Nikko Steel Kawat Las Elektroda Mo & CrMo Alloyed Heat & Creep Resisting Steels RD-16B8

Brosur & Katalog Produk / Brosur & Katalog Produk

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1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 5 RD-16B8 BASIC LOW HYDROGEN ELECTRODE FOR WELDING 9Cr-1Mo STEELS OPERATING UP TO 600 º C DATA SHEET NO. 54 SPECIFICATION AWS A5.5 BS EN 1599 JIS Z 3223 CLASSIFICATION E8016-B8 E CrMo9 B DT 2616 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 its controlled coating factor allows the electrode to be used at relatively low amps. This factor together with the fairly fluid but quick freezing slag facilitate vertical up welding including controlled penetration root runs. Overall the arc is very stable, slag detachability is good, fillet welds are slightly convex and metal recovery is some 98% with respect to weight of the core wire. APPLICATIONS AND MATERIALS TO BE WELDED PLATE ASTM A387 Grade 9, TUBES/PIPES ASTM A335 Grade 9, A234 Grade WP9, A199 Grade T9, A213 Grade T9. BS 3604 Grades CFS & HFS 629-470 CFS/HFS 629-590. FORGINGS A182 Grade F9, A336 Grade F9 CAST ASTM A217 Grade C12, BS1504 Grade 629 and BS3100 Grade B6 PWHT recommended range is 725 – 755 º C and pre-heat 200-250 º C. Cool to 150 º C before PWHT. WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Cr Ni Mo Fe MIN 0.05 - - - - 8.0 - 0.85 MAX 0.10 1.0 0.9 0.03 0.03 10.5 0.4 1.2 TYPICAL 0.06 0.6 0.3 0.01 0.018 9.0 0.1 1.0 Bal. ALL WELD METAL PROPERTIES PWHT : 740ºC For 2 hrs PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 550 720 0.2% Proof stress N/mm 2 460 605 Elongation on 4d % 19 22 Reduction of Area (RA) % - 52 Impact energy -20 o C J - 85 HV AFTER PWHT 230-240 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 DS54 RD-16B8 Rev. 3 Date 01.08.2011

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