StarBlaze MIG 318
AWS A5.9: ER 318 | EN ISO 14343-A: G 19 12 3 Nb
StarBlaze MIG 318 is a niobium-stabilised stainless steel MIG wire designed for welding 316Ti and 316Nb type stainless steels. It deposits a 19Cr/12Ni/2.5Mo weld metal with enhanced resistance to crevice corrosion in oxidising acid environments. With precision layer winding and controlled cast/helix, the wire ensures smooth feeding and excellent “pay-off” during welding. It is ideally suited for critical fabrication applications involving piping, plates, and pressure vessels in corrosive environments. Supplied in both plastic and metallic basket spools.
- Diameters: 0.6 mm – 1.6 mm
- Pack sizes: 1 kg, 5 kg, 12.5 kg, 15 kg – plastic and metallic basket spools
Key Features
- Niobium-stabilised for welding 316Ti and 316Nb stainless steels
- Excellent resistance to crevice corrosion in oxidising acid environments
- Deposits 19Cr/12Ni/2.5Mo weld metal with consistent mechanical properties
- Ideal for pipes, vessels, and plate fabrication in corrosive service
- Smooth wire feeding through precision layer winding
- Consistent arc with minimal spatter in all welding positions
- Supplied in multiple spool formats to meet varied application needs
Industries
- Petrochemical and Chemical Processing
- Pharmaceutical Equipment
- Heat Exchangers and Pressure Vessels
- Marine and Coastal Applications
- Piping and Structural Fabrication
Processes
- MIG welding using Argon shielding gas (EN ISO 14175: I1)
- Short arc for thin-gauge, positional welding
- Spray and pulsed arc for higher deposition and thicker sections
- Suitable for varying plate thicknesses and all-position welding
Additional Details
- Shielding Gas: Argon (I1)
- Current: DC (+)
- Welding Positions: All positions with pulsed arc
- Provides good resistance to crevice corrosion by oxidising acids
- Ensures smooth, trouble-free wire feeding due to precision layer winding
- Storage: Keep dry; avoid condensation
Product Details
Typical Chemical Composition (%)
| C | Mn | Si | Cr | Ni | Mo | Cu | S | P | Nb |
| 0.08 max | 1.50 – 2.50 | 0.30 – 0.65 | 18.00 – 20.00 | 11.00 – 14.00 | 2.00 – 3.00 | 0.50 max | 0.03 max | 0.03 max | 8*C min – 1.00 max |
Typical All-Weld Mechanical Properties
| Yield Strength (N/mm²) | Tensile Strength (N/mm²) | Elongation A5 (%) | Impact Energy ISO-V(J) 20°C |
| ≥ 400 | ≥ 550 | ≥ 30% | ≥ 65 |
Recommended Welding Data
| Shielding Gas | Unit | 0.8 | 1.0 | 1.2 |
| 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 |
