Chromium Zirconium Copper (CuCrZr)
High Strength Copper Alloy
Chromium Zirconium Copper (CuCrZr) is a high-performance copper alloy combining excellent electrical conductivity, high mechanical strength and outstanding thermal stability.
Chromium Zirconium Copper (CuCrZr) is a high-performance copper alloy combining excellent electrical conductivity, high mechanical strength and outstanding thermal stability.
High Strength Copper Alloy for Resistance Welding Electrodes, Electrical Contacts and High Temperature Applications
Chromium Zirconium Copper (CuCrZr) is a high-performance copper alloy containing chromium and zirconium elements. It is specially developed to provide a combination of excellent electrical conductivity, high mechanical strength and superior resistance to softening at elevated temperatures.
Compared with pure copper, CuCrZr offers significantly improved hardness, wear resistance and high-temperature stability while maintaining good electrical and thermal conductivity.
Chromium Zirconium Copper is widely used in resistance welding electrodes, welding wheels, electrical contacts, electrode arms and other industrial components requiring both electrical performance and mechanical durability.
Sunny Steel supplies CuCrZr copper alloy products in tubes, rods, plates, bars and customized components according to customer requirements.
Products are manufactured and inspected in accordance with the following national, industrial and international standards.
| Category | Standard | Scope |
|---|---|---|
| National (China) | GB/T 5231 (2012 / 2022) | Designation and chemical composition of wrought copper and copper alloys |
| Industry (China) | YS/T 584-2006 | Chromium-zirconium copper rod for electrode materials |
| Industry (China) | YS/T 649-2007 | Extruded rod and bar of copper and copper alloys |
| Industry (China) | YS/T 662-2007 | Extruded tube of copper and copper alloys |
| National (China) | GB/T 4423-2007 | Copper and copper alloy drawn rod |
| National (China) | GB/T 1527-2006 | Copper and copper alloy drawn tube |
| National (China) | GB/T 2040-2002 | Copper and copper alloy plate |
| ASTM | ASTM B187/B187M, B133, B301 | Copper bar, bus bar, rod, shapes and free-cutting copper rod |
| RWMA | RWMA Class 2 | Resistance welding electrode material classification (CuCrZr) |
| DIN / EN | DIN 17666, DIN 17672-1, DIN 17671-1 EN CW106C (2.1293) |
Wrought CuCrZr chemical composition, bar and tube |
All materials are supplied with EN 10204 3.1 Mill Test Certificate. Third-party inspection (SGS, BV, TÜV) available upon request.
Engineered for electrical, thermal and mechanical performance.
| Item | Specification |
|---|---|
| Material | Chromium Zirconium Copper |
| Material Designation | CuCrZr |
| Common Equivalent | C18150 / C18200 |
| Main Alloy Elements | Copper, Chromium, Zirconium |
| Product Forms | Tube, Rod, Bar, Plate, Sheet, Custom Components |
| Condition | Annealed / Heat Treated |
| Surface | Machined / Polished / Customized |
Cu = Remainder. Values shown are nominal alloying-element content (wt%).
| China Grade | Int’l (Similar) | USA UNS | Main Alloying Elements (%) | |||
|---|---|---|---|---|---|---|
| Zr | Cr | Ni | Si | |||
| TCr1 | CuCr1 | C18200 | – | 0.6 – 1.2 | – | – |
| TCr0.5 | CuCr0.5 | – | – | 0.4 – 1.1 | – | – |
| TCr0.8 | – | – | – | 0.6 – 0.9 | – | – |
| TCr1Zr0.15 | CuCr1Zr | C18150 | 0.05 – 0.25 | 0.50 – 1.5 | – | – |
| TUZr0.15 | – | – | 0.11 – 0.21 | – | – | – |
| TZr0.15 | – | C15000 | 0.10 – 0.20 | – | – | – |
| TZr0.2 | – | – | 0.15 – 0.30 | – | – | – |
| TZr0.4 | – | – | 0.30 – 0.50 | – | – | – |
| TNi2.4Cr0.6Si0.5 | – | C18000 | – | 0.1 – 0.8 | 1.8 – 3.0 | 0.40 – 0.80 |
Notes:
• CuCr1Zr (C18150) and TCr1Zr0.15 are the most widely used grades for resistance-welding electrodes and high-strength conductive components.
• TNi2.4Cr0.6Si0.5 (C18000) is a Cu-Ni-Si-Cr alloy offering an excellent strength-to-conductivity ratio.
• All products are supplied with EN 10204 3.1 Mill Test Certificate; third-party inspection (SGS, BV, TÜV) available upon request.
| Property | Typical Value |
|---|---|
| Density | Approx. 8.9 g/cm³ |
| Melting Range | Approx. 1080–1085°C |
| Electrical Conductivity | High conductivity copper alloy |
| Thermal Conductivity | Excellent |
| Hardness | Higher than pure copper |
Sunny Steel supplies copper alloy materials in various forms to meet different industrial manufacturing requirements.
Copper alloy tubes are widely used in heat transfer equipment, electrical systems, mechanical components and customized industrial applications.
Copper alloy rods provide excellent machinability and mechanical performance for machining parts, electrical components and precision applications.
Copper alloy plates offer good strength, corrosion resistance and wear resistance for structural and industrial components.
Copper alloy sheets are suitable for electrical components, precision parts and fabrication applications.
Copper alloy bars are commonly used for machining, manufacturing and engineering applications requiring reliable mechanical properties.
Customized copper alloy products can be manufactured according to customer drawings and technical requirements.
Chromium Zirconium Copper provides an ideal combination of conductivity, strength and high-temperature stability.
CuCrZr is one of the most widely used materials for resistance welding electrodes due to its excellent conductivity, hardness and resistance to deformation during repeated welding cycles.
Used for welding wheels and electrode components requiring high wear resistance and stable performance under continuous operation.
Chromium zirconium copper is suitable for electrical contact components requiring good conductivity combined with mechanical strength.
Used in welding machines and industrial equipment where high strength and electrical performance are required.
Suitable for components exposed to elevated temperatures where pure copper would lose strength due to softening.
Used for customized copper alloy components requiring excellent dimensional stability and wear resistance.
Chromium zirconium copper (CuCrZr) products combine high electrical conductivity with excellent mechanical strength and resistance to softening at elevated temperatures.
Widely used for resistance welding electrodes, electrical contacts and precision-machined components requiring high conductivity and wear resistance.
Designed for applications requiring efficient heat transfer and structural strength, such as cooling systems and thermal management components.
Suitable for structural parts, electrical assemblies and custom-fabricated components in demanding industrial environments.
Supplied in straight lengths for machining applications where high strength, hardness and electrical conductivity are critical.
Custom-engineered welding electrodes manufactured to customer specifications, offering excellent resistance to deformation and softening during prolonged welding cycles.
Precision-machined CuCrZr parts produced according to customer drawings, including complex geometries and tight-tolerance profiles for specialized applications.
Strict quality control ensures CuCrZr products achieve stable chemical composition, mechanical properties and dimensional accuracy.
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Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.
Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.
The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.
Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.
The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.
When you partner with Sunny Steel, you can stop worrying about meeting deadlines thanks to our responsive and timely service. You'll also say goodbye to unnecessary shopping around. Instead, you'll get white glove service from an expert who understands your needs and can get you the materials you need quickly.
