Applied standards
- AWS: ER -308
Characteristics – applications:
- VD – 308 is the rustless steel-coated welding wire. Used for welding MIG (protective gas – Ar) or making a paste wire for TIG welding.
- Suitable for welding rustless steel with grades 201, 304 and other rustless steel grade having Cr and Ni content of 18~21% and 9~ 11 %, respectively. The product is widely used in chemical industry, food industry, medical equipment and instruments, civil structures, etc.
- Welding to repair kinds of high-carbon steel that other electrodes cause them to be cracked.
Chemical composition (%):
| C | Mn | Si | P | S | Cr | Ni | |
| Required | ≤ 0.08 | 0.5 ~ 2.5 | ≤ 0.9 | ≤0.04 | ≤0.03 | 18~21 | 9 ~11 |
| Obtained | 0.05 | 1.0 | 0.7 | 0.02 | 0.014 | 19.0 | 10.2 |
Mechanical property of weld metal:
| Tensile strength (Mpa) |
Elongation (%) |
|
| Obtained | 550 | 38 |
Instructions for use:
- Clean oil, grease and dust before welding
- Process welding edges in specification
- Select appropriate welding current to avoid possible defects
- Size of the welding wire and used current:
| Diameter | Ø 0.8 | Ø 0.9 | Ø 1.0 | Ø 1.2 | Ø 1.4 | Ø 1.6 |
| Welding current (A) | 50~150 | 80~200 | 100~250 | 150~300 | 140~280 | 180~450 |
| Welding voltage(V) | 20~28 | |||||
| Specification | 5 kg/coil | |||||
| Used gas | Ar | |||||
