Low Hydrogen Electrode - OPUS 9 CMV
Standards
| TS EN ISO 3580-A | E CrMo91 B 4 2 H5 |
|---|---|
| EN ISO 3580-A | E CrMo91 B 4 2 H5 |
| AWS A5.5 | E9018-B91 H4 |
Chemical Composition of Weld Metal % (Typical)
| C | Si | Mn | Cr | Ni | Mo | V | Nb | N |
|---|---|---|---|---|---|---|---|---|
| 0,09 | 0,2 | 0,5 | 9,0 | 0,6 | 1,0 | 0,2 | 0,04 | + |
Typical Base Material Grades
- X10CrMoVNb 9-1
- A213 Gr. T91
- A 335 Gr. P91 (T91)
- A 139Gr.T91
- % 9-12 Cr type martensitic stainless steels.
Mechanical Properties
| Yield Strength (N/mm²) | Tensile Strength (N/mm²) | Impact Strength (ISO-V/+20°C) | Elongation ((Lo=5do) (%)) | Heat Treatment |
|---|---|---|---|---|
| min. 530 | min. 620 | min. 47 J | 17 | 760±15 °C / 2-3h / furnace down to 300°C / cooling at (air) |
Features and Applications
- It is a high alloyed, basic coated electrode with low hydrogen content. It shows high creep strength and toughness even when exposed to stress for a long time.
- Recommended for use in steam producing plants, steam pipes and welding of similar Cr-Mo alloyed steels.
- Weld metal’s resistance to high temperatures up to 620°C
- Preheat and interpass temperature should be used at 200-315 °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
- Recomended holding time 4h for heat treatment.
Current Type
- DC(+)
- DC(-) for root pass
Welding Positions
Operating Data
| Product Code | Diametré x Length (mm) | Diameter x Length (inch) | Welding Current (A) | Weight g / 100 pcs |
|---|---|---|---|---|
| 3010100873 | ø2,5 x 350 | ø3/32 x 14 | 80 - 110 | 2220 |
| 3010100876 | ø3,2 x 350 | ø1/8 x 14 | 110 - 140 | 3560 |
| 3010100879 | ø4,0 x 350 | ø5/32 x 14 | 140 - 190 | 5250 |
