Alumite™ is the original high temperature fluxless soldering and brazing rod for the fabrication, maintenance, and repair of casted Aluminum alloys, Zinc alloys, Zamak alloys, Pot Metal, and White Metal. Alumite™ has been used and endorsed by leading cast Aluminum, Diecast, and White Metal manufacturers for over 75 years.
- Alumite Rods by the pound$20.00
Very high strength, high temperature (715-735°F / 379-391°C) solder for casted Aluminum, Zamak, Diecast and White metals - Solid rods sold by pound (~18 rods). Caution! Soldering aluminum requires a compatible aluminum flux. Kapp Lunar Flux is designed to work with alumite solder in high temperature aluminum soldering.VIEW PRODUCT
- Alumite Hobby Kit$29.50
Very high strength, high temperature (715-735°F / 379-391°C) solder for casted Aluminum, Zamak, Diecast and White metals - Solid 10 rods + stainless Steel brush + instructions + 3 oz. Lunar Flux.VIEW PRODUCT
- Alumite Craftsman Kit$39.50
Very high strength, high temperature (715-735°F / 379-391°C) solder for casted Aluminum, Zamak, Diecast and White metals - Solid 20 rods + stainless Steel brush + instructions + 3 oz. Lunar Flux.VIEW PRODUCT
- Alumite ShopMaster Kit$49.50
Very high strength, high temperature (715-735°F / 379-391°C) solder for casted Aluminum, Zamak, Diecast and White metals - Solid 30 rods + stainless Steel brush + instructions + 3 oz. Lunar Flux.VIEW PRODUCT
Benefits & Features
Actual cast Aluminum solder applications result in joints that are permanent, non-corrosive and, in many cases, stronger than the parent metal
Hard solder with a higher melting point (715-735°F / 379-391°C)
Requires more heat than KappAloy™ solders, but will produce a stronger bond between the parts
- Repair and rebuild cast Aluminum and Diecast parts
- Works well on casted parts made from Zamak alloys, White Metal, and Pot Metal
- Used to repair pitting on classic car casted automotive trim before Copper and Chrome plating
- Joining Aluminum to Stainless Steel
- Can be used as a general purpose high strength solder
- Used when parts are thicker and the joint needs to support greater weight or pressure
- Paired with Kapp LunarTM Flux
Alumite™ solder repairs Aluminum boats, engine heads, motor housings, power mowers, farm and dairy equipment, blocks and crankcases, vacuum cleaners, carburetors, gears and pumps, jigs and fixtures, dies and match plates, trophies and ornaments, models and patterns, antique car parts, windows and doors, and Aluminum boat propellers.
TIP: If high strength is not required, (EX: decorative applications) it may be best to avoid additional heat. This is especially true for thin or sheet parts, as the different metals will deform when heated unevenly. When high strength is not required, consider KappAloy15™.
- Melting Range: 715-735°F (379-391°C)
- Tensile Strength: 39,000 psi
- Compression Strength: 60,000-75,000 psi
- Shear Strength: 34,000 psi
- Impact Strength (Charpy): 4 ft.lbs. to break 1/4" bar
- Hardness (Brinell-500 kg. load): 100
- Ductility: Good
- Density: .25lbs./cu. in.
- Elongation: 3% in 2 inches
- Linear Expansion Coefficient: 15.4 x 106 / °F
- Electrical Conductivity: 24.9 (%IACS)
- Thermal Conductivity: .24 cal / cm3 / °C
- Corrosion Penetration: 300 x 106 in 1 1 / R
- Flux: None on Accessible Joints, Kapp Lunar™ Flux where needed
- MIL Specifications: Meets MIL-R4208
*Note: Shear strengths based on double lap joints, Tensile strengths depend on base metals, soldering methods and type of joint.
- 1/8" (.125") 3.2mm
- 3/16" (.187") 4.75mm
- 1/4" (.250") 6.35mm
- Custom alloys and forms are our specialty. Call a Kapp representative to discuss what size and diameter are right for you.
Match with Kapp Lunar™ Flux
Kapp Lunar™ Flux has been designed specifically for soldering casted Aluminum, Diecast, Zamak, White Metal, and Pot Metal using Alumite™ solder. Residue is electrically conductive and slightly corrosive. Any flux residue should be removed with warm water or alcohol and a clean rag. Lunar™ flux will char at temperatures above 800°F. DO NOT OVERHEAT FLUX.