Description
Compatible Base Materials
SifSilcopper No. 985 is a specialized TIG filler rod designed for joining copper and copper alloys, making it ideal for applications such as:
- Copper Materials: Pure copper, deoxidized copper, and copper alloys
- Copper to Brass Joining: Excellent for joining dissimilar copper alloys
- Plumbing Systems: Water pipes, fittings, and sanitary installations
- Refrigeration & HVAC: Copper tubing, heat exchangers, and refrigeration lines
- Electrical Applications: Bus bars, electrical connections, and power distribution components
- Industrial Equipment: Heat exchangers, process equipment, and copper vessels
Standards & Specifications
- EN ISO 24373: S Cu 5480 (CuP6Ag2)
- AWS A5.8: RBCuP-6
Typical Mechanical Properties
- Tensile Strength: 250-350 MPa
- Shear Strength: 200-250 MPa
- Working Temperature: 700-800°C
- Electrical Conductivity: >80% IACS
Key Features & Benefits
✅ Self-Fluxing Properties: Phosphorus content acts as a built-in flux on copper, eliminating the need for separate flux
✅ Silver Content: Enhances flow characteristics and increases joint strength
✅ Excellent Capillary Action: Superior flow into tight joints for leak-proof connections
✅ Low Temperature Flowability: Melts and flows at lower temperatures than standard copper fillers
✅ High Electrical Conductivity: Maintains excellent electrical properties in the completed joint
Recommended Shielding Gases
- TIG Welding: EN ISO 14175 – I1 (Pure Argon)
- For Enhanced Protection:
- Flow Rate: 8-12 l/min recommended for optimal coverage
- Cup Size: #6-8 for most applications
Please note the rod length in the description above.
Arc Electrode rods (rough finish coating) are 300mm in length.
Tig filler rods (non arc) are sold in two formats;
- Packs of (x10, x20, x30, x40, x50, x100) are cut down from trade 1m lengths to 333mm. This is to reduce postage costs.
- 1kg, 2.5kg, 5kg are 1m, 1000mm original length.
Our prices include free shipping to the standard Royal Mail boundary postcodes (includes IOM, highlands, remote islands)!
Sorry we can’t afford the same to those outside this region.
