Joining of crack resistant steels, low alloy steels. Welding on equipment of Oil reneries, pipeline & high temperature synthetic chemical industries. Electric power plant.
1G 2F 3G 4G
1) Preheat at 150 – 250 °C and post heat at 690 ± 15 °C.
2) Dry the electrode a 250 – 300 °C for 60 Min- before use .
3) Keep the arc as short as possible.
| C% | Mn% | Si% | S% | P% | Cr% | Mo% |
|---|---|---|---|---|---|---|
| 0.05- 0.12 | 0.90 Max | 0.80 Max | 0.010 Max | 0.015 Max | 1.0 – 1.50 | 0.40 – 0.65 |
| U.T.S.(N/mm²) | Y.S.(N/mm²) | ELONGATION ( L = 4d ) % | IMPACT(CVN) AT – 18° C ( J ) | Hydrogen(Mercury method) in 100grm weld meta |
|---|---|---|---|---|
| 550 Min | 460 Min | 19 % Min | 27 Joules Min | 5ml Max |
| SIZE ( mm ) | KG PER PACKET | KG PER CARTON | Current (Amps) | In Amps |
|---|---|---|---|---|
| 2.50 X 350 | 5 | 20 | AC/DC (+) | 70 – 100 |
| 3.15 X 350 | 5 | 20 | 100-140 | |
| 4.00 X 350 | 5 | 20 | 140-180 | |
| 5.00 X 350 | 5 | 20 | 180-230 |