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Weld Star A33 TIG Filler Wire - 2.25% Cr / 1% Mo - 5kg (ER 90S-B3) - 1.6mm to 3.2mm Dia.

3010300367 Weld Star In Stock Fast Dispatch
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£49.33 ex VAT
£59.20 inc VAT
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  • Material: Low alloy, copper-coated wire with 2.25% Chromium (Cr) and 1% Molybdenum (Mo) content
  • Pack Size: 5 Kg
  • Rod Diameter: 1.6mm – 3.2mm
  • AWS Code: ER 90S-B3
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Weld Star – A33 (ER 90S-B3) TIG Wire is a low alloy, copper-coated wire designed with 2.25% Chromium (Cr) and 1% Molybdenum (Mo) content. This wire is specifically formulated for welding heat-resistant steels and offers both high strength and corrosion resistance, especially in environments with elevated temperatures.

Features and Benefits

  • Heat Resistant: Designed for welding heat-resistant steels, making it ideal for high-temperature applications up to 600°C.
  • High-Quality Welds: Produces high-quality welds suitable for pressure piping or boiler work.
  • Corrosion Resistant: Offers high resistance to corrosion, particularly in challenging environments.
  • Quality Production: Made with virgin raw materials sourced from specialized steel mills, ensuring consistent quality and reliability.

Common Applications

  • Power Plants: Used in pressure piping in steam power generating plants.
  • Boilers and Heat Exchangers: Ideal for welding boiler and heat exchanger tubes.
  • Chemical and Petrochemical Industries: Suitable for applications in the chemical and petrochemical sectors where high-temperature resistance is required.

Typical Base Materials

10CrMo9-10, GS 17CrMoV5 11, 10CrSiMoV7, 12CrSiMo8, GS12CrMo9 10, 10CrSiMoV7, 10Cr V63, 12CrSiMo8 (Illustrative, not exhaustive list).

Shielding Gases

EN ISO 14175 – TIG: I1 (Argon)

Welding Positions

EN ISO 6947 – PA, PB, PC, PD, PE, PF


EN ISO21952-B – 2C1M
AWS A5 28 – ER 90S-B3
C% Si% Mn% P% S% Cu%
0.08 0.50 0.60 <0.012 <0.015 <0.25
Cr% Ni% Mo% Al% V% Fx ppm
2.40 <0.20 1.00 <0.020 <0.010 <15
Tensile Strength 640 MPa
Yield Strength 540 MPa
Elongation 22%
Impact Strength 90 J
Test Temperature -10 °C

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

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.

Weight 5kg
Diameter 1.6mm ·
Brand Weld Star
Material Type High Strength Steel (ER80S+)
TIG Rod Diameter 1.6 mm, 2.4 mm, 3.2 mm
TIG Rod Weight 5 kg
AWS Classification ER 90S-B3
SKU Weight Diameter Stock Status  
3010300367 5kg 1 6mm In Stock £49.33 ex VAT £59.20 inc VAT
3010300369 5kg 2 4mm In Stock £49.33 ex VAT £59.20 inc VAT
3010300370 5kg 3 2mm In Stock £49.33 ex VAT £59.20 inc VAT

Datasheet

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A 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.

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Weld Star A33 TIG Filler Wire - 2.25% Cr / 1% Mo - 5kg (ER 90S-B3) - 1.6mm to 3.2mm Dia. Weld Star A33 TIG Filler Wire - 2.25% Cr / 1% Mo - 5kg (ER 90S-B3) - 1.6mm to 3.2mm Dia.
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