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SIF SIFMIG 985 Copper MIG Brazing Wire - CuSn1 - 0.8/1.0/1.2mm Dia. (4kg & 12.5kg Spools)

WO981240 Weldability Sif In Stock Fast Dispatch
Price per unit
£106.03 ex VAT
£127.24 inc VAT
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  • CuSn1 copper MIG wire containing minimum 98.5% copper
  • Available in multiple diameters on 4kg and 12.5kg spools
  • Tensile strength 220 N/mm², hardness 70 BHN, melting point 1025°C
  • Requires argon shielding gas and DC+ current
  • Suitable for oxygen-bearing copper joints and fabrication work
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SIFMIG 985 is a CuSn1 copper MIG wire (98.5% copper) for welding oxygen-bearing copper joints and copper materials, supplied in 0.8–1.2mm diameters on 4kg and 12.5kg spools.

SIFMIG 985 is a high-quality copper MIG wire containing a minimum of 98.5% copper with deoxidising elements, providing excellent resistance to high temperatures and corrosion.

It is designed for MIG welding of copper and is especially suitable for joint welding of oxygen-bearing copper materials.

When welding thicknesses above 6mm, preheating to 600°C is recommended along with controlled cooling to reduce the risk of cracking.

The wire produces weld metal with a tensile strength of 220 N/mm², hardness of 70 BHN, and melting point of 1025°C.

It operates on DC+ with argon shielding gas and is available in 0.8mm, 1.0mm and 1.2mm diameters on 4kg and 12.5kg spools for fabrication, repair and maintenance work.


Wire Diameter 0.8mm | 1.0mm | 1.2mm
Spool Size 4kg | 12.5kg
Material Copper MIG Wire (CuSn1, ≥98.5% Copper)
Welding Positions All Positions
Shielding Gas Argon
Current DC+

Applications

  • MIG Welding of Copper
  • Oxygen-Bearing Copper Joints
  • Fabrication & Repair
Tin (Sn) 0.85%
Manganese (Mn) 0.25%
Silicon (Si) 0.2%
Phosphorus (P) 0.01%
Copper (Cu) Balance
Tensile Strength (UTS) 220 N/mm²
Hardness 70 BHN
Melting Point 1025°C
Standards EN ISO 24373 Cu 1898 (CuSn1) | BS 2901 C7
Brand Weldability Sif
shopping_price_ranges 500 - 1000
Material Type Brazing (ERCu)
AWS Classification CuSn1
Spool Size Small (2-7kg), Standard (12.5-25kg)
Diameter 1.2mm ·
Weight 4kg ·
SKU Diameter Weight Stock Status  
WO980812 0 8mm 12 5kg In Stock £294.30 ex VAT £353.16 inc VAT
WO980840 0 8mm 4kg Out of Stock £73.58 ex VAT £88.30 inc VAT
WO981012 1 0mm 12 5kg In Stock £210.00 ex VAT £252.00 inc VAT
WO981212 1 2mm 12 5kg Out of Stock £206.95 ex VAT £248.34 inc VAT
WO981240 1 2mm 4kg In Stock £106.03 ex VAT £127.24 inc VAT
WO981040 1 0mm 4kg In Stock £122.30 ex VAT £146.76 inc VAT

Product Information

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Technical Data Sheet

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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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SIF SIFMIG 985 Copper MIG Brazing Wire - CuSn1 - 0.8/1.0/1.2mm Dia. (4kg & 12.5kg Spools) SIF SIFMIG 985 Copper MIG Brazing Wire - CuSn1 - 0.8/1.0/1.2mm Dia. (4kg & 12.5kg Spools)
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