Lastek 1222 is a Cr-Mo alloyed electrode for joining heat resistant steels with a chromium content of approx. 2.5 % and a molybdenum content of approx.1.2 %.
The deposit is heat resistant up to 600 °C (1110 °F).
Good welding properties, also in position.
Steamproduction: boilers, overheating tubes, flanges, collectors, ...
Welding 10CrMo910, 10CrSiMoV7, GS12CrMo910, …
Maintain a short arc length, electrode almost vertical to the workpiece.
Use dry electrodes, dry them at least 2 hours at 300 °C (570 °F).
Preheating and heattreatment: follow the instructions of the base metal producer, or ask Lastek for advice.