Brazing

Brazing is a metal-joining process that uses a filler metal to bond two or more metals together at high temperatures without melting the base materials, creating strong and durable joints.

What is brazing?

Brazing is a process where two metals are joined by heating a filler metal above 450°C (840°F) but below the melting point of the base metals. The molten filler flows into the joint, creating a strong, sealed bond without melting the base materials.

Recommended Products

These are the recommended torches for brazing

History of brazing

Brazing has been used for over 3,000 years, dating back to ancient civilizations that joined metals for tools, weapons, and jewellery. It's essential for HVAC, plumbing and metal fabrication.

How does it work?

Brazing relies on heat, capillary action, and filler metal to create strong joints. First, the metal surfaces are cleaned and coated with flux to prevent oxidation. The propane torch evenly heats the joint, raising the temperature above 450°C (840°F). Once hot enough, the brazing rod melts and flows into the gap between the metals, forming a durable bond. As the joint cools, the filler metal solidifies, creating a leak-proof and structurally sound connection. 

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An icon representing each application appears on all of the packaging, brochures and product information, this helps you to identify the right product for your need.

Frequently asked questions

Yes! A propane torch is effective for brazing copper, brass, and some steels, especially in plumbing, HVAC, and metal repairs. For higher-temperature alloys, a propane-oxygen or MAP gas torch may be required.

  • Brazing: Uses higher temperatures (above 450 °C / 840°F) for stronger joints.
  • Soldering: Uses lower temperatures (below 450 °C / 840°F) for electrical and plumbing connections.
  • Silver-based alloys – Great for plumbing, HVAC, and metal joining. 

  • Brass or bronze alloys – Used for strong, structural connections. 

Yes! Flux prevents oxidation and ensures a clean, strong bond. Some brazing rods come pre-coated with flux.

  • Use a torch with a cyclone burner for even heat distribution around the joints
  • Avoid direct flame on the filler—heat the base metals so the filler melts by contact.
  • Aluminium – Requires special aluminum brazing rods and flux.
  • Stainless steel – Possible with silver-based brazing alloys and proper heat control.

Brazing creates strong, sealed joints but is not as strong as welding for load-bearing structures. However, it’s preferred when precision and low heat input are needed.

  • Work in a well-ventilated area to avoid fumes. 

  • Wear heat-resistant gloves and safety glasses. 

  • Keep the torch away from flammable materials. 

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