A low hydrogen non synthetic electrode deposits 9Cr – 1Mo and enriched with Niobium, Vanadium, Nitrogen and Tungsten. Tungsten additions provides adequate creep rupture strength at higher steam pressures and temperatures. The controlled addition of alloying elements improves the toughness and weldability. It is designed to weld advanced materials, which are being used to improve thermal efficiency in power plant, refineries etc. Ideal for welding steels of similar composition to achieve adequate creep rupture strength. Some typical materials that are welded with this consumable are A213 T92, A335 P92, A387Gr 92, etc.
1. Ensure the electrodes are dry. Re-dry the electrodes at 300 C for one hour.
2. Use short arc, low current and stringer beads.
(PWHT degrees 760 C FOR 2 HRS)
CREEP PROPERTIES: Creep Strength at 600 C/160MPa successfully completed for 20157 Hours and test still going on.
|Current Range (Amps)||160-220||120-160||90-120||70-100|