KYA 0.030 Inch ER70S-6 Welding Wire is a copper-coated mild steel solid wire designed for MIG/GMAW welding of carbon steel and suitable low-alloy steel applications. The 0.030-inch nominal diameter corresponds to 0.8mm, making it a practical choice for thin sheet metal, general fabrication, automotive components, machinery, steel structures, and other industrial welding applications.
Classified as ER70S-6 / ER50-6, this solid welding wire contains manganese and silicon deoxidizers that support stable arc performance, good weld bead formation, and reliable welding on properly prepared carbon steel as well as surfaces with moderate mill scale or oxidation.
The copper-coated surface supports consistent electrical contact and smooth wire feeding through compatible MIG welding equipment. KYA ER70S-6 wire can be used with 100% CO2 and selected argon-based shielding gas mixtures for professional fabrication and production welding.
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| Specification | Details |
|---|---|
| Classification | ER70S-6 / ER50-6 |
| AWS Classification | AWS A5.18 ER70S-6 |
| Product Type | Solid Gas-Shielded Welding Wire |
| Welding Process | MIG / MAG / GMAW |
| Nominal Diameter | 0.030 Inch / 0.8mm |
| Other Available Diameters | 0.9mm, 1.0mm, 1.2mm, 1.6mm |
| Material | Copper-Coated Mild Steel |
| Shielding Gas | 100% CO2, Ar + 5% CO2, Ar + 2% O2 |
| Welding Position | All Positions, subject to welding procedure and transfer mode |
| Typical Polarity | DCEP / DC Electrode Positive |
| Spool Packaging | 5kg, 15kg, 20kg |
ER70S-6 contains manganese and silicon deoxidizers that contribute to weld-metal performance and help improve tolerance to moderate levels of mill scale and surface oxidation. The following chemical composition values are the product data provided for KYA ER70S-6 welding wire.
| Element | C | Mn | Si | P | S | Ni | Cr | Cu | V |
|---|---|---|---|---|---|---|---|---|---|
| Typical % | 0.08 | 1.51 | 0.89 | 0.015 | 0.013 | 0.016 | 0.021 | 0.18 | 0.003 |
Mechanical properties depend on shielding gas, welding parameters, heat input, base material, joint design, and test conditions. The following values are the supplied reference weld-metal properties using CO2 shielding gas.
| Tensile Strength | Yield Strength | Elongation | Impact Energy | Test Temperature | Shielding Gas |
|---|---|---|---|---|---|
| 545 MPa | 452 MPa | 29% | 91 J | -30°C | CO2 |
Welding current and voltage should be adjusted according to wire diameter, base-metal thickness, shielding gas, welding position, transfer mode, wire-feed speed, contact-tip-to-work distance, and the applicable welding procedure. The following values are reference parameters for the KYA ER70S-6 welding wire range.
| Diameter | Welding Current | Welding Voltage | Reference Current |
|---|---|---|---|
| 0.8mm | 50-120 A | 15-22 V | 100 A |
| 1.0mm | 70-180 A | 18-24 V | 150 A |
| 1.2mm | 80-350 A | 18-34 V | 280 A |
| 1.6mm | 140-500 A | 20-42 V | 350 A |
This product page focuses specifically on 0.030 inch / 0.8mm ER70S-6 welding wire. The reference range for 0.8mm wire is 50-120 A and 15-22 V. Actual machine settings should be confirmed through welding trials and the applicable welding procedure before production.
0.030 Inch / 0.8mm Diameter: Suitable for controlled MIG welding of thin and light-gauge carbon steel as well as general fabrication applications.
Smooth Wire Feeding: Copper-coated surface supports consistent feeding through compatible drive rolls, liners, and contact tips.
Stable Arc Performance: Designed to provide consistent arc characteristics for manual, semiautomatic, and production GMAW applications.
Controlled Spatter: Proper welding parameters and shielding gas help maintain controlled metal transfer and reduce unnecessary post-weld cleaning.
Good Weld Bead Formation: ER70S-6 chemistry supports good wetting and uniform bead appearance on suitable carbon steel.
High Mn and Si Deoxidizer Content: Helps provide useful tolerance to moderate surface oxidation and mill scale compared with lower-deoxidizer solid wires.
Multiple Shielding Gas Options: Suitable for 100% CO2 and specified argon-based shielding gas mixtures.
Broad Industrial Use: Suitable for automotive fabrication, steel structures, machinery, construction equipment, shipbuilding, and general manufacturing.
0.030 inch ER70S-6 welding wire is commonly used for MIG/GMAW welding of light-gauge and general-purpose carbon steel components. Its relatively small 0.8mm diameter gives welders good control at lower current ranges while still providing practical deposition rates for fabrication and production work.
| Industry / Application | Typical Welding Use |
|---|---|
| Thin Sheet Metal | Controlled welding of suitable light-gauge carbon steel components. |
| Automotive Fabrication | Suitable automotive parts, body components, brackets, and repair fabrication. |
| General Fabrication | Frames, brackets, cabinets, assemblies, and general mild steel components. |
| Steel Structures | Selected carbon steel structural fabrication according to the applicable welding procedure. |
| Engineering Machinery | Welding suitable machinery components, brackets, enclosures, and assemblies. |
| Shipbuilding | General carbon steel fabrication where the specified welding procedure permits ER70S-6. |
| Construction Equipment | Production welding of suitable carbon steel equipment and fabricated parts. |
| Industrial Manufacturing | Routine MIG welding of carbon steel parts and welded assemblies. |
The 0.030-inch / 0.8mm diameter is commonly selected when welders need better control on relatively thin carbon steel and lower-current applications. Compared with larger-diameter wires, the smaller wire can operate effectively at lower amperage and is therefore useful for sheet metal, light fabrication, automotive components, and similar work.
For higher deposition rates or heavier sections, larger ER70S-6 diameters such as 0.035 inch, 0.045 inch, 1.2mm, or 1.6mm may be more appropriate. The final selection should be based on base-metal thickness, joint design, welding position, production speed, power-source capacity, and the approved welding procedure.
Shielding gas affects arc characteristics, penetration, spatter level, weld bead profile, transfer mode, and operating parameters. KYA ER70S-6 welding wire can be used with 100% CO2 and specified argon-based shielding gas mixtures.
| Shielding Gas | Welding Consideration |
|---|---|
| 100% CO2 | Common economical shielding gas for carbon steel GMAW with strong penetration characteristics. |
| Ar + 5% CO2 | Argon-rich mixture for suitable welding procedures requiring different arc and transfer characteristics. |
| Ar + 2% O2 | Argon-rich shielding mixture for selected industrial welding procedures and transfer modes. |
Always select shielding gas according to the welding procedure, transfer mode, base-metal thickness, welding equipment, required penetration, and required weld properties.
Welding wire diameter affects usable current range, deposition rate, heat input, feeding requirements, and control of the weld pool. Buyers should select the diameter according to the application rather than choosing one wire size for every welding job.
| Wire Diameter | Selection Consideration |
|---|---|
| 0.030 in / 0.8mm | Good control for thinner material, light fabrication, automotive work, and lower-current applications. |
| 0.035 in / 0.9mm | Versatile general-purpose diameter balancing control and deposition rate. |
| 1.0mm | Suitable for general fabrication requiring more deposition capability than smaller wire. |
| 1.2mm | Common industrial size for medium and heavier fabrication with suitable welding equipment. |
| 1.6mm | Higher-deposition industrial welding where the power source and welding procedure support the larger diameter. |
KYA Fasteners supplies ER70S-6 copper-coated MIG welding wire for welding distributors, industrial suppliers, steel fabricators, automotive suppliers, machinery manufacturers, construction companies, and other professional buyers. Standard spool options include 5kg, 15kg, and 20kg packages.
For an accurate quotation, provide the required wire diameter, spool weight, purchase quantity, destination country, shielding gas, welding application, and any specific packaging or documentation requirements.
It is a 0.030-inch nominal, approximately 0.8mm diameter copper-coated carbon steel solid wire designed for MIG, MAG, and GMAW welding applications.
Yes. In welding wire product sizing, 0.030 inch is commonly supplied and identified as approximately 0.8mm diameter.
ER70S-6 is widely used for welding mild steel and carbon steel in automotive fabrication, sheet metal, general fabrication, machinery, steel structures, construction equipment, and other industrial applications.
ER70S-6 is a carbon steel solid electrode classification under AWS A5.18. Buyers requiring specific certificates or compliance documentation should confirm the available documentation for the exact product before ordering.
The 0.030-inch / 0.8mm diameter is commonly selected for relatively thin carbon steel because it can operate at lower current ranges and offers good weld-pool control when the equipment and welding parameters are correctly configured.
KYA's reference data lists a welding current range of 50-120 A and a voltage range of 15-22 V for 0.8mm wire. Actual settings depend on shielding gas, material thickness, joint configuration, wire-feed speed, transfer mode, and welding position.
Yes. KYA lists 100% CO2 as a shielding gas option for this ER70S-6 welding wire. Welding parameters should be adjusted according to the base material and application.
Yes. ER70S-6 can be used with suitable argon-based shielding gas mixtures. KYA lists Ar + 5% CO2 among the shielding gas options for this product.
ER70S-6 is a solid welding wire used with external shielding gas. It is different from flux-cored welding wire, which has a tubular structure containing flux ingredients.
The copper-coated surface helps support consistent electrical contact and smooth wire feeding through suitable MIG welding equipment while helping protect the wire surface during normal handling and storage.
ER70S-6 contains relatively high manganese and silicon deoxidizers, which provide useful tolerance to moderate mill scale and surface oxidation. Critical welds should still be properly prepared according to the applicable welding procedure.
The supplied reference data lists a tensile strength of 545 MPa and a yield strength of 452 MPa under the stated CO2-shielded test conditions.
KYA lists 5kg, 15kg, and 20kg spool options. Contact KYA Fasteners to confirm current availability for the required 0.030-inch / 0.8mm specification.
Store welding wire in a clean and dry environment. Protect opened spools from moisture, dust, oil, and corrosive contaminants, and keep the liner, drive rolls, and contact tip clean to maintain consistent feeding.
Yes. Welding distributors, industrial suppliers, fabricators, manufacturers, and other professional buyers can contact KYA Fasteners for bulk pricing, spool options, packaging information, available diameters, and export requirements.
Looking for 0.030 Inch / 0.8mm ER70S-6 copper coated MIG welding wire? Send KYA Fasteners your required spool weight, purchase quantity, destination country, shielding gas, welding application, and packaging requirements for product confirmation and quotation.
