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KappZapp7R Rosin Core 1/16" x 1/2 lb spool$79.50Super strength NSF certified 7% Silver Rosin Core solder for Copper, Brass and Stainless. Speaker industry standard for superior strength, conductivity, and vibration resistance. Slushy range (430°F - 570°F / 221°C - 299°C). - Rosin Core Solid .062" (1.6mm) diameter x 1/2 lb spool. VIEW PRODUCT -
KappZapp7R Rosin Core 1/16" x 10 Foot Tube$39.50Super strength NSF certified 7% Silver Rosin Core solder for Copper, Brass and Stainless. Speaker industry standard for superior strength, conductivity, and vibration resistance. Slushy range (430°F - 570°F / 221°C - 299°C). - Rosin Core Solid .062" (1.6mm) diameter x 10 ft in a tube. VIEW PRODUCT -
KappZapp7R Rosin Core 1/16" x 1 lb spool$99.50Super strength NSF certified 7% Silver Rosin Core solder for Copper, Brass and Stainless. Speaker industry standard for superior strength, conductivity, and vibration resistance. Slushy range (430°F - 570°F / 221°C - 299°C). - Rosin Core Solid .062" (1.6mm) diameter x 1 lb spool. VIEW PRODUCT -
KappZapp7R Rosin Core 1mm x 1 lb spool$115.00Super strength NSF certified 7% Silver Rosin Core solder for Copper, Brass and Stainless. Speaker industry standard for superior strength, conductivity, and vibration resistance. Slushy range (430°F - 570°F / 221°C - 299°C). - Rosin Core Solid .039" (1mm) diameter x 1 lb spool. VIEW PRODUCT -
KappZapp7R Rosin Core 1mm x 14 ft Tube$49.50Super strength NSF certified 7% Silver Rosin Core solder for Copper, Brass and Stainless. Speaker industry standard for superior strength, conductivity, and vibration resistance. Slushy range (430°F - 570°F / 221°C - 299°C). - Rosin Core Solid .039" (1mm) diameter x 14 ft in tube. VIEW PRODUCT -
KappZapp7R Rosin Core 1mm x 1/2 lb spool$89.50Super strength NSF certified 7% Silver Rosin Core solder for Copper, Brass and Stainless. Speaker industry standard for superior strength, conductivity, and vibration resistance. Slushy range (430°F - 570°F / 221°C - 299°C). - Rosin Core Solid .039" (1mm) diameter x 1/2 lb spool. VIEW PRODUCT
KappZapp7R™ Tin-Silver solder is the audio industry standard for Lead-Free electrical/electronic Copper applications. The center of the solder contains a natural rosin flux, eliminating the need for externally applied flux to remove the oxide coating and form a strong bond with the metals used. The 7% Silver content makes this solder excellent for applications requiring a higher temperature range and/or higher Silver content for superior strength, pressure, tolerance, and vibration resistance. KappZapp7R™ creates extremely clean conductive joints that offer higher strength, ductility, and corrosion resistance. It is NSF Certified Lead-free.
NSF International certifies that this product complies with NSF/ANSI Standard 372: Drinking Water System Components – Lead Content. Product also Certified to NSF/ANSI 61, Annex G and conforms with Lead content requirements for “Lead-free” plumbing as defined by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking Water Act in effect as of January 4, 2014. Weighted average lead content < 0.25%; Solder and flux lead content < 0.20%. This alloy complies with the European RoHS and REACH directives. No lead, cadmium or mercury used in production.
Applications
- Electrical/electronic Copper to Copper applications
- Car and home audio and home theater applications
- Preferred choice when higher strength, vibration resistance, and conductivity are required
- Paired with Kapp CopperBond™ Flux when additional flux is necessary.
Properties
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Composition |
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Sn (Tin): |
93% |
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Ag (Silver): |
7% |
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Technical Data |
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Melting Range: |
430-570°F (221-299°C) |
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Tensile Strength (Copper): |
15,500 psi |
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Tensile Strength (Stainless): |
31,000 psi |
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Shear Strength: |
14,000 psi |
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Elongation: |
49% |
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Electrical Conductivity: |
20.1% |
Product Variants
KappZapp7R™ is available in standard forms:
- 1/32” (0.031”) (0.8mm)
- 1/16” (0.063”) (1.6mm)
- 1/8” (0.125”) (3.2mm)
Custom alloys and forms are our specialty. Call Kapp Alloy to discuss what size and diameter are right for you.
Matching Kapp CopperBond™ Flux
For most alloys and projects, no additional flux is required when working with KappZapp7R™ rosin-cored solder. Some highly polished Stainless Steel alloys contain more Chromium and Nickel. These parts may require extra effort to remove the oxide layer by sanding, scratching with a Stainless Steel brush or emory paper, and by the addition of Kapp CopperBond™ Flux.
KappZapp7R™ Technical Data Sheet