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Home / Products / Welding wire / ER70S-6
TKweld presents a high-quality carbon steel MIG/MAG welding wire designed for reliable, consistent performance in a wide range of welding applications. Our ER70S-6 welding wire is manufactured to meet AWS standards and is available in popular diameters 0.8 mm, 0.9 mm, 1.0 mm, 1.2 mm, and 1.6 mm. It is ideal for both industrial and workshop use, providing stable arc characteristics, smooth feeding, and excellent mechanical properties. TKweld’s commitment to quality ensures each spool delivers dependable results every time.
Product Features and Benefits
- Premium Grade Carbon Steel: TKweld’s ER70S-6 wire is made from carefully selected carbon steel, offering good tensile strength, ductility, and toughness. It is suitable for welding low and medium carbon steels, giving welds that stand up to everyday stresses.
- AWS ER70S-6 Chemistry: Formulated to meet AWS ER70S-6 specifications, this wire contains Deoxidizers such as manganese and silicon. These Deoxidizers improve weldable feature, reduce porosity, and produce clean, strong welds even with mildly rusted or dirty base metals.
- Smooth Feedability: The wire’s consistent diameter and precise surface finish ensure smooth feeding through MIG torches and wire feeders. This reduces bird-nesting and downtime, making it a reliable choice for continuous production and long welding runs.
- Stable Arc and Low Spatter: TKweld ER70S-6 provides a stable, controllable arc with minimal spatter. The result is a cleaner work environment, less post-weld cleanup, and improved welding efficiency.
- Excellent Weld Bead Appearance: Welds made with this wire display uniform bead profiles, good wetting, and strong fusion. The finished welds are aesthetically pleasing, making the wire suitable for visible joints and structural work.
- Wide Diameter Range: Available in 0.8 mm, 0.9 mm, 1.0 mm, 1.2 mm, and 1.6 mm, TKweld offers options to match a variety of welding machines, settings, and applications. Pick the appropriate diameter for the material thickness and current capacity you need.
- OEM Customized Support: TKweld supports OEM customers with customized wire specifications, spool sizes, and packaging options. Whether you need private labeling, specific spool diameters, or tailor-made alloys, TKweld can accommodate bulk and custom orders.
- Consistent Quality Control: Each batch is produced under strict quality control procedures to ensure uniform chemical composition, mechanical properties, and dimensional accuracy. This consistency helps reduce rework and maintain production schedules.
- Good Mechanical Properties: Weld deposits made with TKweld’s ER70S-6 exhibit reliable tensile strength, yield strength, and elongation, making them suitable for structural applications, automotive parts, and general fabrication.
- Cost-Effective Performance: Offering strong weld properties at a competitive price, TKweld’s ER70S-6 wire provides excellent value for manufacturers, fabricators, and hobbyists who need dependable welding consumables.
Applications
TKweld’s ER70S-6 MIG/MAG welding wire is suitable for a broad range of applications:
- General fabrication and structural steel work
- Automotive repair and manufacturing
- Heavy machinery and equipment fabrication
- Shipbuilding and offshore structures (where carbon steel is used)
- Pipeline and tubing fabrication (with compatible steels)
- Maintenance and repair operations in factories and workshops
- Metal furniture and frame production
- Agricultural and construction equipment welding
Usage Recommendations
- Machine Compatibility: The wire is compatible with MIG/MAG welding equipment designed for solid carbon steel wires. Use appropriate contact tips, liners, and drive rolls for each diameter to ensure smooth feeding.
- Shielding Gas: For best results, use a common shielding gas mix such as 75% Argon / 25% CO2 or CO2 for short-circuit and spray transfer modes, depending on your welding parameters and joint design.
- Welding Parameters: Adjust voltage, wire feed speed, and travel speed according to the wire diameter and base metal thickness. Follow equipment manufacturer guidelines and perform test welds to dial in optimal settings.
- Surface Condition: Although ER70S-6 is tolerant of minor surface contaminants due to its Deoxidizers, cleaner surfaces yield better weld quality. Remove heavy rust, paint, oil, and thick scale for best results.
- Storage: Store spools in a dry environment and keep them sealed when not in use to avoid moisture pickup. Proper storage extends wire life and maintains optimal welding performance.
Packaging and Supply Options
TKweld offers flexible packaging and supply options to meet the needs of small shops and large manufacturers alike:
- Spool sizes: Small spools for workshops and large coils for industrial use.
- Weight options: Various spool weights to suit consumption rates and inventory preferences.
- Custom labeling: OEM custom branding and product labeling available for bulk orders.
- Export-ready packaging: Secure, protective packaging for safe transport and handling during shipping.
Quality Assurance
TKweld employs rigorous testing and inspection processes to ensure every spool meets performance standards. Chemical composition, mechanical testing, and dimensional checks are part of our standard quality protocol. Customers can rely on consistent product performance backed by technical support and responsive customer service.
Why Choose TKweld’s ER70S-6?
- Trusted brand with a focus on quality and consistency
- Wide diameter selection to match multiple welding needs
- Smooth feeding, stable arc, and minimal spatter for efficient welding
- OEM customization and flexible packaging options
- Cost-effective performance for production and repair work
TKweld’s ER70S-6 welding wire is a dependable choice for fabricators, repair shops, and manufacturers who need a consistent, high-performing carbon steel MIG/MAG wire. With a commitment to quality and customer support, TKweld delivers welding consumables that help professionals get the job done right every time


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 |






Q1: What kind of company are you
A: We are the real professional welding machines supplier, which has production team, R&D team, sales force and after-sale service team. And we have our own welding robot laboratory for research and to provide free technical training
Q2:How do you guarantee product quality
A:We have our own welding laboratory, which not only tests all welding consumables but also provides customers with welding solutions, accumulates a large amount of data experience, and has absolute experience in product quality control
Q3. Do you have any warranty
A: Yes, we have. One year warranty for welding rod
Q4. What certification do you have
A: All of our product shave 8 countries classification societies quality certification which ensures the quality and safety. Our products are under strict quality management to ensure supreme quality
Q5: What's the package
A: 5kg; 15kg; 20kg as one spool
Q6: What is delivery time / lead time
A: The goods will be shipped within15-30 days after the receipt of your payment
Q7: What is your minimum order
A: 500kgs
Q8: What is your payment term
A:1- 30% down payment for order confirmation, 70% before shipment. 2- 100% at sight LC
Q9:Can you send the samples for testing
A: Yes, we can support sample free for send Express charges pay by new client, second test sample all free