1. EQUIVALENT STANDARD AND CONFORMITY
- Vietnamese regulation: QCVN 21:2015/BGTVT-D308
- American standard: AWS A5.1 E308
- Japanese standard: JIS D308-16
2. CHARACTERISTICS AND APPLICATION
- G-308 is suitable for welding austenitic stainless steel (Inox) of all kinds, such as E304, E305, and E308, sometimes with good mechanical quality, high strength, and toughness. G-308 is also used in structures that are subject to heavy loads and have high wear resistance.
- G-308 is suitable for welding medical equipment, household appliances, chemicals, civil art structures, stainless steel tanks, steel handrails, etc.
- G-308 has a bright, smooth, easy to remove slag, light electricity, quiet explosion, low smoke, little splash, and a stable arc.
- G-308 is a type of welding rod with a high lime-titanium coating, designed with austenitic weld metal with low hydrogen content and supplemented with a large amount of rare alloying elements such as chromium, nickel, and rare earths to ensure the metal system E308, so it has anti-rust, acid-resistant, and very high mechanical properties.
3. PACKAGING SPECIFICATION
| Net weight of box (Kg) |
Net weight of barrel (Kg) |
| 1 |
12 |
4. MECHANICAL PROPERTIES OF WELD
| Tensile strength limit (MPa) |
Melting limit (MPa) |
Elongation (%) |
| 560 min |
- |
35 min |
5. CHEMICAL COMPOSITION OF WELDING METAL LAYER (%)
| C |
Mn |
Si |
P |
S |
| 0.08 max |
0.5-2.5 |
0.75 max |
0.035 max |
0.035 max |
6. DIMENSION OF WELDING RODS AND USED CURRENT (AC & DC)
| Diameter (mm) |
Ø 3.2 |
Ø 4.0 |
Ø 5.0 |
| Length (mm) |
350 |
400 |
400 |
| Welding current (Ampe) |
Horisontal welding |
90-140 |
140-190 |
180-240 |
| Vertical welding |
80-130 |
120-180 |
160-210 |
7. INSTRUCTIONS FOR USE
- Fully preparing the elements of labor safety before welding. Welding power source is stable.
- When the welding rod is moist, welding is vulnerable to smoke, splashed and unstable, weld is clarified, need to dry at 100oC – 150oC in 40 – 60 minutes before use.
- Removing all traces of oil, dust, dirt on the surface of the weld.
- Making sure the weld gap, bevelled edge of welding materials as prescribed to achieve strong weld.
- Selecting the welding line according to the instructions to obtain the deep weld, high working ability.