Nonferrous metal balls such as copper, aluminum, brass and titanium 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 seat belt component, and also the electric breaker point of the airbag system for automobiles because of its characteristics.
Titanium balls are "no contamination".
So it use for semiconductor manufacturing industry.
As is the word "Producing infinite possibilities from a single sphere", balls of various materials are hard at work all around you. |
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Copper Balls |
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◆Characteristics of copper balls
- Copper has outstanding electric conductivity and also has excellent thermal conductivity.
- Recently, the amount of semiconductor products installed in the automobile industry has increased, and the demand for copper balls is increasing.
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Brass Balls |
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◆Characteristics of brass balls
- Brass is the alloyed metal of copper and zinc.
- Has higher conductivity than the otherl metal.
- Therefore, it is often used as an electrical component.
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Aluminum Balls |
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◆Characteristics of aluminum balls
- The density 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.
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Titanium Balls |
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◆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 are "nonmagnetic metals".
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Nonferrous Metal Comparison Table |
Table：Characteristics of Nonferrous Metals (Generic Data)
| Item, Type |
Nonferrous Metal |
|---|
| Copper |
Brass |
Aluminum |
Titanium |
| Density |
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8.94 |
8.47 |
2.69 |
4.51 |
| Tensile Strength |
(MPa) |
250 |
295 |
260 |
400 |
| Elastic coefficient |
(kN/mm2) |
118 |
103 |
70 |
106 |
| Coefficient of thermal conductivity |
(W/m･k) |
391 |
117 |
137 |
17 |
| Coefficient of thermal expansion |
(x10-6/℃) |
17.7 |
20.3 |
23.8 |
8.4 |
| Specific heat |
(J/kg･K) |
385 |
377 |
900 |
520 |
| Melting point |
(℃) |
1083 |
905 |
650 |
1668 |
※ 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.
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