ER70S-6 Welding Wire Supplier | Copper-coated solid wire| MIG Wire ER50-6 G3Si1

Name: ER70S-6 Welding Wire Supplier | Copper-coated solid wire| MIG Wire ER50-6 G3Si1
Brand: Vertex Alloy
SKU: d1a26cbe-888f-4be2-ae40-08534eb8bb34

Copper AlloyOthers

ER70S-6 copper-coated carbon steel welding wire supplied by Shanghai Vertex Alloy Co., Ltd — AWS A5.18 / GB/T 8110 ER50-6 / ISO 14341 G3Si1 MIG wire on spools and drums with 500 MPa deposited strength.

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Description (English)

Shanghai Vertex Alloy Co., Ltd (Vertex Alloy) supplies ER70S-6 copper-coated carbon steel solid welding wire to AWS A5.18 / ASME SFA-5.18, equivalent to GB/T 8110 ER50-6 and EN ISO 14341-A G3Si1. Sizes Ø 0.8–2.0 mm on 1 kg / 5 kg / 15 kg spools and 250 kg / 350 kg bulk drums, for MIG/MAG (GMAW) and TIG (GTAW) welding with 100% CO₂ or Ar/CO₂ mixed shielding gas. High manganese and silicon deoxidizers tolerate mill scale, light rust and poor fit-up, delivering a stable arc, low spatter, smooth X-ray quality beads and minimal porosity. Deposited metal: tensile ≥500 MPa, yield ≥420 MPa, elongation ≥22%, impact ≥27 J at -30°C — ideal for structural steel, shipbuilding, pipelines, automotive and pressure vessel fabrication of 500 MPa-grade carbon and low-alloy steels (Q235, Q355, A36, A572). Every lot ships with an EN 10204 3.1 certificate; CCS/ABS/BV/LR/DNV class approvals available. Contact us for the latest stock and pricing.

Size Range

0.8–2.0 mm
1 kg D100 / 5 kg D200 / 15 kg D270–D300

Grade Specification

System	Value
AWS	ER70S-6 (A5.18 / A5.18M)
🇺🇸 ASME	SFA-5.18 ER70S-6
🇨🇳 GB	GB/T 8110 ER50-6
ISO	EN ISO 14341-A G3Si1 / G 42 3 C1 3Si1
🇩🇪 DIN	SG2 (DIN 8559, superseded)
🇯🇵 JIS	Z3312 YGW12 (similar)

Chemical Composition

Element	Value
C	0.06–0.15
Mn	1.40–1.85
Si	0.80–1.15
P	≤ 0.025
S	≤ 0.025
Ni	≤ 0.15
Cr	≤ 0.15
Mo	≤ 0.15
V	≤ 0.03
Cu	≤ 0.50
Fe	Balance

Mechanical Properties

Property	Value
Tensile Strength	≥ 500 MPa (72 ksi)
Yield Strength	≥ 420 MPa (60 ksi)
Elongation	≥ 22%
Impact (CVN)	≥ 27 J at -30°C

Physical Properties

Property	Unit	Value
Density	-	7.85 g/cm³
Melting Point	-	≈ 1,500°C
Wire Diameter Tolerance	-	-0.02 mm
Gas Flow Rate	-	15–25 L/min
CTWD (Stick-out)	-	10–20 mm

Applications

Structural Steel
Shipbuilding
Pipeline
Pressure Vessels
Automotive
Heavy Equipment
General Fabrication