KUPROY® 4
Nickel Silicon Copper / CuNi2Si / KUPROY® 4
Bridge the gap between efficiency and durability with KUPROY® 4. Developed by Çorum Bronz, this Nickel Silicon Copper alloy is designed for high-stress electrical and mechanical environments. Offering exceptional wear resistance and high thermal stability, it is the premier choice for heavy-duty contacts and precision molding components. Reliability that powers your industry.
01. Chemical Composition (%)
science02. Supply Forms
inventory_203. Mechanical Properties
engineering| Property Name | Imperial (psi) | Metric (MPa) | Test Method |
|---|---|---|---|
| Tensile Strength (Rm) | Rm | 550 - 650 N/mm² | |
| Yield Strength (Rp0.2) | min. 450 N/mm² | ||
| Hardness | 160 - 190 HB |
04. Technical Resources
folder_open05. Compliance Standards
verified_userAreas of Use
settings_suggest| Electrical Engineering: Heavy-duty switchgear components, contact carriers, and high-voltage circuit breaker parts. | |
| Resistance Welding: Electrode holders, spot welding electrodes, and components for welding stainless steel. | |
| Plastic Injection Molding: High-strength cooling pins, core inserts, and nozzles. | |
| Mechanical Parts: Valve guides, bearing bushes, and fasteners for high-temperature applications. | |
| Automotive: Connectors and specialized engine components requiring thermal resilience. |
Notes
note_altKUPROY® 4: CuNi2Si – The Versatile Powerhouse of Copper Alloys
When standard copper alloys are too soft and high-beryllium alloys are not required, KUPROY® 4 (CuNi2Si) stands as the ideal mid-range solution. Produced with the metallurgical expertise of Çorum Bronz, this alloy is specifically treated to offer high mechanical properties without sacrificing the essential conductivity that copper is known for.
Metallurgical Excellence
The strength of KUPROY® 4 comes from the formation of nickel-silicides within the copper matrix during heat treatment. This precipitation hardening process allows the material to reach a level of hardness and fatigue resistance that makes it perfect for moving electrical parts and structural components exposed to heat.
Operational Advantages
Durability in Motion: Its excellent friction and wear characteristics make it a top choice for valve guides and bushings that must operate under thermal stress.
Thermal Efficiency: While it is a high-strength alloy, it retains enough thermal conductivity to be highly effective in plastic injection mold cooling systems, helping to reduce cycle times.
Reliability: CuNi2Si is known for its excellent resistance to stress-corrosion cracking, ensuring that critical electrical infrastructure remains safe and operational over long periods.
Çorum Bronz provides KUPROY® 4 in various forms, including rods, bars, and plates, all manufactured to meet international standards such as DIN 2.0855 and EN 12163.
Upgrade your components with the balanced strength of KUPROY® 4. Contact Çorum Bronz today for technical data and global shipping options.