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KappZapp7 Solid 1/8" x 1/2 lb spool$79.50Super strength NSF certified 7% Silver 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). - Solid .125" (3.2mm) diameter x 1/2 lb spool. VIEW PRODUCT -
KappZapp7 Solid 1/32" x 14 Foot Tube$49.50Super strength NSF certified 7% Silver 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). - Solid 1/32" (0.8mm) diameter x 14 ft in tube. VIEW PRODUCT -
KappZapp7 Solid 1/8" x 1 lb spool$99.50Super strength NSF certified 7% Silver 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). - Solid .125" (3.2mm) diameter x 1 lb spool. VIEW PRODUCT -
KappZapp7 Solid 1/32" x 1 lb spool$115.00Super strength NSF certified 7% Silver 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). - Solid 1/32" (0.8mm) diameter x 1 lb spool. VIEW PRODUCT -
KappZapp7 Solid 1/32" x 1/2 lb spool$89.50Super strength NSF certified 7% Silver 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). - Solid 1/32" (0.8mm) diameter x 1/2 lb spool. VIEW PRODUCT -
KappZapp7 Solid 1/16" x 10 Foot Tube$39.50Super strength NSF certified 7% Silver 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). - Solid .062" (1.6mm) diameter x 10 ft in tube. VIEW PRODUCT -
KappZapp7 Solid 1/16" x 1 lb spool$99.50Super strength NSF certified 7% Silver 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). - Solid .062" (1.6mm) diameter x 1 lb spool. VIEW PRODUCT -
KappZapp7 Solid 1/16" x 1/2 lb spool$79.50Super strength NSF certified 7% Silver 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). - Solid .062" (1.6mm) diameter x 1/2 lb spool. VIEW PRODUCT
93Sn/7Ag Lead-Free Solder
KappZapp7™ Tin-Silver solder is an audio industry standard for vehicle and home theater speaker installations. Its 7% Silver content requires a higher soldering temperature, but offers superior strength, conductivity, and vibration resistance over both KappZapp3.5™ and KappZapp4™. KappZapp7™ is NSF Certified Lead-free.
NSF Certified
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
- Car audio and home theater installations
- Highest Strength and Vibration Resistance Stainless Steel to Copper solder available
- Preferred choice when higher strength and conductivity are required
- Paired with Kapp CopperBond™ Flux
- Also available in a convenient one-step KappZapp7R™ Rosin Core solder
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 Steel): |
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
KappZapp7™ 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 a Kapp representative to discuss what size and diameter are right for you.
Matching Flux
KappZapp7 Technical Data Sheet