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  1. KappZapp3.5R Rosin Core 1/16" x 10 Foot Tube
    KappZapp3.5R Rosin Core 1/16" x 10 Foot Tube
    $24.50
    High strength low temp NSF certified (430°F / 221°C) 3.5% Silver solder for Copper, Brass and Stainless electrical/electronic connections - Rosin Core 1/16" (1.6mm) diameter x 10 ft in tube. VIEW PRODUCT
  2. KappZapp3.5R Rosin Core 1/32" x 14 Foot Tube
    KappZapp3.5R Rosin Core 1/32" x 14 Foot Tube
    $29.50
    High strength low temp NSF certified (430°F / 221°C) 3.5% Silver solder for Copper, Brass and Stainless electrical/electronic connections - Rosin Core 1/32" (0.8mm) diameter x 14 ft in tube. VIEW PRODUCT
  3. KappZapp3.5R Rosin Core 1/8" x 1/2 lb spool
    KappZapp3.5R Rosin Core 1/8" x 1/2 lb spool
    $39.50
    High strength low temp NSF certified (430°F / 221°C) 3.5% Silver solder for Copper, Brass and Stainless electrical/electronic connections - Rosin Core 1/8" (3.2mm) diameter x 1/2 lb spool. VIEW PRODUCT
  4. KappZapp3.5R Rosin Core 1/16" x 1/2 lb spool
    KappZapp3.5R Rosin Core 1/16" x 1/2 lb spool
    $39.50
    High strength low temp NSF certified (430°F / 221°C) 3.5% Silver solder for Copper, Brass and Stainless electrical/electronic connections - Rosin Core 1/16" (1.6mm) diameter x 1/2 lb spool. VIEW PRODUCT
  5. KappZapp3.5R Rosin Core 1/32" x 1/2 lb spool
    KappZapp3.5R Rosin Core 1/32" x 1/2 lb spool
    $49.50
    High strength low temp NSF certified (430°F / 221°C) 3.5% Silver solder for Copper, Brass and Stainless electrical/electronic connections - Rosin Core 1/32" (0.8mm) diameter x 1/2 lb spool. VIEW PRODUCT
  6. KappZapp3.5R Rosin Core 1/8" x 1 lb spool
    KappZapp3.5R Rosin Core 1/8" x 1 lb spool
    $59.50
    High strength low temp NSF certified (430°F / 221°C) 3.5% Silver solder for Copper, Brass and Stainless electrical/electronic connections - Rosin Core 1/8" (3.2mm) diameter x 1 lb spool. VIEW PRODUCT
  7. KappZapp3.5R Rosin Core 1/16" x 1 lb spool
    KappZapp3.5R Rosin Core 1/16" x 1 lb spool
    $59.50
    High strength low temp NSF certified (430°F / 221°C) 3.5% Silver solder for Copper, Brass and Stainless electrical/electronic connections - Rosin Core 1/16" (1.6mm) diameter x 1 lb spool. VIEW PRODUCT
  8. KappZapp3.5R Rosin Core 1/32" x 1 lb spool
    KappZapp3.5R Rosin Core 1/32" x 1 lb spool
    $69.50
    High strength low temp NSF certified (430°F / 221°C) 3.5% Silver solder for Copper, Brass and Stainless electrical/electronic connections - Rosin Core 1/32" (0.8mm) diameter x 1 lb spool. VIEW PRODUCT

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KappZapp3.5R™ Tin-Silver rosin-core solder is a convenient NSF Certified Lead-Free one-step solder that produces strong and ductile joints for all electrical/electronic Copper and Stainless Steel applications. The center of the solder contains a natural rosin flux which is released when the solder is heated, eliminating the need for additional flux. Flux residue is easily removed with rag wet with warm water or alcohol, or by flushing with warm water. The resulting joints have high tolerance to vibration and stress, with tensile strengths to 14,000 psi on Copper and 25,000 psi on Stainless Steel.

 

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

  • Copper wires to Copper, Brass, and/or Stainless Steel tabs
  • Sensitive circuit boards
  • Thin Copper or Stainless Steel wires
  • Instruments
  • Paired with Kapp Comet™ Flux when additional flux is necessary

Properties

Composition

Sn (Tin):

96.5%

Ag (Silver):

3.5%

 

Technical Data

Melting Range:

Eutectic @ 430°F (221°C)

Tensile Strength (Copper):

14,000 psi

Tensile Strength (Stainless Steel):

25,000 psi

Shear Strength:

11,600 psi

Elongation:

48%

Electrical Conductivity:

16.4%

Sn=Tin, Ag=Silver

 

Product Variants

KappZapp3.5R™ 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 Kapp Comet™ Flux

For most alloys and projects, no additional flux is required when working with KappZapp3.5R™ 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 liquid Comet™ Flux.

 

Click here for KappZapp3.5R™ Technical Data Sheet

 

Click here for KappZapp3.5R™ Safety Data Sheet

 

Click here for instructions on how to solder with KappZapp3.5R™

 

Let Us Help You Find your Tailored Solution. Act Now & Request A Quote.

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