Heat Exchange

Radiator Solder for Assembly and Repair

copper brass 4 row radiator coreRadiator solder is used to repair and seal automotive or industrial radiators, especially those made of brass, copper. The solder must offer good flow, adhesion to metals, and corrosion resistance, and it should withstand the pressure and temperature fluctuations of a working cooling system.  Common uses for radiator solder include repairing leaks and cracks in copper/brass radiator cores or tanks, reinforcing joints to seal seams between metal components such as tanks, headers, and core tubes, resoldering fittings or mounts and restoring vintage radiators in classic cars.   

Common Alloys for Heat Exchange Applications:

Below is a list of the solder alloys typically used for radiator applications. The most common alloys are 40Sn/60Pb, 50Sn/50Pb and 60/Sn/40Pb.

  • 15SN/85PB
  • 20SN/80PB
  • 25SN/75PB
  • 30SN/70PB
  • 35SN/95PB
  • 40SN/60PB
  • 50SN/50PB
  • 60SN/40PB
  • 97SN/3CU

Mayer Alloys supplies the heat exchange industry with materials to repair and assemble radiators, heater cores, coolers and gas tanks. We offer tin-lead and lead free alloys. All material is materials are available in ingot, bar or wire forms.  We can also help you with your tin-lead solder scrap reclamation needs.

For more information, FREE Technical Assistance and to Purchase material, please contact us at 844-564-6087 or email sales@mayeralloys.com or fill out the form in the link below.

How can we help you? Request a quote here.
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