MIG WIRE 309LSI S/S 1.6MM 15KG SPOOL
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Product Overview
The 309LSi Stainless Steel MIG Welding Wire is a premium solid welding wire engineered for welding dissimilar metals and joining stainless steel to carbon or low-alloy steels. Available in a 1.6mm diameter and packed on a convenient 15kg spool, this wire delivers smooth arc performance, excellent bead appearance, and reliable mechanical properties for both structural and general fabrication applications.
Formulated with a higher chromium and nickel content than standard 308 or 309 wires, 309LSi is specifically designed to handle base metal dilution when welding dissimilar or unknown steel combinations — making it a go-to choice for repair work, cladding, and overlay applications.
Key Features
- Grade: 309LSi (Low Carbon, Silicon-enhanced)
- Diameter: 1.6mm
- Spool Weight: 15kg
- Material: Premium Stainless Steel
- Process Compatibility: GMAW / MIG Welding
- Silicon-Enhanced Formula: Improves wetting action, arc stability, and puddle fluidity
- Low Carbon Content: Minimizes carbide precipitation and reduces risk of intergranular corrosion in the heat-affected zone (HAZ)
Benefits & Applications
Superior Arc Performance The added silicon content in the "Si" variant promotes a smoother, more stable arc with reduced spatter, resulting in cleaner welds and less post-weld cleanup.
Ideal for Dissimilar Metal Welding 309LSi is the industry-standard choice for joining stainless steel to mild or carbon steel, buffer layers, and cladding applications where dilution resistance is critical.
Excellent Corrosion Resistance The low carbon content reduces sensitization risk, making this wire well-suited for applications exposed to corrosive environments.
Common Applications:
- Dissimilar metal joints (stainless to carbon/mild steel)
- Buffer layers and overlay welding
- Chemical processing equipment
- Food and beverage processing equipment
- Heat exchangers and pressure vessels
- Exhaust systems and automotive fabrication
- General stainless steel fabrication and repair
Technical Specifications
| Specification | Detail |
|---|---|
| Wire Type | 309LSi Stainless Steel |
| Diameter | 1.6mm |
| Spool Size | 15kg |
| Welding Process | MIG / GMAW |
| Carbon Content | Low (L-grade) |
| Silicon Content | Enhanced (Si-grade) |
Why Choose This 309LSi MIG Wire?
Whether you're a professional fabricator, welding contractor, or industrial workshop, this 1.6mm 309LSi wire on a 15kg spool offers the consistency, feedability, and weld quality needed for demanding stainless steel and dissimilar metal applications. The larger 15kg spool size reduces downtime from frequent spool changes, improving productivity on longer production runs.
This product is priced “per KG”. The minimum quantity available to purchase is shown in the "Pack Qty".
