Weld Star – A30 (ER 70S-A1) TIG Wire (3.2mm) 5kg

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SKU: 3010300424 Category:
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Introducing Weld Star A30 TIG Wire (3.2mm) 5kg, your solution for welding low alloy creep resistant steels with precision and reliability. Crafted with 0.5% molybdenum and copper coating, this wire ensures superior heat resistance and weld deposit resilience against cold cracking.


  • Copper coated heat-resisting wire with 0.5% molybdenum.
  • Designed for welding low alloy creep resistant steels, offering high tensile strength.
  • Weld deposit highly resistant to cold cracking.
  • Recommended working temperatures of up to 500°C.
  • Green wire crafted from virgin raw materials sourced from specialized steel mills, ensuring consistent reliability and quality.


  • Ideal for construction of steam boilers, pressure tanks, gas pipes, and shipbuilding.
  • Widely used in the petrochemical industry, heat exchangers, and building of cranes and bridges.
  • Suitable for welding materials like P295GH, P355GH, 16Mo3, and more (non-exhaustive list).


  • Conforms to EN ISO 636-A (W 2Mo) and AWS A5.28 (ER 70S-A1) standards.

Chemical Composition (%):

  • C: 0.09%
  • Si: 0.60%
  • Mn: 1.20%
  • P: <0.015%
  • S: <0.015%
  • Cu: <0.25%
  • Cr: <0.15%
  • Ni: <0.10%
  • Mo: 0.50%
  • Al: <0.030%
  • V: <0.020%
  • Zr+Ti: <0.050%

Mechanical Properties (Typical):

  • Tensile Strength: 610 MPa
  • Yield Strength: 520 MPa
  • Elongation: 25%
  • Impact Strength: 150 J (>47 J at -40°C)

Shielding Gas:

  • Recommended shielding gas: Argon (EN ISO 14175 – TIG: I1)

Welding Positions:

  • Suitable for welding positions PA, PB, PC, PD, PE, PF (EN ISO 6947).

Note: While utmost care has been taken to ensure accuracy, information is subject to change without notice. For specific guidance, refer to test certificates available online at wilkinsonstar247.com.

Unlock precision welding with Weld Star A30 TIG Wire, your trusted companion for superior welds in demanding applications.


Weld Star

Weld Star is a leading brand of welding products, known for their high-quality wires, electrodes, and Infinium welding machines.
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