GTW ER70S-2 TIG Rod | 1lb Tube

GTW ER70S-2 TIG Rod | 1lb Tube

GTW
SKU:
WMS-70S2-1/8-1 | WD08
$10.52
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Description

ER70S-2 TIG Welding Wire – Triple Deoxidized Precision for Mild and Carbon Steel

ER70S-2 is a high-quality TIG welding wire engineered for precision welding on all grades of mild and carbon steels. As a solid, non-copper-coated wire, it is triple deoxidized with zirconium, titanium, and aluminum—making it especially effective for welding over surfaces that contain mill scale, light rust, or oil residue. This deoxidizer formulation significantly minimizes porosity and ensures consistent, defect-free welds.

Used exclusively in Gas Tungsten Arc Welding (GTAW), ER70S-2 is ideal for root pass welding, critical fabrication, and precision welding in industries such as aerospace, pipeline, automotive, and structural steel. It operates with a stable arc and produces excellent bead appearance under 100% argon shielding gas.

Key Features:

  • Formulated for clean, stable TIG arc performance

  • Triple deoxidized (Zr, Ti, Al) for superior tolerance to base metal contaminants

  • Produces x-ray quality welds with minimal spatter or porosity

  • No flux required, reducing post-weld cleanup

  • Excellent mechanical properties and bead profile

Welding Position:

  • Flat (F), Vertical (V), Overhead (OH), Horizontal (H)

Welding Current:

  • Direct Current Electrode Positive (DCEP)

Mechanical Properties:

  • Tensile Strength: 70,000 psi

  • Yield Strength: 58,000 psi

  • Elongation (in 2"): 22%

  • Impact Toughness: 35 ft-lb at -20°F (Charpy V-Notch)

Typical Chemical Composition (% per AWS A5.18):

Element Content
C 0.07
Mn 0.90–1.40
Si 0.40–0.70
P 0.025 max
S 0.035 max
Ni 0.15 max
Cr 0.15 max
Mo 0.15 max
V 0.03 max
Cu 0.50 max
Ti 0.05–0.15
Zr 0.02–0.12
Al 0.05–0.15

 

Typical GTAW Parameters:

Diameter (in / mm) Voltage (V) Amperage (A) Shielding Gas
0.035 / 0.9 13–16 60–100 100% Argon
0.045 / 1.14 13–16 70–120 100% Argon
1/16 / 1.6 12–15 100–125 100% Argon
3/32 / 2.4 15–20 125–175 100% Argon
1/8 / 3.2 15–20 175–250 100% Argon

 

Typical Applications:

  • Root pass and out-of-position welding

  • Structural steel and heavy equipment fabrication

  • Pipe welding and pressure vessels

  • Aerospace and automotive components

  • Maintenance and repair welding

Specification Compliance:

  • AWS A5.18 / ASME SFA 5.18 ER70S-2

  • ISO 14341-A: W 42 2 W2Si

ER70S-2 is the wire of choice for professional TIG welders who demand consistent arc control, low hydrogen content, and weld quality you can trust under demanding service conditions.