LOW HYDROGEN ELECTRODE FOR WELDING COPPER CONTAINING FERRITIC WEATHER-PROOF STEELS
RD-51
CLASSIFICATION
AWS A5.5 E8018-W2 | EN ISO 2560-B E5518-NCC1 | JIS Z 3214DA5816W
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
Used mainly for ‘weathering’ steels containing a similar controlled copper addition, eg: BS4360 Grades WR50A to WR50C ASTM A588 Grades A, B, C, K. A421 types 1 and 2 DIN 1.8960, 1.8961, 1.8963. Proprietary Corten A-B1 (Corus and US steel)
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 150oC for 1 hour
