The Matweld Silver Solder Flux-Coated 1.5mm (M018) rods are premium silver brazing alloys designed for high-strength, leak-proof joining of nearly all engineering metals, including copper, brass, and stainless steel. These rods are the industry standard for precision work in the refrigeration, air conditioning, and hydraulic sectors.
Key Performance Features
- Integrated Flux Coating: The rods come pre-coated with a specialized flux, ensuring the joint is cleaned and "wetted" during the heating process. This eliminates the need for separate powders or pastes.
- High Silver Content: Typically containing 30% silver, these rods offer a lower melting point and superior capillary action compared to standard brazing rods, allowing the alloy to flow deep into tight-fitting joints.
- Strong, Ductile Joints: Unlike standard welding, silver soldering (brazing) creates a bond that is both exceptionally strong and flexible enough to withstand the vibration and thermal expansion typical of HVAC and plumbing systems.
- Low Working Temperature: Designed to melt between 650°C and 700°C, which reduces the risk of warping or overheating the base metals.
Technical Specifications
- Product Code: M018 / MAN0400
- Diameter: 1.5mm
- Length: ~537mm (approx. 54cm)
- Working Temperature: 650°C – 700°C
- Quantity: Typically sold in a 2-piece prepac sleeve.
- Weight (Pack): ~0.06kg
Pro Tips for Success
- Cleanliness is Crucial: Even with the flux coating, your joint should be mechanically cleaned with an MTS Wire Brush or emery cloth to remove heavy oxidation before starting.
- Heat the Work, Not the Rod: Use an oxy-acetylene or MAPP gas torch to heat the base metals until they are hot enough to melt the silver solder on contact. Do not place the rod directly in the flame, as this can burn off the flux before the metal is ready.
- Capillary Action: Once the metal reaches the correct temperature, the silver solder will "suck" into the joint. Ensure the gap between parts is small (0.05mm to 0.15mm) for the strongest bond.
- Post-Weld Cleanup: After the joint has cooled, use warm water and a brush to remove any hardened flux residue, which can be mildly corrosive over long periods if left on the metal.
