ER70S-6 Copper-Coated Welding Wire is a solid MIG/GMAW welding wire for carbon steel and low-alloy steel welding. It is designed for stable wire feeding, smooth arc performance, low spatter, clean weld appearance, and reliable welding results in steel structures, bridges, shipbuilding, engineering machinery, pressure vessels, coal mine machinery, and building construction.
KYA Fasteners supplies ER70S-6 / ER50-6 copper-coated welding wire in 0.8mm, 0.9mm, 1.0mm, 1.2mm, and 1.6mm diameters, with 5kg, 15kg, and 20kg spool options. The wire is suitable for CO2 gas-shielded welding and selected Ar/CO2 mixed gas applications, supporting all-position welding and bulk supply for distributors, welding suppliers, fabrication plants, and industrial users.
Copper-coated solid wire: Supports smooth feeding, stable current transfer, and consistent MIG welding performance.
ER70S-6 / ER50-6 classification: Suitable for carbon steel and low-alloy steel welding applications.
Stable arc and low spatter: Helps produce cleaner weld beads and reduce post-weld cleanup.
High mechanical performance: Typical tensile strength is 545 MPa, yield strength is 452 MPa, and elongation is 29%.
All-position welding: Suitable for flat, horizontal, vertical, and overhead welding when proper parameters are used.
Multiple spool options: 5kg, 15kg, and 20kg spools are available for workshops, distributors, and bulk industrial supply.
| Specification | Details |
|---|---|
| Product Name | ER70S-6 Copper-Coated Welding Wire |
| Model / Classification | ER70S-6 / ER50-6; ER70S-G / ER50-G options available |
| Wire Type | Copper-Coated Solid MIG/GMAW Welding Wire |
| Material | Carbon Steel, Low-Alloy Steel |
| Surface | Copper Coated |
| Available Diameters | 0.8mm, 0.9mm, 1.0mm, 1.2mm, 1.6mm |
| Weight Per Spool | 5kg, 15kg, 20kg |
| Welding Position | All Positions |
| Shielding Gas | CO2; selected Ar/CO2 mixed gas according to welding procedure |
| Typical Performance | Stable arc, smooth feeding, low spatter, good weld bead appearance, and strong crack resistance |
| Packaging | 5kg / 15kg / 20kg per spool; about 24 tons per 20' GP FCL |
| Main Applications | Steel structures, bridges, shipbuilding, pressure vessels, engineering machinery, coal mine machinery, building construction, and general fabrication |
| Item | Value |
|---|---|
| Chemical Composition | C: 0.08%, Mn: 1.51%, Si: 0.89%, P: 0.015%, S: 0.013%, Ni: 0.016%, Cr: 0.021%, Cu: 0.18%, V: 0.003% |
| Tensile Strength | 545 MPa |
| Yield Strength | 452 MPa |
| Elongation | 29% |
| Low-Temperature Impact Work | 91J at -30°C |
ER70S-6 copper-coated MIG wire is widely used for carbon steel and low-alloy steel fabrication where stable arc performance, smooth feeding, low spatter, strong weld metal properties, and efficient production welding are required.
Steel structure welding and structural fabrication
Bridge fabrication and infrastructure welding
Shipbuilding and marine steel fabrication
Pressure vessels and industrial tank fabrication
Engineering machinery and construction equipment
Coal mine machinery and heavy equipment repair
Building construction, general fabrication, and workshop welding
ER70S-6 welding wire is commonly used with MIG/GMAW welding processes. Shielding gas, wire diameter, voltage, current, polarity, and travel speed should be selected according to the base metal, welding position, joint design, and welding procedure specification.
| Process Factor | Recommendation |
|---|---|
| Welding Process | MIG / GMAW gas-shielded welding for carbon steel and low-alloy steel. |
| Shielding Gas | CO2 or selected Ar/CO2 mixed gas according to welding procedure and bead appearance requirements. |
| Polarity | Use proper MIG welding polarity according to equipment and procedure requirements. |
| Welding Position | All-position welding when the correct wire diameter, current range, gas, and technique are selected. |
| Surface Preparation | Remove excessive rust, oil, paint, moisture, and heavy contamination for better weld quality. |
| Selection Factor | What to Check |
|---|---|
| Wire Diameter | Choose 0.8mm, 0.9mm, 1.0mm, 1.2mm, or 1.6mm according to plate thickness, welding current, welding position, and equipment capacity. |
| Spool Weight | Use 5kg for small workshops or portable work, 15kg for common industrial use, and 20kg for higher-volume welding production. |
| Shielding Gas | CO2 is commonly used for cost-efficient welding; Ar/CO2 mixed gas can improve arc smoothness and bead appearance in selected applications. |
| Wire Feeding | Check spool winding quality, copper coating consistency, contact tip condition, liner cleanliness, and feeder roller pressure. |
| Bulk Order | Confirm spool label, carton quantity, pallet packing, container loading, OEM brand, barcode labels, and certificate requirements. |
For welding wire distributors, fabrication plants, shipyards, steel structure factories, bridge contractors, machinery manufacturers, hardware wholesalers, and private-label welding brands, the key purchasing factors are stable feeding, clean copper coating, consistent diameter, chemical composition control, spool winding quality, packaging strength, and reliable bulk supply.
ER70S-6 / ER50-6 classification for carbon steel and low-alloy steel MIG welding.
Copper-coated surface supports smooth feeding and stable arc performance.
0.8mm–1.6mm diameters cover common fabrication and industrial welding applications.
5kg, 15kg, and 20kg spools support workshop, distributor, and production-line requirements.
OEM label, carton design, barcode label, pallet packing, certificate, and container loading support can be discussed.
KYA Fasteners supplies ER70S-6 welding wire, MIG welding wire, nails, staples, hog rings, clips, nailers, staplers, and industrial fastening products for global B2B customers. For copper-coated welding wire, KYA focuses on wire diameter consistency, copper coating quality, spool winding, welding performance, export packaging, and bulk supply support.
Application matching: Diameter, spool weight, shielding gas, welding position, and application field can be matched according to project needs.
Bulk supply capability: Suitable for importers, wholesalers, welding consumable distributors, fabrication plants, shipyards, and machinery manufacturers.
Export packaging support: 5kg, 15kg, and 20kg spool packaging, pallet packing, carton marks, and container loading can be arranged.
OEM service: Private labels, brand packaging, barcode labels, carton design, and custom packing requirements can be discussed.
ER70S-6 welding wire is used for MIG/GMAW welding of carbon steel and low-alloy steel in steel structures, bridges, shipbuilding, engineering machinery, pressure vessels, coal mine machinery, building construction, and general fabrication.
ER70S-6 is a solid welding wire classification commonly used for mild steel MIG welding. It is selected for stable arc performance, good deoxidizing ability, and reliable weld bead quality.
Available diameters include 0.8mm, 0.9mm, 1.0mm, 1.2mm, and 1.6mm. The correct diameter should be selected according to plate thickness, welding current, welding position, and equipment capacity.
KYA supplies 5kg, 15kg, and 20kg spool options. 15kg spools are commonly used for industrial MIG welding, while 20kg spools are suitable for higher-volume production.
ER70S-6 welding wire is commonly used with CO2 shielding gas or selected Ar/CO2 mixed gas, depending on the welding procedure, base metal, bead appearance requirement, and productivity target.
Copper coating helps improve wire feeding, electrical conductivity, current transfer, and arc stability. It also supports smoother operation in MIG welding equipment when the wire is properly stored and used.
Typical mechanical properties include tensile strength of 545 MPa, yield strength of 452 MPa, elongation of 29%, and low-temperature impact work of 91J at -30°C.
Yes. ER70S-6 can support all-position welding when the correct wire diameter, shielding gas, current range, voltage, travel speed, and welding technique are selected.
Store welding wire in a clean, dry, and ventilated area. Avoid moisture, oil, dust, and damaged packaging to maintain stable wire feeding and reduce welding defects.
Yes. KYA can support OEM labels, carton marks, barcode labels, brand packaging, pallet packing, certificate support, and export container loading for welding wire distributors and industrial buyers.
