StarBlaze MIG 308Si
AWS A5.9: ER 308Si | EN ISO 14343-A: G 19 9
StarBlaze MIG 308Si is a stainless steel MIG wire designed for welding austenitic stainless steels such as AISI 301, 302, 304, and 308. With a 20Cr/9Ni composition and silicon content of 0.65–1.00%, it delivers excellent weldability, arc stability, and bead appearance. Ferrite content is controlled between 5–10% for balanced corrosion resistance and crack resistance. Precision layer winding ensures smooth wire feeding, and the wire is specially processed for clean welds and reliable performance across all welding positions.
- Diameters: 0.8 mm, 1.0 mm, 1.2 mm
- Pack size: 12.50 kg
Key Features
- Optimised for welding 18-8 type stainless steels
- Silicon-enhanced for improved weld pool fluidity and finish
- Excellent corrosion resistance in aggressive environments
- Supports pulsed, short, and spray arc modes
- Consistent arc stability and clean bead profile
- Precision layer-wound for uninterrupted wire feeding
- Suitable for positional and out-of-position welding
Industries
- Food and Beverage Equipment
- Chemical and Pharmaceutical Manufacturing
- Boilers, Tubes, and Piping Fabrication
- Stainless Steel Process Equipment
- General Stainless Fabrication
Processes
- MIG welding with Ar+2%O₂ or Ar+2–3%CO₂
- Welding of AISI 301, 302, 304, 304L, 308, 308L grades
- Pulsed arc for thicker sections, short arc for thinner gauges
- All-position stainless steel joining
Additional Details
- Shielding Gas: 98% Ar + 2% O₂ or Ar + 2–3% CO₂
- Current: DC (+)
- Welding Positions: All positions with pulsed arc
- Corrosion Resistance: Suitable for oxidising and cold dilute reducing acids, equivalent to ER308Si
- Si content improves weldability and bead appearance
- Use short arc for thin sections and spray/pulsed arc for higher deposition and versatility
- Storage: Keep dry; avoid condensation
Product Details
Typical Chemical Composition (%)
| C | Mn | Si | Cr | Ni | Mo | Cu | S | P |
| 0.08 max | 1.60 – 2.50 | 0.65 – 01.00 | 19.50 – 22.00 | 9.00 – 11.00 | 0.25 max | 0.25 max | 0.03 max | 0.03 max |
Typical All-Weld Mechanical Properties
| Yield Strength (N/mm²) | Tensile Strength (N/mm²) | Elongation A5 (%) |
| ≥ 350 | ≥ 550 | ≥ 35% |
Recommended Welding Data
| Shielding Gas | Unit | 0.8 mm | 1.0 mm | 1.2 mm |
| Ar + 1–2% CO₂ | Amp | 40-120 | 80-160 | 100-210 |
| Volt | 15-20 | 16-22 | 17-22 | |
| Ar + 1–2% O₂ | Amp | 160-210 | 180-280 | 200-300 |
| Volt | 24-28 | 24-30 | 24-30 |
