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TKweld’s High Quality 1.2mm CO2 Mig Mag Welding Wire ER70S-6 — dependable, consistent, and made from premium carbon steel. Engineered for everyday welding needs, this 1.2mm wire delivers smooth feeding, reliable arc stability, and strong, clean welds across a variety of applications. Whether you’re working in fabrication, repair, automotive, agricultural equipment, or general metalwork, TKweld’s ER70S-6 provides the performance you expect at a competitive price.
Manufactured to tight tolerances, each spool of TKweld 1.2mm wire feeds evenly through MIG and MAG welding machines, reducing bird-nesting and stoppages. The round, uniform surface minimizes friction and ensures steady contact in the wire feeder, translating to fewer interruptions and more productive weld time. This reliability is particularly valuable in busy shops and on job sites where downtime costs money.
The ER70S-6 chemistry is optimized for good puddle control and weld penetration on carbon steel. Its formulation supports excellent Weldability in both flat and vertical positions, produces low spatter, and forms sound, ductile deposits that are easy to clean and grind. As a result, TKweld’s 1.2mm CO2 welding wire helps produce cosmetically appealing welds with less post-weld cleanup, saving time and effort.
TKweld focuses on consistent mechanical properties and sound metallurgical performance. Welds made with this ER70S-6 wire exhibit good tensile strength and toughness suitable for structural and general-purpose joints. The wire’s Deoxidizers and alloying elements are balanced to handle mildly rusted or slightly dirty surfaces better than some alternative wires, offering greater tolerance during real-world welding conditions.
Offered in practical spool sizes, TKweld’s 1.2mm wire is easy to store and handle. Each spool is wound neatly to minimize tangles and packaged to protect from moisture and contaminants that could affect performance. This attention to packaging helps preserve the wire’s quality from the factory through to the job site.
Key features:
- Diameter: 1.2mm for thicker section welding and higher deposition rates.
- Classification: ER70S-6, suitable for CO2 (pure) and mixed gas shielding commonly used in MIG/MAG processes.
- Base material: High-quality carbon steel for durable, strong welds.
- Low spatter and good arc stability reduce cleanup needs and improve appearance.
- Smooth feeding reduces downtime caused by feed issues.
- Balanced chemistry for reliable weld penetration and puddle control.
- Competitive price without compromising performance.
Applications:
- Structural steel fabrication
- Repair and maintenance work
- Automotive and trailer manufacturing
- Agricultural and construction equipment repair
- General manufacturing and metalwork
Using TKweld’s 1.2mm wire is straightforward. Set your MIG/MAG welder to recommended amperage and wire speed ranges for 1.2mm wire and CO2 shielding gas; consult machine guidelines and start with settings suited to the material thickness and joint type. Fine-tune voltage and speed to optimize bead profile and minimize spatter. Good joint fit-up and appropriate travel speed will maximize weld quality and consistency.
Quality control is built into the TKweld process. The wire is drawn and spooled under controlled conditions to ensure uniform diameter and cleanliness. This manufacturing consistency helps reduce variability between spools and batches, so users can rely on repeatable welding behavior. For shops that value steady performance and minimal surprises, TKweld’s ER70S-6 fills a key role.
Safety and storage: like all welding consumables, store TKweld wire in a dry environment to prevent moisture pickup and rust, which can affect welding performance. Handle spools carefully to avoid kinks or surface damage. Wear appropriate personal protective equipment—helmet, gloves, and protective clothing—when welding, and ensure adequate ventilation when using CO2 shielding gas.
TKweld delivers a practical combination of performance and value. The 1.2mm ER70S-6 wire addresses the needs of professionals and hobbyists who require dependable feeding, strong weld properties, and reduced post-weld work without paying premium prices. For everyday welding tasks where steady quality and cost-effectiveness matter, TKweld’s High Quality 1.2mm CO2 Mig Mag Welding Wire ER70S-6 is a smart choice


Items |
C |
Mn |
Si |
S |
P |
Standard Value |
0.06-0.15 |
1.40 -1.85 |
0.80 -1.15 |
≤0.025 |
≤0.025 |
Case of Value |
0.08 |
1.50 |
0.89 |
0.012 |
0.013 |
Items |
Ni |
Cr |
Mo |
V |
Cu |
Standard Value |
≤0.15 |
≤0.15 |
≤0.15 |
≤0.03 |
≤0.50 |
Case of Value |
0.03 |
0.02 |
0.002 |
0.003 |
0.11 |
Items |
Tensile Strength
Rm/MPa
|
Yield Strength Rel/Rp0.2 MPa |
Elongation A/% |
Charpy V-notch impact energy KV2(J)-30℃ |
Standard Value |
≥500 |
≥420 |
≥22 |
≥27 |
Case of Value |
560 |
450 |
26 |
108 |
Welding wire diameter (mm) |
0.8 |
1.0 |
1.2 |
1.6 |
Welding current (A) |
50 - 180 |
70 - 230 |
80 - 350 |
120 - 500 |




All of our products have Classification Society Certifications from eight countries involving (ABS, CCS, DNV, BV, RINA, NK, GL, LR) which ensures the quality and safety


A: Yes, we have. One year warranty for welding rod
Q5: What's the package
A: 5kg; 15kg; 20kg as one spool