MIG WIRE LINCOLN ULTRAMAG S4 MILD STEEL 1.2MM
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Lincoln Ultramag S4 Mild Steel MIG Welding Wire – 1.2mm
Product Overview
The Lincoln Ultramag S4 MIG Wire (1.2mm) is a premium copper-coated, solid mild steel welding wire engineered for high-performance MIG (GMAW) welding applications. Manufactured by Lincoln Electric, a globally trusted name in welding technology, Ultramag S4 delivers consistent arc stability, excellent feedability, and superior weld quality across a wide range of mild and low-alloy steel fabrication tasks.
Key Features
- Premium Copper Coating – Ensures smooth, uninterrupted wire feeding through the torch liner and contact tip, reducing feeding faults and downtime
- Consistent 1.2mm Diameter Tolerance – Precision-drawn for uniform arc characteristics and stable wire feed speed
- High Silicon-Manganese Deoxidation (S4 Classification) – Produces cleaner welds with reduced porosity, even on mildly rusted or oily base metals
- Smooth, Spatter-Reduced Arc Performance – Minimizes post-weld cleanup and grinding time
- High Deposition Efficiency – Maximizes productivity on both manual and automated/robotic welding systems
- Excellent Mechanical Properties – Delivers strong, ductile welds with reliable tensile strength
Technical Specifications
| Specification | Detail |
|---|---|
| Brand | Lincoln Electric |
| Product Line | Ultramag S4 |
| Material | Mild Steel (Copper-Coated Solid Wire) |
| Diameter | 1.2mm |
| Classification | AWS A5.18 ER70S-6 (typical S4 equivalent) |
| Shielding Gas | CO2 or Argon/CO2 Mix (75/25 or 80/20) |
| Application | MIG/MAG Welding (GMAW) |
Ideal Applications
This wire is well-suited for:
- General fabrication and structural steel welding
- Automotive repair and body shop work
- Sheet metal and thin-gauge steel welding
- Pipe and tube welding
- Agricultural and heavy equipment repair
- Manufacturing and production line welding
- Both semi-automatic and robotic/automated welding setups
Why Choose Lincoln Ultramag S4?
Lincoln Ultramag S4 is formulated to perform reliably even on surfaces with light mill scale or rust, thanks to its enhanced deoxidizer content. Welders benefit from a stable, spatter-free arc, strong weld penetration, and a smooth bead appearance — making it a preferred choice for both workshop professionals and industrial production environments where consistency and productivity matter most.
Recommended For
Fabricators, welders, contractors, and manufacturing facilities seeking a dependable, high-quality 1.2mm mild steel MIG wire that reduces downtime, improves weld aesthetics, and delivers dependable results on every pass.
This product is priced “per KG”. The minimum quantity available to purchase is shown in the "Pack Qty".
