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0.045" Mild Steel Mig Welding Wire

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ER70S-6 Gas Shielded Welding Wire is a kind of mild steel copper coated welding wire, suitable for 100% CO2 and Argon& CO2 mixed gas protective welding with stable feasibility, good welding seams, less spatters and excellent welding process properties. When welding, the welding wire has fast melting speed, stable arc, less welding spatter, beautiful weld bead formation, strong anti-oxidation and corrosion resistance, low sensitivity of cladding metal pores, and good all-position welding process. Uses: used in large-scale hydraulic steel structures, ships, power stations, boilers and pressure vessels, petrochemicals.
  • 0.045 Inch

  • KYA

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Overview

0.045 Inch Mild Steel MIG Welding Wire (ER70S-6)

0.045 Inch ER70S-6 MIG Welding Wire for steel structures

KYA Fasteners' 0.045 Inch Mild Steel MIG Welding Wire (ER70S-6) is a copper-coated, carbon steel wire designed for superior performance in 100% CO2 or Argon-CO2 mixed gas shielded welding. With a 1.2mm diameter, this wire offers excellent feedability, stable arc, minimal spatter, and high-quality weld seams. Its high tensile strength (545 MPa) and low-temperature impact resistance make it ideal for all-position welding in industries like shipbuilding, pressure vessels, and construction. The wire's low hydrogen and nitrogen content ensures crack resistance, while its thin slag is easy to remove, enhancing productivity. Available in 5kg, 15kg, or 20kg spools, it suits thin to thick plate welding.

Key Features of ER70S-6 Welding Wire

  • Superior feedability with stable arc and minimal spatter

  • High tensile strength (545 MPa) and crack resistance

  • Low hydrogen and nitrogen for durable welds

  • Thin, easy-to-remove slag for efficient cleanup

  • Suitable for all-position welding with CO2 or Argon-CO2 shielding gas

  • Versatile for thin, medium, and thick plate welding

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Product Specifications

Detailed Specifications for ER70S-6 Welding Wire

Specification Details
Product Name ER70S-6 MIG 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%
Ballistic Work 91 J at -30°C
Welding Current 80-350A (1.2mm)
Welding Voltage 18-34V (1.2mm)
Reference Current 280A (1.2mm)

Chemical Composition

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
Close-up of 0.045 inch ER70S-6 MIG welding wire spool

This 0.045 inch ER70S-6 welding wire is optimized for shipbuilding, pressure vessels, and structural welding. Contact KYA Fasteners for bulk orders or custom spool sizes.

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Applications

Applications for ER70S-6 Welding Wire

This ER70S-6 welding wire is ideal for a wide range of heavy-duty welding applications in various industries.

  • Steel structure welding for buildings and bridges

  • Coal mine machinery fabrication

  • Shipbuilding and marine repairs

  • Engineering machinery and heavy equipment

  • Pressure vessels and boilers

  • Petrochemical equipment manufacturing

ER70S-6 welding wire in shipbuilding application         Explore Related Welding Wires
Frequently Asked Questions

FAQs About ER70S-6 Welding Wire

What is ER70S-6 welding wire used for?

It’s used for welding steel structures, ships, coal mine machinery, bridges, pressure vessels, and petrochemical equipment.

What shielding gases are compatible?

The wire works with 100% CO2, Argon + 5% CO2, or Argon + 2% O2 for optimal performance.

Why choose ER70S-6 for welding?

It offers stable arc, minimal spatter, high tensile strength, and crack resistance, ideal for all-position welding.

What are the benefits of its chemical composition?

Low hydrogen (0.08% C, 0.013% S) and nitrogen content reduce porosity and enhance weld durability.

Can I order custom spool sizes?

Yes, KYA offers 5kg, 15kg, or 20kg spools, with customization available upon request.

What welding current and voltage are recommended?

For 1.2mm wire, use 80-350A current and 18-34V voltage, with a reference current of 280A.

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About KYA Fasteners

Why Choose KYA Fasteners for Welding Wire?

With over 20 years of expertise, KYA Fasteners is a trusted leader in welding consumables, delivering high-quality 0.045 inch ER70S-6 MIG welding wire. Our SGS-certified production ensures consistent performance, serving clients in over 50 countries. We ship from Qingdao port within 20-30 days, offering customized spool sizes for industrial welding needs.

  • Global Reach: Exporting to 50+ countries with reliable welding wire

  • Premium Quality: Copper-coated mild steel for superior welds

  • Fast Delivery: Ships worldwide in 20-30 days from Qingdao port

  • Custom Solutions: Tailored spool sizes and packaging options

Enhance your welding projects with ER70S-6 welding wire. Request a free quote today to experience KYA's quality and service.

Contact KYA Fasteners
Trade Shows

Visit KYA Fasteners at Upcoming Trade Shows

Explore our 0.045 inch ER70S-6 MIG welding wire in person at the following events:

  • The 138th Canton Fair, Oct 15th-19th, 2025, Booth No.: 20.1L16-17

  • MITEX 2025 Moscow International Tool Expo, Nov 11th-14th, 2025, Booth No.: 10B 309-310

Contact for Trade Show Details
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QUICK LINKS

Canton-Fair  
The 138th Canton Fair
  Oct 15th-19th, 2025  
Booth No.: 20.1L16-17
 
MITEX 2023 - Moscow International Tool Expo 
MITEX 2025 Moscow International Tool Expo
  Nov 11th- 14th, 2025  
Booth No.: 10B 309-310
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