How to Braze Metal with a Torch

Braze Metal Together

WK5500OX-Cutting, Welding, and Brazing Torch Kit

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Brazing is the process of joining two independent pieces of metal to form one strong load-bearing joint.

  • Brazing is similar to soldering, but at higher temperatures.
  • Use the right brazing rod material for the metal used in your project:
Metal Type Recommended Rod
Copper, brass, bronze Bernzomatic PC3 Copper Phosphorous Brazing & Welding Rods
Steel, stainless steel, nickel alloys, copper alloys, cast iron, tungsten carbide Bernzomatic NS3 Nickel Silver Brazing & Welding Rods
Cast iron, galvanized, nickel, steel, malleable iron Bernzomatic WB5 Bronze Brazing & Welding Rods
Aluminum Bernzomatic AL3 Aluminum Brazing & Welding Rods
  • The brazing rod should be melted by the heat of the metal pieces being joined, not by direct contact with the flame of the torch.
  • Use a torch that produces a high intensity flame.

TIPS

  • Read our General Safety Precautions in the Information Center before starting your project.
  • Read the instructions that come with your torch and braze before beginning your project.
  • Always remove torch from fuel cylinder and store fuel in an upright position after completing your project.

WHAT YOU'LL NEED

CATEGORY: Construction

Tools

  • WK5500OX-Cutting, Welding, and Brazing Torch Kit
  • ANSI-compliant safety glasses
  • Clamps
  • Keep a fire extinguisher or water source nearby in case of emergency.
  • Safety mask or respirator
  • Wire brush or emery cloth
  • Work gloves

Materials

  • Brazing alloy rods
  • Metals to be joined
  • Soapy water or degreaser
  1. Step 1Use the wire brush or emery cloth to scuff the surface of the metal. Then clean the surfaces using soapy water or a degreaser.
  2. Step 2Position the metal as desired. In most cases, an overlapped joint will be stronger and braze together easier than a gapped joint. If needed, use clamps to secure the pieces in position.
  3. Step 3Heat the joint where the two pieces of metal will meet until the joint glows.
  4. Step 4Apply the brazing rod to the joint while continuing to heat the metal surfaces. For large areas, heat portions of the joint to temperature and then move to the next adjacent area.
  5. Step 5After brazing, use a wire brush to clean the brazed surface to remove any oxidation or residue.