KYA 0.045 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. KYA supplies this configuration as a 0.045-inch nominal / 1.2mm product size for industrial welding applications requiring stable wire feeding, consistent arc performance, good weld bead formation, and reliable mechanical properties.
Classified as ER70S-6 / ER50-6, the wire contains manganese and silicon deoxidizers that support welding performance on properly prepared carbon steel and surfaces with moderate mill scale or oxidation. The copper-coated surface helps maintain consistent electrical contact and smooth feeding through compatible MIG welding equipment.
KYA ER70S-6 solid welding wire can be used with 100% CO2 and selected argon-based shielding gas mixtures. Typical applications include structural steel fabrication, engineering machinery, shipbuilding, bridges, pressure vessels, construction equipment, petrochemical equipment, boilers, and general industrial manufacturing.
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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 | 0.045 Inch / 1.2mm Product Size |
| Other Available Diameters | 0.8mm, 0.9mm, 1.0mm, 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 is formulated with manganese and silicon deoxidizers that support stable weld metal performance and help improve tolerance to moderate surface oxidation and mill scale. The following values are KYA product data for ER70S-6 welding wire and should be treated as typical composition data unless a specific certificate or batch test report is supplied.
| 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 |
Weld-metal mechanical properties depend on shielding gas, welding parameters, heat input, base material, joint design, and test conditions. The following values are reference weld-metal properties measured under the stated CO2-shielded test conditions. Actual results can vary with welding procedure, base material, heat input and test method.
| 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 selected 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 starting reference parameters for the KYA ER70S-6 welding wire range. Final settings must be established for the actual welding procedure and equipment.
| 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 |
For the 0.045-inch nominal / 1.2mm ER70S-6 configuration, use the parameter table only as a starting reference. Confirm final machine settings through welding trials and the applicable welding procedure before production.
Stable Arc Performance: Designed to provide consistent arc characteristics for professional MIG and GMAW welding.
Smooth Wire Feeding: Copper-coated wire supports reliable feeding through compatible drive rolls, liners, and contact tips.
Controlled Spatter: Correct welding parameters and shielding gas help provide controlled metal transfer and reduce unnecessary post-weld cleaning.
Good Weld Bead Formation: ER70S-6 chemistry supports good wetting and consistent weld appearance on suitable carbon steel.
Mn and Si Deoxidizers: Relatively high manganese and silicon content helps improve welding performance on material with moderate mill scale or surface oxidation.
Multiple Shielding Gas Options: Suitable for 100% CO2 and specified argon-based shielding gas mixtures.
Industrial 1.2mm Wire Size: Suitable for fabrication applications requiring greater deposition capability than smaller-diameter MIG wires when used with appropriate equipment and welding parameters.
ER70S-6 solid welding wire is widely used for MIG/GMAW welding of carbon steel structures and fabricated components. The 0.045-inch / 1.2mm size is particularly suited to industrial welding equipment and fabrication environments where deposition rate, welding productivity, and consistent feeding are important.
| Industry / Application | Typical Welding Use |
|---|---|
| Steel Structures | Fabrication of carbon steel beams, frames, supports, and structural assemblies. |
| Engineering Machinery | Welding machinery frames, brackets, fabricated parts, and structural assemblies. |
| Shipbuilding | General fabrication of suitable carbon steel marine structures and assemblies. |
| Bridges | Structural welding where ER70S-6 is permitted by the applicable welding procedure. |
| Pressure Vessels | Fabrication subject to material specifications, code requirements, and an approved WPS. |
| Construction Equipment | Production welding of suitable carbon steel construction machinery components. |
| Petrochemical Equipment | Selected carbon steel fabrication according to engineering and welding specifications. |
| Boilers & Power Equipment | Suitable fabrication where ER70S-6 filler metal is specified or approved. |
Shielding gas affects arc stability, penetration, transfer mode, spatter, weld bead profile, and required operating parameters. The appropriate gas should be selected according to the welding procedure and required weld characteristics.
| Shielding Gas | Application Consideration |
|---|---|
| 100% CO2 | Common cost-effective shielding gas for carbon steel MIG welding with strong penetration characteristics. |
| Ar + 5% CO2 | Argon-rich mixture for selected applications requiring different arc and transfer characteristics. |
| Ar + 2% O2 | Argon-rich shielding mixture for suitable industrial welding procedures and transfer modes. |
The 0.045-inch / 1.2mm product size is intended for industrial MIG welding applications requiring higher wire-feed capacity and deposition rates than smaller-diameter wire. It is commonly selected for medium and heavier fabrication when the welding machine, joint design, material thickness, and welding procedure support this wire size.
For buyers selecting between 0.8mm, 0.9mm, 1.0mm, 1.2mm, and 1.6mm ER70S-6 wire, the correct diameter should be based on plate thickness, required deposition rate, welding current, power-source capacity, transfer mode, welding position, and production requirements.
KYA Fasteners supplies ER70S-6 copper-coated welding wire for welding distributors, industrial suppliers, steel fabricators, machinery manufacturers, shipyards, construction suppliers, and other professional buyers. Available 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.
ER70S-6 is a solid carbon steel welding wire used primarily for MIG, MAG, and GMAW welding. It contains manganese and silicon deoxidizers and is widely used in general carbon steel fabrication.
ER70S-6 is a carbon steel solid electrode classification covered by AWS A5.18. Buyers requiring certification or specific compliance documentation should confirm the applicable product documentation before ordering.
The exact mathematical conversion of 0.045 inch is approximately 1.14mm. Welding-wire suppliers may use nominal inch and metric size designations differently, so KYA identifies this product as a 0.045-inch nominal / 1.2mm product size. Confirm the required wire diameter and tolerance if dimensional equivalence is critical.
It is used for industrial carbon steel welding applications including structural fabrication, machinery, shipbuilding, bridges, construction equipment, pressure vessels, boilers, and general manufacturing where ER70S-6 is specified.
Yes. KYA lists 100% CO2 as a shielding gas option for this ER70S-6 welding wire. Welding current, voltage, wire-feed speed, and other parameters should be adjusted according to the application.
Yes. ER70S-6 is commonly used with suitable argon/CO2 shielding gas mixtures. KYA lists Ar + 5% CO2 among the shielding gas options for this product.
ER70S-6 is a solid welding wire that requires an external shielding gas. It is different from flux-cored wire, which has a tubular construction containing flux ingredients.
The copper-coated surface supports consistent electrical contact and smooth wire feeding through compatible MIG welding equipment while helping protect the wire surface during normal handling and storage.
KYA reference test data lists a tensile strength of 545 MPa and a yield strength of 452 MPa under the stated CO2-shielded test conditions. These values should not be treated as universal results for every welding procedure.
For 1.2mm ER70S-6 wire, KYA provides a reference range of 80–350 A and 18–34 V. Actual settings depend on shielding gas, plate thickness, transfer mode, welding position, wire-feed speed and the approved welding procedure.
ER70S-6 can support all-position welding when the wire diameter, transfer mode, welding parameters, joint configuration, equipment, and welding procedure are suitable for the required position.
ER70S-6 has relatively high manganese and silicon deoxidizer content, which provides useful tolerance to moderate mill scale and surface oxidation. Critical welds should still be cleaned and prepared according to the applicable welding procedure.
KYA lists 5kg, 15kg and 20kg spool options. Confirm availability for the required 0.045-inch nominal / 1.2mm specification when ordering.
Store the wire in a clean, dry environment and protect opened spools from moisture, dust, oil, and corrosive contaminants. Keeping the wire, liner, drive rolls, and contact tip clean helps maintain reliable feeding performance.
Yes. Welding distributors, industrial suppliers, fabrication plants, machinery manufacturers, and other professional buyers can contact KYA Fasteners for bulk pricing, spool options, diameter selection, packaging details, and export requirements.
Looking for 0.045 Inch / 1.2mm ER70S-6 copper coated MIG welding wire? Send KYA Fasteners your required diameter, spool weight, purchase quantity, destination country, shielding gas, application, and packaging requirements for product confirmation and quotation.
