel Kawat Las Elektroda Mo & CrMo Alloyed Heat & Creep Resisting Steels RD-502

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 5 RD-502 BASIC COATED LOW HYDROGEN ELECTRODE FOR WELDING 5Cr-0.5Mo STEELS IN SERVICE AT ELEVATED TEMPERATURES UP TO 600 º C DATA SHEET NO. 53 SPECIFICATION AWS A5.5 BS EN 1599 JIS Z 3223 CLASSIFICATION E8016-B6 E CrMo5 B DT2516 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 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 PLATES TO: ASTM A537 (pressure vessels). SECTIONS/BART TO: BS1501 Grade 625 FORGINGS TO: BS1503 Grade 625 ASTM A336 Grade F5. CASTINGS TO: BS1504 Grade 625 and BS3100 Grade B5. ASTM A217 C5. PIPES TO: BS3604 Grade HFS625 and CFS 625, ASTM A155 Grade 5Cr and A335 Grades P5 and P5b (high silicon). TUBES TO: BS3604 Grades HFS 625 and CFS 625, ASTM A199 Grade T5 (refinery service) and A213 Grade T5 and T5b (boiler superheaters). Preheat & Interpass temperature : 180 - 230 º C. WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Cr Ni Mo Fe MIN 0.05 - - - - 4.0 - 0.45 MAX 0.10 1.0 0.9 0.03 0.03 6.0 0.4 0.65 TYPICAL 0.06 0.5 0.3 0.01 0.01 5.0 0.1 0.55 Bal. ALL WELD METAL PROPERTIES PROPERTY PWHT 750º 1 HOUR MIN TYPICAL PWHT 750º 2 HOURS TYPICAL PWHT 750º 3 HOURS TYPICAL Tensile strength 550 615 610 540 0.2% Proof stress 460 505 480 360 Elongation on 4d 19 26 27 29 Reduction of Area (RA) - 65 69 75 Impact energy -10 o C - 75 50 50 WELDING AMPERAGE AC or DC+ Ø (mm) 2.6 3.2 4.0 5.0 MIN 50 75 130 180 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 DS53 RD-502 Rev. 3, Date 01.08.2011

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