A non-synthetic electrode depositing homogeneous Ni-Cr-Fe alloy composition. It is ideally suited for welding alloys of similar compositions to themselves, for surfacing steel with Nickel-Chromium-Iron alloy when high Manganese contents are not detrimental, for welding clad side of Nickel Chromium-Iron clad steel and dissimilar metal combinations. Specially recommended for welding 9% Ni Steels for cryogenic service. Also used for welding of Nickel-Chromium alloys used for high temperature applications like furnace heating elements and reformer tubes.
1. Ensure the electrodes are dry. Re-dry the electrodes at 300-325°C for one hour.
2. Maintain a short arc, stringer bead and minimize the heat input.
3. Allow the weld to cool down to below 50 C before depositing, the next layer.
4. For dissimilar metal welding, control the dilution by:
a. Operating at lower currents
b. Using stringer beads and faster welding speeds.
|UTS||Elongation||CVN Impact Strength (J)||Lateral Expansion|
|(MPa)||(L= 5d)%||at Minus 196°C||at minus 196°C (mm)|
|Current Range (Amps)||150-180||120-150||80-110||60-70|