TIG FILLER WIRE 309L 1.6MM STAINLESS/MILD STEEL
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Product Overview
This ER309L TIG filler wire is a high-alloy stainless steel welding rod specifically engineered for joining dissimilar metals — most commonly stainless steel to mild/carbon steel. With a diameter of 1.6mm (1/16 inch), it's one of the most popular sizes for general fabrication, repair work, and industrial welding applications where precision and strong, crack-resistant welds are essential.
Key Features
- Dissimilar Metal Compatibility – Purpose-built for welding 300-series stainless steel to carbon/mild steel, and for joining dissimilar or unknown base metals
- Low Carbon (L-Grade) Formulation – Reduces the risk of carbide precipitation and intergranular corrosion, especially important in multi-pass welding
- High Chromium-Nickel Content – Delivers excellent corrosion resistance and creates a stable austenitic-ferritic weld deposit with good crack resistance
- Smooth, Consistent Feed – Clean surface finish minimizes contamination and produces stable arc characteristics for cleaner welds
- Versatile Base Metal Range – Suitable for clad/overlay welding, buffer layers, and joining 309/309L stainless to mild steel, cast steel, and other alloy combinations
Technical Specifications
| Specification | Detail |
|---|---|
| AWS Classification | ER309L |
| Diameter | 1.6mm (1/16") |
| Form | Straight lengths (typically 1m / 36") |
| Process | GTAW (TIG) |
| Base Metal Compatibility | Stainless steel to mild/carbon steel, dissimilar metals, clad steels |
| Weld Deposit | Austenitic-ferritic, low carbon |
Common Applications
- Welding stainless steel to carbon steel transitions
- Buffer/overlay layers before cladding
- Chemical processing and food-grade equipment fabrication
- Automotive exhaust and piping systems
- Pressure vessels, tanks, and structural transition joints
- General fabrication and repair welding shops
Why Choose ER309L 1.6mm TIG Wire?
Whether you're a professional fabricator, welding contractor, or hobbyist working on mixed-metal projects, this ER309L filler wire offers the reliability and corrosion resistance needed for demanding dissimilar-metal joints. The 1.6mm diameter strikes an ideal balance between control and deposition rate, making it a go-to choice for thin-to-medium gauge material welding.
Used for joining mild steel to stainless steel & also different grades of stainless steels together, 309 grade is a good 'all rounder' to have in your TIG filler rod selection.
This product is priced “per KG”. The minimum quantity available to purchase is shown in the "Pack Qty".