Welding of grain rened steels. Q&T steel, HSLA steel, structural fabrication, Penstocks, Tanks, pressure vessels.
1G 2F 3G 4G
1) Dry the electrode a 250 – 300°C for 60 Min- before use .
2) Preheat at 100 – 200 °C & post heat at 620 ± 15 °C
3) Keep the arc as short aspossble.
| C% | Mn% | Si% | S% | P% | Cr% | Mo% |
|---|---|---|---|---|---|---|
| 0.12 Max | 1.0-1.75 | 0.80 | 0.030 Max | 0.030 Max | 0.90 Max | 0.25-0.45 |
| U.T.S.(N/mm²) | Y.S.(N/mm²) | ELONGATION ( L = 4d ) % | IMPACT (CVN) AT – 50° C ( J) |
|---|---|---|---|
| 620 Min | 530 Min | 22 % Min | 50 Joules |
| 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 |