K-91TB3 description:
Wire is a titania type of flux cored wire for all-position welding.
The weld metal contains about 2.25Cr, 1.0%Mo and has good crack- resistance and heat-resistance.
It has excellent creep rupture strength, easy slag removal and good weld soundness.
The shielding gas should be used 100%CO2 for welding.
Preheat at 200∼350℃ and postheat at 690℃.