LOW HYDROGEN - IRON POWDER ELECTRODE FOR WELDING 3 to 3.5% NICKEL STEELS USED FOR CRYOGENIC WORK DOWN TO -800C
RD-18C2
CLASSIFICATION
AWS A5.5 E8018-C2 | EN ISO 18275-A E 55 7 Z3Ni B
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 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 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
Fabrication of cryogenic plant and pipework mainly in the petrochemical industry operating down to -80 °C. Materials to be welded include: ASTM A333 - Grade 3 BS1503 - Grade 503 ASTM A350 - Grade LF3 Castings BS1504 - Grade 503 LT and ASTM A352 - Grade LC3 For service temperature below -80 °C please contact technical department.
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 150oC for 1 hour
