Applied standards
- TCVN 3223: 2000 E430
- ASME/AWS A5.1 E6013
Characteristics – applications:
- N42 – VD is the electriode under the group of rutile sheath. The welded joints are less defective; arc is stable without splashing and explosion and slags are easily blistered. The well-fined welded joints are ductile and have endurance bending strength. Possibly welding at all positions.
- Suitable for welding low-carbon steel under 430 ~ 490 Mpa load such as rolled-steel structures, barge’s shell, ferry, basin, etc.
Chemical composition (%):
| C | Mn | Si | P | S | |
| Required | Not required | ≤ 0.04 | ≤ 0.03 | ||
| Obtained | – | – | – | 0.030 | 0.015 |
Mechanical property of weld metal:
| Yield strength (Mpa) |
Tensile strength (Mpa) |
Elongation (%) |
Impact value (J) |
|
| Required | ≥ 331 | ≥ 414 | ≥ 17 | Not required |
| Obtained | 420 | 510 | 24 | 00C: 55 Room temperature: 70 |
Instructions for use:
- Clean oil, grease and dust before welding
- If the electrode is wet, dry at 70 ~100 0 C for 30 ~60 minutes before welding
- Process welding edges as regulated
- Select appropriate welding current to avoid possible defects
- Use AC or DC± power
- Size of the electrode and used current:
| Diameter (mm) | Φ 3.2 | Φ 4.0 | |
| Length (mm) | 350 | 400 | |
| Amperage (A) | Flat welding | 120~140 | 160~210 |
| Vertical welding & Bare welding | 90~120 | 130~180 | |
