KYA 0.045 Inch Mild Steel MIG Welding Wire ER70S-6 is a copper-coated carbon steel welding wire designed for MIG and MAG welding with 100% CO2, Argon + CO2, or Argon + O2 shielding gas. With a 1.2mm / 0.045 inch diameter, this ER70S-6 welding wire provides stable arc performance, smooth feeding, low spatter, clean weld seams, and reliable all-position welding performance.
This mild steel MIG welding wire is suitable for steel structures, shipbuilding, pressure vessels, boilers, bridges, coal mine machinery, engineering machinery, heavy equipment, and petrochemical equipment manufacturing. Its 545 MPa tensile strength, 452 MPa yield strength, 29% elongation, and 91 J impact value at -30°C support demanding industrial welding applications.
The following specifications help welding distributors, shipyards, steel structure fabricators, pressure vessel manufacturers, machinery factories, welding consumable importers, and industrial buyers confirm wire diameter, classification, material, shielding gas, mechanical properties, welding parameters, and spool size before ordering.
| Product Name | 0.045 Inch Mild Steel MIG Welding Wire ER70S-6 |
| Product Type | MIG Welding Wire / MAG Welding Wire / Copper-Coated Mild Steel Welding Wire |
| Classification | ER70S-6 / ER50-6 |
| Diameter | 0.045 Inch / 1.2mm |
| Material | Copper-Coated Mild Steel |
| Welding Position | All Positions |
| Shielding Gas | 100% CO2, Ar + 5% CO2, Ar + 2% O2 |
| Spool Weight | 5kg, 15kg, 20kg |
| Tensile Strength | 545 MPa |
| Yield Strength | 452 MPa |
| Elongation | 29% |
| Impact Value | 91 J at -30°C |
| Welding Current | 80-350A for 1.2mm Wire |
| Welding Voltage | 18-34V for 1.2mm Wire |
| Reference Current | 280A for 1.2mm Wire |
| Main Applications | Steel structures, shipbuilding, bridges, pressure vessels, boilers, coal mine machinery, engineering machinery, petrochemical equipment |
| Element | C | Mn | Si | P | S | Ni | Cr | Cu | V |
|---|---|---|---|---|---|---|---|---|---|
| Percentage | 0.08 | 1.51 | 0.89 | 0.015 | 0.013 | 0.016 | 0.021 | 0.18 | 0.003 |
| Stable Arc Performance | Provides smooth arc starting, stable welding performance, and consistent weld bead appearance. |
| Excellent Feedability | Copper-coated surface supports smooth wire feeding in MIG welding equipment and helps reduce downtime. |
| Low Spatter | Helps improve weld quality, reduce cleanup time, and increase productivity in industrial welding lines. |
| High Mechanical Strength | 545 MPa tensile strength and 452 MPa yield strength support demanding structural welding applications. |
| Low-Temperature Impact Resistance | 91 J impact value at -30°C supports applications where weld toughness is required. |
| All-Position Welding | Suitable for all-position welding using CO2 or Argon-based shielding gas mixtures. |
| Multiple Spool Options | Available in 5kg, 15kg, and 20kg spools for workshops, distributors, and industrial welding production. |
ER70S-6 welding wire is suitable for welding thin, medium, and thick mild steel plates in manufacturing, construction, shipbuilding, machinery, pressure equipment, and heavy industrial fabrication. It is a practical choice for welding consumable distributors, steel fabricators, shipyards, boiler factories, machinery manufacturers, and engineering contractors.
| Steel Structures | Used for welding building frames, bridge components, structural steel parts, and fabricated steel assemblies. |
| Coal Mine Machinery | Suitable for welding machinery parts, equipment frames, and industrial steel components. |
| Shipbuilding and Marine Repair | Used in shipbuilding, ship repair, marine structure fabrication, and related steel welding applications. |
| Engineering Machinery | Suitable for heavy equipment, construction machinery, and engineering machinery manufacturing. |
| Pressure Vessels and Boilers | Used for selected pressure vessel, boiler, and tank welding applications according to project standards. |
| Petrochemical Equipment | Supports welding of petrochemical equipment, steel frames, and industrial fabrication components. |
This 1.2mm ER70S-6 MIG welding wire can be used with 100% CO2, Ar + 5% CO2, or Ar + 2% O2 shielding gas. Recommended welding current range is 80-350A, recommended voltage range is 18-34V, and reference current is 280A. Final parameters should be adjusted according to base metal thickness, welding position, joint design, gas flow, and welding machine settings.
When selecting MIG welding wire, buyers should confirm wire classification, wire diameter, base metal type, shielding gas, welding position, spool weight, mechanical properties, chemical composition, welding current range, welding voltage range, packaging requirements, and industrial application. For mild steel structures and industrial fabrication, ER70S-6 is commonly selected when stable arc, smooth feeding, low spatter, and good weld toughness are required.
For high-volume production, 15kg or 20kg spools can reduce spool change frequency. For smaller workshops, repair work, or distributor sample orders, 5kg spools may be more practical. Buyers should also confirm spool compatibility with their MIG welding equipment before bulk ordering.
KYA Fasteners supplies ER70S-6 MIG welding wire, mild steel welding wire, copper-coated welding wire, CO2 welding wire, Argon-CO2 welding wire, welding consumables, industrial fasteners, nails, staples, and fastening solutions for global B2B customers. For welding consumable distributors, steel structure fabricators, shipyards, machinery manufacturers, pressure vessel factories, petrochemical equipment manufacturers, and importers, KYA can support wire selection, spool size selection, sample requests, bulk quotation, and export supply.
Contact KYA Fasteners to request 0.045 Inch Mild Steel MIG Welding Wire ER70S-6 specifications, chemical composition, mechanical properties, spool options, welding parameter guidance, sample support, quotation, and shipping information.
It is used for welding steel structures, shipbuilding parts, bridges, coal mine machinery, engineering machinery, pressure vessels, boilers, and petrochemical equipment.
0.045 inch MIG welding wire is approximately 1.2mm in diameter.
Compatible shielding gases include 100% CO2, Argon + 5% CO2, and Argon + 2% O2.
ER70S-6 provides stable arc performance, smooth feeding, low spatter, strong weld seams, high tensile strength, and good crack resistance for mild steel welding.
Typical values include 545 MPa tensile strength, 452 MPa yield strength, 29% elongation, and 91 J impact value at -30°C.
Recommended current range is 80-350A and recommended voltage range is 18-34V. A reference current of 280A can be used as a starting point.
Available spool weights include 5kg, 15kg, and 20kg.
Yes. This ER70S-6 welding wire is suitable for all-position welding when used with appropriate shielding gas, welding parameters, and welding procedure.
Yes. KYA can support 5kg, 15kg, 20kg, and custom packaging requirements according to distributor or industrial buyer needs.
Yes. Buyers can contact KYA Fasteners to request samples, specifications, chemical composition, mechanical properties, spool options, quotation, and shipping information before bulk ordering.
