Low hydrogen electrode depositing 2.25Cr – 1Mo weld metal, display remarkable o strength and creep resistance at elevated temperatures up to 575 C. It is used for welding 21⁄4 Cr-1 Mo creep resistant steel and Cr-Mo-V steels resistant to hydrogen under pressure as well as for cast steels of a similar composition to the weld metal. Typical applications include steam boiler construction, welding of steam and super- heater piping, power plants, oil refinery and chemical plants.
1. Re-dry the electrodes at 250-300°C for one hour, as per our standard recommended practice.
2. Use short arc and stringer bead.
(PWHT : 690 C FOR 1 HR)
|Current Range (Amps)||200-250||150-190||100-140||70-100|