TIG FILLER WIRE ER347 STAINLESS STEEL 1.6MM
Premium ER347 Stabilized Stainless Steel TIG Welding Wire (1.6mm / 1/16")
Product Overview
ER347 TIG filler wire is a niobium (columbium)-stabilized austenitic stainless steel welding rod engineered for high-temperature and corrosion-resistant applications. This 1.6mm diameter wire is precision-drawn and cut to standard 1-meter (36") lengths, offering smooth, consistent feeding and clean, spatter-free arc starts for professional-grade TIG (GTAW) welding.
Key Features
- Niobium Stabilized – Prevents intergranular carbide precipitation and chromium carbide corrosion during and after welding, especially in the heat-affected zone (HAZ)
- Diameter: 1.6mm (0.063"/1/16") – ideal for medium-thickness stainless steel sheet and pipe welding
- High Purity Composition – Low impurity levels for smooth arc characteristics and minimal spatter
- Excellent Corrosion Resistance – Suitable for high-temperature service up to 800°C (1500°F)
- Bright, Polished Finish – Consistent surface quality for reliable feeding and clean welds
- AWS A5.9 / ASME SFA-5.9 Certified – Meets international welding consumable standards
Typical Chemical Composition
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Chromium (Cr) | 19.0 – 21.5 |
| Nickel (Ni) | 9.0 – 11.0 |
| Niobium + Tantalum (Nb+Ta) | 8×C min – 1.00 max |
| Manganese (Mn) | 1.0 – 2.5 |
| Silicon (Si) | 0.30 – 0.65 |
| Phosphorus (P) | 0.030 max |
| Sulfur (S) | 0.030 max |
Applications
ER347 filler wire is the preferred choice for welding stabilized and non-stabilized austenitic stainless steels (301, 304, 304L, 321, 347, 348) in industries requiring elevated-temperature service and resistance to sensitization:
- Aerospace components and jet engine parts
- Chemical processing and petrochemical equipment
- Power generation piping and boiler systems
- Food and beverage processing equipment
- Pressure vessels and exhaust systems
- Nuclear industry fabrication
Why Choose ER347?
Unlike standard 304/308 fillers, ER347's niobium stabilization makes it the go-to option for welds subjected to repeated heating between 800°F–1500°F, where carbide precipitation would otherwise cause intergranular corrosion. It's especially recommended when welding base metals already stabilized with titanium or niobium (e.g., Type 321 or 347 stainless steel).
Specifications at a Glance
- AWS Classification: ER347
- Diameter: 1.6mm (1/16")
- Length: 1000mm (39.4") straight lengths
- Process: GTAW (TIG) Welding
- Base Materials: 304, 304L, 321, 347, 348 Stainless Steel
- Packaging: Available in 1kg, 5kg tubes/boxes (specify packaging preference)
This product is priced “per KG”. The minimum quantity available to purchase is shown in the "Pack Qty".