1. MANUFACTURERS OF A DIVERSE RANGE OF ADVANCED WELDING CONSUMABLES SECTION 4 RD-100D2 LOW HYDROGEN IRON POWDER ELECTRODE FOR WELDING STEELS WITH A MINIMUM UTS OF 700 N/mm 2 DATA SHEET NO. 41 SPECIFICATION AWS A5.5 BS EN ISO 18275B CLASSIFICATION E10018-D2 E6918-4M2 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 power, 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 Suitable for welding steels with a minimum UTS of 700 N/mm 2 meeting the properties both as welded or after PWHT. T ypical materials include ASTM A514 used for pressure vessels, bridges and offshore constructional work. The addition of Mo increases weld metal strength at elevated temperature and maintains UTS after PWHT and provides increased resistance to corrosion. WELD METAL ANALYSIS COMPOSITION % BY Wt. C Mn Si S P Ni Mo Fe MIN - 1.65 - - - - 0.25 MAX 0.15 2.0 0.8 0.03 0.03 0.9 0.45 TYPICAL 0.12 1.9 0.4 0.01 0.02 0.5 0.35 Bal. WELD METAL PROPERTIES (ALL WELD METAL) PROPERTY UNITS MINIMUM TYPICAL OTHERS Tensile strength N/mm 2 690 800 0.2% Proof stress N/mm 2 600 720 Elongation on 4d % 16 22 Reduction of Area (RA) % - 65 Impact energy -50 o C J 27 48 PROPERTIES ACHIEVED EITHER AS WELDED OR AFTER PWHT WELDING AMPERAGE AC or DC+ Ø (mm) 2.6 3.2 4.0 5.0 MIN 60 90 140 180 MAX 100 150 190 240 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 DS41 RD-100D2 Rev. 1, Date 10.11.2010