K-91TB9 description:
All-position welding provide the metal of 9%Cr-1%Mo-Ni-Nb-V
Excellent creep rupture strength, easy slag removal and good weld soundnees
The shielding gas should be used 80%Ar+20%CO2 for welding.
Preheat at 200~350℃ and postheat at 720~780℃
wire should be used as soon as possible after taking out from package.