Copper Coated

JACKSUN MIG 70S2

AWS/ASME: A5.18 ER70S-2

JACKSUN MIG 70S2 is a triple deoxidized copper-coated wire (Ti, Zr, Al) for MIG/MAG and TIG welding of mild and low alloy steels.
Provides excellent toughness, ductility, and crack resistance, even on steels with mill scale or rust.
Ideal for critical applications such as pipelines, boilers, pressure vessels, and structural welding.
Suitable for single-pass and multi-pass welding.
Can be used with CO₂ or Ar+CO₂ mixtures for improved weld quality.

1. Typical Chemical Composition of Weld Metal (% by weight)

0.07-0.10

0.90 – 1.40

0.40 – 0.70

≤ 0.035

≤ 0.025

≤0.15

0.05-0.15

0.02-0.12

0.05-0.15

2. Typical Mechanical Properties of Weld Metal

Property	UTS (MPa)	Yield Strength (MPa)	Elongation (%)	Impact Toughness (J @ -20 °C)
Typical Values	500 – 560	420 – 460	25 – 30	50 – 70

3. Recommended Welding Parameters — AWS A5.18 ER70S-2

Welding Position	Current (A)	Voltage (V)	Shielding Gas	Gas Flow (L/min)
Flat / Horizontal	150 – 320	22 – 32	CO₂ / Ar+CO₂ (75/25)	12 – 20
Vertical / Overhead	100 – 220	20 – 28	CO₂ / Ar+CO₂ (75/25)	12 – 18

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