Other Nonferrous Metal Balls

Nonferrous metal balls such as copper, aluminum, brass, titan balls are used at many places in our daily life without our knowing it. For example, copper alloy balls (JIS H 3260) are used for light bulbs, and plated copper or brass balls are used for the breaker points of electric circuit boards. Aluminum balls are used for the electric breaker point of the airbag system of automobiles because of its characteristics.
As is the word "Producing infinite possibilities from a single sphere", balls of various materials are hard at work all around you.

Copper Balls


Characteristics of copper balls

  • Copper has outstanding electric conductivity and also has excellent thermal conductivity.

Brass Balls


Characteristics of brass balls

  • Brass is the alloyed metal of copper and zinc. It is harder than the original metal and has less stretch and high tensile strength.

Aluminum Balls


Characteristics of aluminum balls

  • The gravity of aluminum is about 2.69 and is the lightest of all metals.
  • The thermal conductivity of aluminum is three times that of iron.
  • Aluminum is neither magnetized nor affected by the magnetic field.

Titanium Balls


Characteristics of titanium balls

  • The gravity of titanium is 4.51 and about 60% of the steel. It is a light metal.
  • Titanium has strong intensity. Especially, titanium alloy has the highest class of specific tensile strength among all the practical metals.
  • Titanium has better corrosion resistance than stainless and copper alloy.
  • Titanium and titanium alloy nonmagnetic metals.

Nonferrous Metal Comparison Table

Table:Characteristics of Nonferrous Metals (Generic Data)
Item, Type Nonferrous Metal  Metal
Copper Brass Aluminum Titanium Pure Iron
Density (g/cmm3) 8.93 8.43 2.69 4.51 7.68
Coefficient of thermal expansion (10-6/°C) 16 18 24 8.4 11
Coefficient of thermal conductivity (cal/cm2/sec/°C/cm) 0.923   0.487 0.041 0.145
Specific heat (kcal/kg°C) 0.09   0.21 0.124 0.11
Elastic coefficient (x103/cm2) 1300 1026 700 1157 2100
Tensile Strength (kg/cm2) 2740 8050 1100   2260
Melting point (°C) 1083   653 1668 1535

※ All nonferrous balls are available upon request (BTO). Please ask us for more details.
※ Plating, boring and other process can be done to the balls upon request.