Low Hydrogen Electrode - OPUS MOB
Standards
| TS EN ISO 3580-A | E Mo B 4 2 H5 |
|---|---|
| EN ISO 3580-A | E Mo B 4 2 H5 |
| AWS A5.5 | E7018-A1 H4 |
Chemical Composition of Weld Metal % (Typical)
| C | Si | Mn | Mo |
|---|---|---|---|
| 0,07 | 0,4 | 0,9 | 0,5 |
Typical Base Material Grades
- 16Mo3, 22Mo4, 15NiCuMoNb5, 20MnMoNi4-5, 17MnMoV6-4
- S355J2G3, S255N-S500N, S255NH-S500NH, S255NL-S500NL
- E295, E335
- P255G1TH, P295GH, P310GH
- L320-L415NB, L320MB-L415MB
- GE240-GE300, GP240GH
- ASTM A204 plate and A335-P1 pipe.
Mechanical Properties
| Yield Strength (N/mm²) | Tensile Strength (N/mm²) | Impact Strength (ISO-V/+20°C) | Impact Strength (ISO-V/-50°C) | Elongation ((Lo=5do) (%)) | Heat Treatment |
|---|---|---|---|---|---|
| min. 460 | 530 - 670 | min. 47J | min. 47 J | min. 22 | 620°C / 1h / furnace down to 300°C / cooling to (air) |
Features and Applications
- Electrodes with basic covering are usually suitable only for direct current, electrode positive.
- Welding of heat-resisting, Mo-alloyed, fine grained and unalloyed steels used for construction of boilers and pipes
- Typical applications include the welding of C-Mo steel base metals such as ASTM A204 plate and A335-P1 pipe.
- Weld metal is resistant to working temperatures from -50°C to +550°C
- Preheat and interpass temperature should be used at 110 °C.
- The test assembly shall be cooled in the furnace to 300 °C at a rate not exceeding 200 °C/h.
- Re-drying: 300-350°C / min. 2h
Current Type
- DC(+)
Welding Positions
Operating Data
| Product Code | Diametré x Length (mm) | Diameter x Length (inch) | Welding Current (A) | Weight g / 100 pcs |
|---|---|---|---|---|
| 3010100720 | ø2,5 x 350 | ø3/32 x 14 | 80 - 110 | 2200 |
| 3010100723 | ø3,2 x 350 | ø1/8 x 14 | 100 - 140 | 3560 |
| 3010100729 | ø4,0 x 450 | ø5/32 x 18 | 140 - 190 | 6590 |
| 3010100735 | ø5,0 x 450 | ø3/16 x 18 | 190 - 240 | 10160 |
