FOR WELDING DUPLEX STAINLESS STEELS THAT NEED A MATCHING MICROSTRUCTURE IN THE AS WELDED CONDITION - NAMELY 55 TO 65 AUSTENITE 35 TO 45 FERRITE
NDS-25.9.4.NL
CLASSIFICATION
AWS A5.4 E2594-16 | EN ISO 3581-A E 25 9 4 N L B
PRODUCT DESCRIPTION
A metallurgically advanced rutile based flux formulated with balanced additions of chemically basic, amphoteric and acid minerals, together with small alloy additions to compensate for arc losses. The flux is concentrically extruded onto a fully alloyed core wire and bound by a blend of silicates that assures both coating strength and resistance to subsequent moisture absorption.
WELDING FEATURES OF THE ELECTRODE
This unique flux formulation ensures excellent arc stability, ease of initial arc strike and re-strike minimal spatter on AC and virtually none on DC+. The resultant weld seams are smooth, evenly rippled and free from undercut while slag detachability is excellent. Metal recovery is some 103% with respect to core wire weight.
APPLICATIONS AND MATERIALS TO BE WELDED
ASTM A890 6A, ACI CD 3MWCuN and ACICE 3Mn Proprietary alloys include SAF 2507, AVESTA UR47N (CLI), ZERON 100 (WP) UNS S32550, S32520 UR 52N + (CLI), FERRALIUM S D40, DP 3W (SUMITOMO) - MoPlus CARPENTER. Designed for use in the as welded condition they can however be subjected to full heat treatment, eg: 1150ºC then water quenched - but some reduction in ferrite may occur and this should be considered in relation to the specification.
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 150oC for 1 hour
