Since all Cr-Mo electrodes produce weld metal which will harden in still air, both preheat & postweld heat treatment are required for most applications. Specially design for Cr-MO Steels with high temp & pressure service condition in steam pipes of boilers. It is used for welding of Iron / 0.5 Mo, 0.5 Cr/0.5 Mo & similar creep resistance steels. Eg. ASTM A 335 – P11’ pipe, ASTM A 387 Gr. II plate.
1G 2F 3G 4G
15-20mm
Carbon Dioxide (CO2) Shielding Gas Flow : 20-25 Lit / Min
15 kgs. vaccum packed plastic spool
| Element | C% | Mn% | Si% | S% | P% | Cr% | Mo% |
|---|---|---|---|---|---|---|---|
| Typical Values | 0.060 | 0.70 | 0.40 | 0.010 | 0.015 | 1.25 | 0.50 |
| Spec. Reqd | 0.05-0.12 | 1.25 Max | 0.80 Max | 0.030 Max | 0.030 Max | 1.00-1.50 | 0.40-0.65 |
| Property | U.T.S (N/mm²) | Y.S (N/mm²) | ELONGATION ( L = 4d ) % |
|---|---|---|---|
| Typical Values | 600 | 545 | 24.50 |
| Spec. Reqd | 550-690 | 470 Min | 19 Min |
| Diameter(mm) | Flat & Horizonta (A) | Flat & Horizontal (V) | Vertical – Up (A) | Vertical – Up (V) | Overhead (A) | Overhead (V) |
|---|---|---|---|---|---|---|
| 1.20 | 180-250 | 26-30 | 120-210 | 22-26 | 150-200 | 26-30 |
| 1.60 | 210-280 | 26-30 | 160-250 | 22-27 | 190-240 | 26-30 |