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  1. KappZapp7 Solid 1/32" x 1 lb spool
    KappZapp7 Solid 1/32" x 1 lb spool
    $115.00
    Super 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
  2. KappZapp7 Solid 1/32" x 1/2 lb spool
    KappZapp7 Solid 1/32" x 1/2 lb spool
    $89.50
    Super 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
  3. KappZapp7 Solid 1/32" x 14 Foot Tube
    KappZapp7 Solid 1/32" x 14 Foot Tube
    $49.50
    Super 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
  4. KappZapp7 Solid 1/16" x 1 lb spool
    KappZapp7 Solid 1/16" x 1 lb spool
    $99.50
    Super 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
  5. KappZapp7 Solid 1/16" x 1/2 lb spool
    KappZapp7 Solid 1/16" x 1/2 lb spool
    $79.50
    Super 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
  6. KappZapp7 Solid 1/16" x 10 Foot Tube
    KappZapp7 Solid 1/16" x 10 Foot Tube
    $39.50
    Super 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
  7. KappZapp7 Solid 1/8" x 1 lb spool
    KappZapp7 Solid 1/8" x 1 lb spool
    $99.50
    Super 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
  8. KappZapp7 Solid 1/8" x 1/2 lb spool
    KappZapp7 Solid 1/8" x 1/2 lb spool
    $79.50
    Super 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

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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 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

Composition

Sn (Tin):

93%

Ag (Silver):

7%

 

Technical Data

Melting Range:

430-570°F (221-299°C)

Tensile Strength (Copper):

15,500 psi

Tensile Strength (Stainless Steel):

31,000 psi

Shear Strength:

14,000 psi

Elongation:

49%

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

 

KappZapp7 Safety Data Sheet

 

CONTACT US

For any questions, please fill out the form below and a Kapp representative will contact you shortly.