Weld Star A31 TIG Filler Wire - Heat-Resisting 0.5% Mo - 5kg (ER 80S-D2) - 1.0mm to 3.2mm Dia.
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- Material: Copper-coated heat-resisting wire enriched with 0.5% molybdenum
- Pack Size: 5kg
- Rod Diameter: 1.0mm – 3.2mm
- AWS Code: ER 80S-D2

Weld Star – A31 TIG Wire is a copper-coated, heat-resisting wire enriched with 0.5% molybdenum. Designed for welding carbon and low-alloy steels, this wire ensures high-quality weld deposits and an impeccable bead appearance.
Features and Benefits
- Heat Resistant: Suitable for applications with recommended working temperatures of up to 500°C.
- High-Quality Welds: Provides excellent weld quality and bead appearance on carbon and low-alloy steels.
- Stable Arc: Suitable for operating at high currents, ensuring a stable arc with minimal spatter.
- Versatile Applications: Ideal for use on creep steels in various sectors including steam boilers, pressure tanks, gas pipes, shipbuilding, petrochemicals, heat exchangers, cranes, bridges, and more.
- Quality Production: Manufactured using virgin raw materials from specialized steel mills, guaranteeing consistent quality and reliability.
Common Applications
- Steam Boilers & Pressure Tanks: Ideal for the construction of steam boilers and pressure tanks.
- Petrochemical Industry: Used in the petrochemical sector for various applications.
- Shipbuilding: Suitable for shipbuilding applications.
- Infrastructure: Used in the construction of cranes, bridges, and other infrastructure projects.
Typical Base Materials
P235G1TH, P255G1TH, P310GH, 16Mo3, A255, A350, A612, A210, A333, A316, A369, A106 (Illustrative, not exhaustive list).
| EN ISO636-A – W Z2Mo |
| AWS A5 28 – ER 80S-D2 |
| C% | 0.09 |
| Si% | 0.70 |
| Mn% | 1.90 |
| P% | <0.150 |
| S% | <0.150 |
| Cu% | <0.25 |
| Cr% | <0.15 |
| Ni% | <0.10 |
| Mo% | 0.50 |
| Al% | <0.200 |
| V% | <0.030 |
| Zr+Ti% | <0.50 |
| Tensile Strength | 670 MPa |
| Yield Strength | 550 MPa |
| Elongation | 24% |
| Impact Strength | 70 J |
| Test Temperature | -30°C |
Mechanical properties are approximate and may vary based on the heat, shielding gas, welding parameters and other factors
| EN ISO 14175 – TIG | I1 (Argon) |
| EN ISO 6947 | PA, PB, PC, PD, PE, PF |
Liability: Whilst all reasonable efforts have been made to ensure the accuracy of the information contained, this information is subject to change without notice and can be only considered as suitable for general guidance.
| Brand | Weld Star |
| Weight | 5kg |
| Diameter | 1.0mm · |
| AWS Classification | ER 80S-D2 |
| Material Type | High Strength Steel (ER80S+) |
| TIG Rod Diameter | 1 mm, 1.2 mm, 1.6 mm, 2.4 mm, 3.2 mm |
| TIG Rod Weight | 5 kg |
| SKU | Weight | Diameter | Stock Status | |
|---|---|---|---|---|
| 3010300279 | 5kg | 1 0mm | In Stock | £49.33 ex VAT £59.20 inc VAT |
| 3010300280 | 5kg | 1 2mm | In Stock | £49.33 ex VAT £59.20 inc VAT |
| 3010300281 | 5kg | 1 6mm | In Stock | £49.33 ex VAT £59.20 inc VAT |
| 3010300283 | 5kg | 2 4mm | In Stock | £49.33 ex VAT £59.20 inc VAT |
| 3010300284 | 5kg | 3 2mm | In Stock | £49.33 ex VAT £59.20 inc VAT |
Technical Data Sheet
Download PDFA carriage charge is applied to orders, for standard 1-2 day shipments to mainland destinations within the United Kingdom. Other destinations and premium services are available but subject to additional freight charges.
Weld Star A31 TIG Filler Wire - Heat-Resisting 0.5% Mo - 5kg (ER 80S-D2) - 1.0mm to 3.2mm Dia. Get in touch
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