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Weld Star A32 TIG Welding Wire (ER 80S-B2) 2.4mm 5kg

£43.50 ex VAT

Further Reductions Available On Request 01276 505012

  • A32 TIG Rods
  • UKCA Approved
  • 2.4mm 5kg
SKU: 3010300328 Categories: ,




A 5KG pack of Weld Star 2.4mm A32 TIG Rods (ER 80S-B2) for low alloy steel such as welding 0.9% Chromium (Cr) and 0.5% Molybdenum (Mo) steels.

Rods are copper coated and heat resistant, containing 1.25% Chromium(Cr), plus 1% Molybdenum (Mo).  The combination of these two chemical elements enhances the toughness and corrosion resistance. This results in effective protection against the effects of hydrogen and sulphur.

The use of manganese and silicon ensures optimum levels of deoxidisation and good weld puddle fluidity.  High levels of heat resistance up to recommended working temperatures of 550°C. Typical uses include applications for industrial machine tools, ocean/marine structures, heat exchangers, boilers, pressure vessels, petrochemical industry and chemical and ammonia synthesis process.  Suitable for all welding positions.

A32 rods provide excellent mechanical properties including tensile strength of 620MPa and yield strength of 510MPa.  As a result of the difference between these two figures, the ductile nature of the wire is increased.  This is exhibited by its ability to endure twisting, misshaping and deforming without affecting the integrity of the finished weld. Moreover, this wire has excellent elongation capabilities, with a breaking point of 24% increase to its original length.

Features & Benefits
  • Suitable for welding in all positions
  • Excellent quality weld deposits and attractive bead appearance.
  • Increased toughness due to the addition of Molybdenum(Mo).
  • Excellent heat resistance up to 550°C
What is the ER 80S-B2 Classification?

This is broken down into the following components: ‘ER’ is the abbreviation electrode or in this case filler wire. This is followed by the number 80 which represents the minimum tensile strength, in this case 80,000 PSI (Pounds per Square Inch). The ‘S’ indicates the wire is solid.  This may sometimes be represented as ‘C’ which advises the welding wire form is a composite.  Finally, the ending letter/number combination (in this case B2) refers to the combination of Chromium (Cr) and Molybdenum (Mo) within the weld material.


Suitable for the following applications and industries:

  • Heat Exchangers
  • Building Cranes and Bridges
  • Petrochemical Industry
  • Marine Engineering and Shipbuilding
  • Gas Pipes
  • Pressure Tanks
  • Construction Steam Boilers
  • Nuclear Power Plant
  • Refineries

The above applications are not an exhaustive list.


Chemical Composition % (Typical)
C% Si% Mn% P% S% Cu%
0.08 0.55 0.60 <0.012 <0.015 <0.25
Cr% Ni% Mo% Al% V% Fx ppm
1.30 <0.20 0.50 <0.020 <0.010 <15


Mechanical Properties (Typical)
Tensile Strength 620 MPa
Yield Strength 510 MPa
Elongation 24%
Impact Strength 100 J
Test Temperature -10ºC

Mechanical properties are approximate and may vary based on the heat, shielding gas, welding parameters and other factors.


EN ISO 21952-B – 1CM
AWS A5.28 – ER 80S-B2



Shielding Gases

EN ISO 14175 – TIG: I1 (Argon)


Welding Positions

EN ISO 6947 – PA, PB, PC, PD, PE, PF


In Conclusion

As shown above Weld Star A32 (ER 80S-B2) is copper coated product suited for joining similar low alloy steels. Noted for it’s exceptional heat resistance up to working temperatures of 550°C.  Due to its tensile strength vs yield strength this wire has excellent ductile properties.  As a result, this allows finished welds to bend and misshape without compromising the quality and integrity of the finished deposit.

Green wire is produced using virgin raw materials sourced from specialised steel mills, which ensures consistent reliability and quality.

Wire images are for illustration only.


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