Product Description
GTW Supplies ER70S-2 TIG Welding Rod – Precision Rod for Mild and Carbon Steel
GTW Supplies ER70S-2 is a high-performance TIG welding rod designed for clean, precise welds on all grades of mild and carbon steel. Engineered with triple deoxidizers—zirconium, titanium, and aluminum—this rod delivers superior arc stability and weld integrity, even on surfaces with mill scale, rust, or light contamination.
Ideal for pipe welding, pressure vessels, and structural steel fabrication, ER70S-2 produces low-porosity welds with excellent mechanical properties and smooth bead appearance. It requires no flux and runs cleanly with 100% argon shielding gas, making it a trusted solution for critical TIG welding applications.
Key Features:
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Designed exclusively for TIG welding (GTAW)
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Triple deoxidized (Zr, Ti, Al) for improved weld quality over contaminated surfaces
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Produces strong, low-porosity welds on mild and carbon steels
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Ideal for root passes and out-of-position welds
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Excellent puddle control and wetting action
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Compatible with 100% Argon shielding gas
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Polarity: DCEP (Direct Current Electrode Positive)
Mechanical Properties:
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Tensile Strength: 70,000 psi
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Yield Strength: 58,000 psi
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Elongation: 22%
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Impact Strength: 35 ft-lbs @ -20°F (Charpy V-Notch)
Common Applications:
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TIG root passes in pipe welding
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Offshore structural repairs
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Pressure vessel fabrication
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Structural steel in construction and shipyards
Typical Wire Chemistry (AWS A5.18 ERC70S-2):
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C: 0.07 | Mn: 0.90–1.40 | Si: 0.40–0.70
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P: 0.025 | S: 0.035 | Ni: 0.15 | Cr: 0.15
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Mo: 0.15 | V: 0.03 | Cu: 0.50
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Ti: 0.05–0.15 | Zr: 0.02–0.12 | Al: 0.05–0.15
Recommended TIG Parameters (100% Argon):
| Diameter | Amperage Range |
|---|---|
| .035" | 60–100 A |
| .045" | 70–120 A |
| 1/16" | 100–125 A |
| 3/32" | 125–175 A |
| 1/8" | 175–250 A |
Why TIG Welders Choose GTW Supplies ER70S-2:
When weld precision, arc stability, and material flexibility matter, professionals turn to GTW’s ER70S-2 TIG rod. Whether you're working in the field or in the shop, it’s a dependable performer that helps you weld with confidence—even when conditions are less than perfect.
