4 SOLDERS EVERY WELDING GAS SUPPLIER NEEDS
#1 Kapp GalvRepair
This Tin-Zinc-Lead repair solder is the standard for galvanized surface repair, exceeding ASTM performance standard A780.
- Excellent cathodic and barrier protection, far superior to Zinc paints and alternative barrier coatings
- Easy application at low temperatures with any heat source with a broad slushy range of 450-600°F (232-315°C)
- Cost-effective repair for Galvanized coating defects

#2 Lead Free Galvanite
This Tin-Zinc-Copper repair solder is the a lead-free reformulation of our repair solder for galvanized steel that exceeds performance standards as specified by ASTM standard A780.
- The same excellent cathodic and barrier protection as Kapp GalvRepair, but lead free!
- Easy application at low temperatures with any heat source.) Melting range 390-570°F (200-300°C).
- None of the environmental/health concerns of lead
#3 Kapplead Roofing & Sheet Metal Solders
These high purity Tin-Lead solders that quickly provide cost effective joints on most roofing
and sheet metal applications.
- Outstanding flow & consistency that result in fewer failed parts and stronger, more ductile joints.
- Outstanding flow & consistency that result in fewer failed parts and stronger, more ductile joints.
- Lead in our formulations is 99.99% pure; perfect for seam soldering of roof installations & hand soldering
- Matching fluxes: Kapp's Golden Flux for aluminum & Comet Flux for alloys other than aluminum
Looking for lead free? See KappFree for other alterative KappZapp products!
Composition | Melting Range |
63% Tin, 37% Lead | Eutectic @ 361°F (183°C) |
60% Tin, 40% Lead | 361-370°F (183-191°C) |
50% Tin, 50% Lead | 361-421°F (183-191°C) |
40% Tin, 60% Lead | 361-460°F (183-238°C) |
#4 KappFree for Plumbing
This Tin-Copper-Silver solder is a lead-free, cadmium free formulation designed to replace lead solders in stainless steel, copper, & brass plumbing.
- ASTM & NSF Food Grade & Potable Water Standards Compliant
- Superior strength & corrosion resistance when compared to lead solders
- Easy application at low temperatures with any heat source. Melting range 440-500°F (226-260°C)
- Matching flux: Kapp Comet Flux for all metals except Aluminum and Magnesium
Looking for something stronger for high pressure,
cyclical heat exchangers, or HVAC systems? See
KappZapp on our website or call us for more information.