SPECIAL RUTILE FLUX CONTAINING A HIGH LEVEL OF HIGH PURITY SILICIOUS MINERALS AND RARE EARTH ELEMENTS THAT DEPOSITS A NOMINAL 20Cr-10Ni WELD METAL WITH EXCELLENT CORROSION RESISTANCE
NS-253
PRODUCT DESCRIPTION
Manufactured on an austenitic core wire of matching composition, the specially modified rutile flux has been metallurgically modified to ensure controlled levels of C-Si-N2. The blend of silicates used during extrusion ensures both coating strength and a coating resistant to subsequent moisture absorption.
WELDING FEATURES OF THE ELECTRODE
Suitable for use on both AC and DC. Welds with a very stable, directional but low penetrating arc. Weld beads are exceptionally smooth and evenly rippled. Slag is normally self detaching and fillet welds slightly concave. The slag is fairly fluid allowing full control of run-out length and the smaller diameters are suited for positional welding.
APPLICATIONS AND MATERIALS TO BE WELDED
Intended / designed to weld similarly alloyed materials when both strength and resistance to oxidation is required up to 1100 ºC. Such wrought alloys are covered under ASTM / UNS S30815 and EN10095 1.4835 (21-11-2). Proprietary alloys include AVESTA 253MA and the similarly alloyed AVESTA 153MA as covered by ASTM UNS S30415. Applications include furnace parts, high temperature flues, exhausts, combustion nozzles, etc
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 180oC for 1 hour
