StarBlaze SAW 347
AWS A5.9: ER 347 | EN 12072: 19 9 Nb
StarBlaze SAW 347 is a niobium-stabilised stainless steel wire designed for Submerged Arc Welding (SAW) of austenitic stainless steels such as AISI 321 and 347. With a 19Cr/9Ni composition, this wire resists intergranular corrosion by minimising chromium carbide precipitation, thanks to niobium content (Nb ≥ 10×C). It is suitable for fabrication work in industries exposed to corrosive environments at service temperatures below 400°C, and is also used in cryogenic applications. A specialised anti-spatter reagent coating ensures smooth feeding and clean welds in high-deposition SAW processes.
- Diameters: 2.00 mm, 2.40 mm, 3.20 mm, 4.00 mm
- Pack size: 25 kg / 60 lb
Key Features
- Stabilised with niobium for resistance to intergranular corrosion
- Excellent performance in corrosive media and at cryogenic temperatures
- Suitable for welding 18Cr/8Ni type stainless steels (321, 347)
- Anti-spatter reagent coating for clean welding and smooth feeding
- Provides high toughness and ductility
- Compatible with multiple flux systems for stainless steel SAW
- Maintains mechanical integrity up to 400°C service temperature
Industries
- Chemical and Pharmaceutical Equipment
- Food Processing Industry
- Pipe and Vessel Fabrication
- Cryogenic Applications
- Heat-Resistant Structures and Components
Processes
- Submerged Arc Welding (SAW) with suitable flux
- Welding of stabilised and unstabilised stainless steel grades
- Fabrication of plates, vessels, tanks, and process piping
Additional Details
- Suitable for welding 18Cr/8Ni stainless steels, including 321 and 347 types, in combination with SAW flux
- High resistance to corrosion at service temperatures below 400°C
- Niobium addition reduces risk of intergranular corrosion
- Anti-spatter reagent coated (di-chloromethane + methylene chloride)
- Welding Positions: Flat/horizontal (standard for SAW)
- Materials to be Welded:
- AISI 347, 321
- 1.4541 (X6CrNiTi18-10)
- 1.4301 (X4CrNi18-10)
- 1.4550 / 1.4551 (X6CrNiNb18-10)
- Storage: Keep dry; avoid condensation
Product Details
Typical Chemical Composition (%)
| C | Mn | Si | Cr | Ni | Mo | Cu | S | P | Nb |
| 0.08 max | 1.00 – 2.50 max | 0.30 – 0.65 max | 19.00 – 21.50 | 9.00 – 11.00 | 0.50 max | 0.50 max | 0.03 max | 0.03 max | 10*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
| Diameter (mm) | 2.00 | 2.40 | 3.20 | 4.00 |
| Current (A) | 190 – 500 | 300 – 500 | 300 – 500 | 300 – 500 |
| Voltage (V) | 24 – 30 | 26 – 30 | 28 – 30 | 28 – 32 |
