KYA 0.035 Inch ER70S-6 Welding Wire is a copper-coated mild steel solid wire designed for GMAW/MIG welding of carbon steel and selected low-alloy steel applications. The 0.035-inch diameter corresponds to approximately 0.9mm, making it a widely used wire size for general fabrication, structural steel, machinery, shipbuilding, automotive components, and other industrial welding applications.
ER70S-6 contains relatively high levels of manganese and silicon deoxidizers, helping provide stable welding performance, good wetting, and consistent weld bead formation. The copper-coated surface supports smooth feeding and reliable electrical contact through compatible MIG welding equipment.
Designed for use with 100% CO2 or suitable argon-based shielding gas mixtures, this gas-shielded welding wire provides stable arc characteristics, controlled spatter, good weld bead appearance, and reliable mechanical properties for professional fabrication and production welding.
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| Specification | Details |
|---|---|
| Classification | ER70S-6 / ER50-6 |
| Product Type | Solid Gas-Shielded MIG / GMAW Welding Wire |
| Nominal Diameter | 0.035 Inch / Approximately 0.9mm |
| Other Available Diameters | 0.8mm, 1.0mm, 1.2mm, 1.6mm |
| Material | Copper-Coated Mild Steel |
| Welding Process | GMAW / MIG / MAG |
| 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 |
| Package | 5kg / 15kg / 20kg per spool |
ER70S-6 welding wire contains manganese and silicon deoxidizers that help improve weld metal quality and arc performance. The following values are the chemical composition data provided for this 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 the welding procedure, shielding gas, base material, heat input, 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, material thickness, shielding gas, transfer mode, welding position, wire feed speed, and the approved welding procedure. The following values are reference settings 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 on 0.035 inch / approximately 0.9mm ER70S-6 welding wire. Contact KYA Fasteners for suitable welding parameters based on your MIG machine, shielding gas, base material, plate thickness, and welding application.
Stable Arc Performance: Designed for consistent arc characteristics during professional MIG and GMAW welding.
Smooth Wire Feeding: Copper-coated surface supports consistent feeding through suitable liners, drive rolls, and contact tips.
Controlled Spatter: Proper shielding gas and welding parameters help reduce spatter and post-weld cleaning.
Good Weld Bead Appearance: ER70S-6 chemistry supports good wetting and consistent bead formation.
High Mn and Si Deoxidizer Content: Helps provide good welding performance on carbon steel with moderate mill scale or surface oxidation.
Multiple Shielding Gas Options: Suitable for 100% CO2 and specified argon-based shielding gas mixtures.
Broad Industrial Applications: Suitable for structural fabrication, machinery, shipbuilding, construction, pressure equipment, and general manufacturing.
ER70S-6 is a widely used carbon steel solid wire for MIG, MAG, and GMAW welding. It is designed for joining mild steel and comparable carbon steel components where stable feeding, consistent arc performance, good weld appearance, and production efficiency are required.
| Application | Typical Use |
|---|---|
| Steel Structures | Fabrication and assembly of carbon steel structural components. |
| Shipbuilding | General fabrication of suitable carbon steel marine structures. |
| Engineering Machinery | Welding frames, brackets, assemblies, and fabricated machinery components. |
| Bridges | Structural fabrication subject to approved welding procedures. |
| Pressure Vessels | Applications where ER70S-6 filler metal is permitted by the applicable WPS. |
| Construction Equipment | Fabrication of carbon steel parts for construction machinery. |
| Petrochemical Equipment | Selected carbon steel fabrication according to engineering requirements. |
| Boilers & Power Equipment | Suitable fabrication where the specified welding procedure allows ER70S-6. |
Shielding gas influences arc characteristics, penetration, metal transfer, spatter level, bead profile, and welding parameters. KYA ER70S-6 wire can be used with 100% CO2 or specified argon-based shielding gas mixtures.
| Shielding Gas | Typical Characteristics |
|---|---|
| 100% CO2 | Economical shielding gas commonly used for carbon steel GMAW with strong penetration. |
| Ar + 5% CO2 | Argon-rich mixture for suitable applications requiring different arc and transfer characteristics. |
| Ar + 2% O2 | Argon-rich mixture for selected welding and spray-transfer applications. |
The 0.035-inch diameter, approximately 0.9mm, provides a practical balance between deposition rate, current range, feeding stability, and welding control. It is commonly selected for general fabrication and production environments using compatible MIG welding equipment.
Compared with smaller wire diameters, 0.035-inch wire can provide a higher deposition rate for suitable material thicknesses. Compared with larger diameters, it remains versatile across a broad range of general carbon steel welding applications.
KYA Fasteners supplies ER70S-6 welding wire for welding distributors, industrial suppliers, steel fabricators, machinery manufacturers, shipyards, construction suppliers, and other professional users. Standard spool options include 5kg, 15kg, and 20kg packages.
For an accurate quotation, provide your required wire diameter, spool weight, purchase quantity, destination country, shielding gas, application, and any specific packaging or documentation requirements.
ER70S-6 is a carbon steel solid welding wire commonly used for MIG, MAG, and GMAW welding. Its manganese and silicon deoxidizers support stable welding performance and good weld bead formation.
A nominal 0.035-inch MIG welding wire is approximately 0.9mm in diameter.
It is commonly used for carbon steel fabrication, structural steel, machinery, automotive components, shipbuilding, construction equipment, and other industrial welding applications.
Yes. KYA ER70S-6 welding wire can be used with 100% CO2 shielding gas. Welding current, voltage, and wire feed speed should be adjusted according to the application.
Yes. ER70S-6 can be used with suitable argon-based shielding gas mixtures. KYA lists Ar + 5% CO2 and Ar + 2% O2 among the available gas options.
ER70S-6 is a solid welding wire used with an external shielding gas. It is different from flux-cored welding wire, which has a tubular construction containing flux.
The copper-coated surface helps support stable electrical contact and smooth feeding through suitable MIG welding equipment while providing surface protection during handling and storage.
The supplied reference mechanical property data lists a tensile strength of 545 MPa and a yield strength of 452 MPa under the stated CO2-shielded test conditions.
ER70S-6 can be used for all-position welding when the welding process, transfer mode, parameters, joint configuration, and welding procedure support the required position.
KYA lists 5kg, 15kg, and 20kg spool options. Contact KYA Fasteners to confirm current availability for the required 0.035-inch / 0.9mm specification.
This page focuses on 0.035-inch / approximately 0.9mm wire. Other KYA ER70S-6 diameters include 0.8mm, 1.0mm, 1.2mm, and 1.6mm.
ER70S-6 contains relatively high manganese and silicon deoxidizers, giving it better tolerance to moderate surface oxidation and mill scale than some lower-deoxidizer solid wires. Critical welds should still follow proper surface preparation and approved welding procedures.
Store welding wire in a clean, dry environment and protect opened spools from moisture, dust, oil, and corrosive contaminants. Keep the wire and feeding system clean to maintain reliable feeding performance.
Yes. Welding distributors, industrial suppliers, manufacturers, and professional buyers can contact KYA Fasteners for bulk pricing, spool sizes, available diameters, packaging information, and export requirements.
Looking for 0.035 Inch ER70S-6 copper coated MIG welding wire? Send KYA Fasteners your required wire diameter, spool weight, purchase quantity, destination country, shielding gas, and welding application. We can help confirm the appropriate ER70S-6 specification for your purchasing requirements.
