Copper balls are widely used in conductive, electrical-contact and specialized industrial applications requiring high electrical conductivity, ductility and non-magnetic performance.
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Copper balls are commonly used in conductive, electrical-contact and soft-contact ball applications.
Copper balls are manufactured from high-purity copper materials and are widely used where electrical conductivity and thermal conductivity are important.
Compared with standard steel balls, copper balls provide significantly higher electrical conductivity and better thermal-transfer performance, making them suitable for conductive balls, electrical-contact applications and soft metallic contact applications.
Copper balls also provide non-magnetic properties and good ductility for applications requiring soft metallic contact surfaces.
Due to their relatively soft structure compared with bearing steel balls, copper balls are generally not recommended for high-load rolling element bearing applications.
| Item | Specification |
| Material | Pure Copper |
| Typical Materials | C1100 / Pure Copper |
| Structure | Solid copper ball |
| Size Range | 1 mm – 50.8 mm (larger sizes upon request) |
| Grade | Depending on ball application requirements |
| Density | Approx. 8.9 g/cm³ |
| Electrical Conductivity | Excellent (~100% IACS) |
| Thermal Conductivity | Excellent |
| Corrosion Resistance | Good in atmospheric environments; not suitable for oxidizing acids or ammonia environments |
| Hardness | Approx. 40–60 HV (very soft compared with bearing steel) |
| Magnetic Properties | Non-magnetic |
| Temperature Recommendation | Suitable for low-to-moderate temperature applications; continuous high-temperature oxidation should be considered |
| Design Note | Softer than steel balls; not suitable for high-load or high-wear rolling applications |
| Surface Appearance | Metallic copper color |
| Packing | Carton / Plastic bag / Steel drum / Custom |
| Condition | Clean and dry or lightly oiled |
| Delivery Time | Stock available for standard sizes or production based |
| Ball Type | Main Features | Typical Ball Applications |
| Copper Balls | Excellent electrical and thermal conductivity | Conductive balls, electrical-contact balls and soft-contact applications |
Copper balls are generally selected for conductivity and specialized industrial applications rather than precision rolling bearing systems.
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Contact: Nicky Yang
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Email: nicky@stw-industrial.com
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