Kapp #7™
THE Solder for Cast Iron & Galvanizing
Kapp #7 can be used to build up, fill or seal cast iron, malleable
iron, copper, steel and nickel alloys. It can be used in the repair of
Kirksite and galvanized surfaces; also for sealing water jackets,
compressor housings, gear boxes, liners, cast iron radiators, and for
tinning surfaces as a base for Babbitt Metal.
 |
Physical Properties &
Technical Data |
 |
|
Composition |
30%Sn -
20%Zn - 50%Pb |
|
Liquidus |
600°F /
315°C |
|
Solidus |
350°F /
232°C |
|
Tensile Strength |
Hydraulic
Pressure Up to 900 psi |
|
Sizes |
1/4" x
14" square rod
1/8" x 18" round rod
Spooled wire continuous lengths |
|
Standard Packaging |
50 lb bulk
cartons |
|
*Note: Tensile strengths depend on base
metals, soldering methods and type of joint. |
Procedure
The joint area must be cleaned and ground, filed or chipped, to improve
strength where vibration is expected. Heat the surface to be tinned, NOT
the wire directly. Tin the area thoroughly by rubbing the rod on the
surface, allowing conducted heat to melt the alloy and then add additional
rod for filling.
When necessary, flux should be applied to ensure bond. Depending on the
application, Kapp Golden Flux for aluminum soldering or Kapp Comet Flux
may be used for metals except aluminum. Some applications do not require
flux.
NOTE: No specific soldering guidelines apply to all
applications for this solder... We suggest you call Jack Crawford at Kapp
Engineering assistance to discuss your specific needs. Kapp Alloy & Wire,
Inc. is happy to provide samples for testing. |
