StarBlaze MIG 308H
AWS A5.9: ER 308H | EN ISO 14343-A: W 19 9 H
StarBlaze MIG 308H is a solid MAG welding wire formulated for joining AISI 304H and other high-temperature austenitic stainless steels. It deposits a Cr-Ni weld metal (19Cr/9Ni) with a higher carbon content to provide increased strength at elevated temperatures. Precision layer-wound for consistent, smooth feeding, this wire is suitable for the fabrication of pipes and pressure vessels in the petrochemical and power industries. Compatible with mixed gas shielding (Ar+O₂ or Ar+CO₂), it supports short, spray, and pulsed arc operations across a wide range of thicknesses.
- Diameters: 0.6 mm, 0.8 mm, 0.9 mm, 1.0 mm, 1.1 mm, 1.2 mm, 1.6 mm
- Pack sizes: 12.50 kg, 15.00 kg
Key Features
- Higher carbon content for enhanced high-temperature strength
- Ideal for welding AISI 304H and similar heat-resistant steels
- Excellent arc stability and smooth bead appearance
- Precision layer-wound for consistent wire feeding
- Suitable for short, spray, and pulsed arc processes
- Stable mechanical properties even at elevated service temperatures
- Compatible with a wide range of shielding gas mixes
Industries
- Petrochemical Equipment Fabrication
- Pressure Vessels and Piping Systems
- Power Generation and Thermal Plants
- High-Temperature Process Equipment
- Industrial Boilers and Heat Exchangers
Processes
- MAG (GMAW) welding with Ar+2%O₂ or Ar+0.5–5%CO₂
- Fabrication of 304H and high-temp stainless assemblies
- Pulsed arc for all-position welding
- Spray arc for higher deposition on thicker sections
Additional Details
- Shielding Gas: Ar+2%O₂ or Ar+0.5–5%CO₂
- Current: DC (+)
- Welding Positions: All positions with pulsed arc
- High carbon content improves high-temperature strength and creep resistance
- Ideal for fabrication in boilers, pressure vessels, and heat exchangers
- Storage: Keep dry; avoid condensation
Product Details
Typical Chemical Composition (%)
| C | Mn | Si | Cr | Ni | Mo | Cu | S | P |
| 0.04 – 0.08 | 1.60 – 2.50 | 0.30 – 0.65 | 19.50 – 22.00 | 9.00 – 11.00 | 0.50 max | 0.75 max | 0.03 max | 0.03 max |
Typical All-Weld Mechanical Properties
| Yield Strength (N/mm²) | Tensile Strength (N/mm²) | Elongation A5 (%) | Impact Energy ISO-V(J) 20°C |
| ≥ 350 | ≥ 550 | ≥ 35% | ≥ 70 |
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 |
