FOR WELDING 12% CHROMIUM MARTENSITIC STAINLESS STEELS
NSN-410
CLASSIFICATION
AWS A5.4 E410-26 | EN 3581-A E 13 R
PRODUCT DESCRIPTION
A special rutile based flux with a positive ratio of chemically basic minerals to acid minerals that contains all the major alloying elements is extruded onto a high purity ferritic wire. The use of balanced silicates ensures both strength of coating and resistance to moisture absorption.
WELDING FEATURES OF THE ELECTRODE
The arc stability is excellent on both AC and DC+ as is the electrodes ability for initial arc strike and re-striking. Spatter is minimal and the slag is readily detachable leaving smooth evenly rippled seams of pleasing appearance. Metal recovery is some 130% with respect to weight of the core wire. Pre-heat and interpass temperature should be 200 ºC max
APPLICATIONS AND MATERIALS TO BE WELDED
For welding: ASTM 410 - 403 UNS S41000, S40300 BS 410521 EN56A 403517 ASTM A487 Grade CA15. In all cases a pre-heat of 150 - 250ºC should be used and the component allowed to cool to room temperature prior to PWHT
WELDING AMPERAGE AC and DC
OTHER DATA
Electrodes that have become damp should be re-dried at 150oC for 1 hour
