OK 74.46 is an LMA electrode alloyed with 0.5% Mo for welding steels for pressure vessels. The running characteristics make it suitable for welding joints in the inclined positions. The composition of the coating is adapted for welding with low currents, making it very suitable for the welding of pipes.
Specifications
Approvals are based on factory location. Please contact ESAB for more information.| Typical Tensile Properties |
|---|
| Condition | Yield Strength | Tensile Strength | Elongation |
|---|
| ISO |
PWHT
1 hour(s) 620 °C | 460 MPa | 560 MPa | 27 % |
| Typical Charpy V-Notch Properties |
|---|
| Condition | Testing Temperature | Impact Value |
|---|
| ISO |
| PWHT | 20 °C | 175 J |
| Typical Weld Metal Analysis % |
|---|
| C | Mn | Si | Cr | Mo |
|---|
| 0.05 | 0.77 | 0.38 | 0.04 | 0.57 |
| Deposition Data |
|---|
| Diameter | Current | Voltage | Efficiency (%) | Fusion time per electrode at 90% I max | Deposition Rate |
|---|
| 2.0 x 300.0 mm | 55-80 A | 22 V | 59 % | 40 sec | 0.7 kg/h |
| 2.5 x 350.0 mm | 75-110 A | 23 V | 59 % | 55 sec | 0.9 kg/h |
| 3.2 x 350.0 mm | 105-150 A | 23 V | 54 % | 66 sec | 1.0 kg/h |
| 3.2 x 450.0 mm | 105-150 A | 25 V | 59 % | 81 sec | 1.2 kg/h |
| 4.0 x 450.0 mm | 140-200 A | 26 V | 65 % | 90 sec | 1.8 kg/h |
| 5.0 x 450.0 mm | 190-270 A | 27 V | 65 % | 104 sec | 2.4 kg/h |
