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Chromium Zirconium Copper

Your Professional Chromium Zirconium Copper Supplier

LUOYANG HONGSHENG TRADING CO., LTD is a professional and innovative manufacturer of metal materials. We operate with a dedicated R&D team, modern production lines, and a stringent quality management system. Our main products include metal materials such as copper, steel, titanium, and various metal alloys. We also provide OEM services, manufacturing products according to customer drawings. "Technology and service lead the market" has become our company culture. We look forward to building long-term cooperation with you through high-quality products and professional service.

Chromium zirconium copper (CuCrZr) is one of our most important copper alloy materials. It is a high-strength, high-conductivity copper alloy that offers excellent electrical and thermal conductivity along with outstanding resistance to softening at high temperatures. These properties make it a critical material for resistance welding electrodes, precision molds, and aerospace applications.

The Chromium zirconium copper alloy's performance is optimized through vacuum melting, solution and aging treatment, and cold working. This process achieves a significant improvement in hardness and wear resistance while maintaining electrical conductivity close to that of pure copper. As an environmentally friendly high-performance alternative to beryllium copper, CuCrZr has long been favored by customers around the world.

C18200 Copper Alloy

Grade:C18200,QCr1-0,C18150 etc.. Standard:AISI ASTM GB JIS. Temper:Soft,1/2hard,1/4hard,etc.. Edge:Mill Edge,Slit Edge. Specification:Customize. Resistance Welding Industry:Seam Welding. Transport

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CW106C Chromium Zirconium Copper

Grade:CW106C,2.1293 CuCrZr,C18000. Standard:GB,AISI,ASTM,DIN,EN,JIS. Temper:Soft state,1/4H,1/2H,Full Hard. Surface:Mirror Polished,Bright,Mill,Antique,etc. Shape:Plate, Bar, Tube,Wire etc.

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Chromium Zirconium Copper Sheet

C18150 chromium-zirconium copper (chemical formula CuCrZr) is a copper-based alloy reinforced with chromium (0.1%-1.5%) and zirconium (0.02%-0.6%). It possesses high electrical conductivity, high

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Chromium Zirconium Copper Rod

Chromium zirconium copper (CuCrZr) is renowned for its excellent electrical and thermal conductivity, high hardness, wear resistance, and resistance to cracking, explosion, and softening at high

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C18150 Chromium Zirconium Copper Alloys

C18150 chromium zirconium copper is a copper chromium zirconium precipitation strengthened copper alloy, belonging to high-strength and high conductivity copper alloy materials. This alloy is made by

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What is Chromium Zirconium Copper?

Chromium Zirconium Copper (CuCrZr) is a high-strength, high-conductivity copper alloy. Its composition includes a copper matrix with 0.1–1.5% chromium and 0.02–0.6% zirconium. Key properties: hardness >75 HRB, electrical conductivity ≥75% IACS, softening temperature 550°C, density 8.89–8.94 g/cm³, melting point 1030–1100°C, tensile strength 300–640 MPa, and elastic modulus ~117 GPa.

Performance is optimized through vacuum melting, solution aging, and cold working. The alloy is widely used for resistance welding electrodes, EDM electrodes, molds, motor commutators, and electrical connectors. It also serves aerospace (engine parts, turbine blades), automotive (welding electrodes, brake discs), and electronics (connectors, semiconductor heat sinks). With better cost-performance than beryllium copper, it is a common substitute for beryllium copper in high-strength, high-thermal-conductivity applications such as plastic and shoe molds.

characteristics of chromium zirconium copper

1. Excellent Electrical and Thermal Conductivity

Chromium zirconium copper maintains high electrical conductivity (≥75% IACS) while also offering good thermal conductivity of approximately 330 W/(m·K). This makes it excel in power transmission and heat exchange applications, effectively reducing energy loss and improving system efficiency.

2. High Strength and Hardness

Through appropriate heat treatment, chromium zirconium copper achieves high strength and hardness. Its tensile strength reaches ≥380 N/mm², with a hardness of HRB 78–83 and HV 110–145. This allows it to withstand significant mechanical stress, making it suitable for manufacturing components that bear heavy loads and friction.

3. Good Wear Resistance and Fatigue Resistance

Thanks to its high strength and unique microstructure, chromium zirconium copper offers excellent wear resistance, maintaining stable performance under long-term friction conditions. It also has good fatigue resistance, capable of withstanding alternating loads and extending the service life of parts.

4. Crack Resistance and High Softening Temperature

Chromium zirconium copper exhibits good crack resistance and is not prone to cracking during processing or use. Its softening temperature reaches as high as 550°C, allowing it to maintain good mechanical properties in high-temperature environments. This makes it suitable for high-temperature working conditions.

Specification

RWMA Class	Type of Material	CDA No.	Primary Use
Class 1	Copper-Zirconium	C15000	Zirconium Copper is used in spot welding electrodes and seam weld wheels. It is particularly useful when welding galvanized materials because of its high thermal conductivity, which prevents sticking.
Class 2	Copper-Chromium	C18200	Chromium Copper is the primary copper alloy for high level production spot and seam welding of clean mild steel, low alloy steels, stainless steel, low conductivity brasses and bronzes, nickel-silver, nickel, nickel alloys, and monel. It is also suitable for projection welding dies, seam welder shafts and bearings, flash and butt welding dies, and current-carrying structural members.
Class 2	Copper-Chromium-Zirconium	C18150	Chromium Zirconium Copper is used as an electrode material for welding galvanized steel and other metallic-coated materials. It has improved creep resistance at high operating temperatures.
Class 3	Copper-Nickel-Silicon-Chromium	C18000	Class 3 Beryllium Free Copper is a very hard, heat-treatable copper with moderate electrical conductivity that is ideal for use as seam weld wheels, projection welding dies, flash and butt welding dies, current-carrying shafts and bushings, high stressed structural current-carrying members, electrode holders, and high pressure electrodes where the welded material has a high electrical resistance.
Class 3	Copper-Nickel-Beryllium	C17510	Class 3 Beryllium Copper is heat-treatable with moderate electrical and thermal conductivity and high tensile strength. It is recommended for projection welding dies, flash and butt welding dies, current-carrying members, and heavy-duty offset electrode holders. It is also generally recommended for spot and steam welding steels with high electrical resistance, such as stainless steel.
Class 4	Copper-Beryllium	C17200	Class 4 Beryllium Copper has extremely high hardness and tensile strength but less electrical conductivity than Class III alloys. It is recommended as the electrode material for special flash, upset-butt and projection welding applications where pressures are extremely high and wear is severe, but where heat is not excessive. They are used frequently in the form of inserts and facings and seam welding bushings.
C10100	Oxygen-Free Copper	C10100	Oxygen-Free Copper has the highest conductivity of all coppers. It is used for electrical and electronic conductors, wave guides, cavity resonators, super conductor matrixes, vacuum tube and solid-state devices, and glass to metal seals.
C11000	Electrolytic Copper	C11000	Electrolytic Copper's malleability allows it to be readily bent, soldered, drilled, welded, and formed to fit almost any design. It is primarally used for plumbing fitting and some electrical compenents that do not require extensive machining.

Advantages of Using Copper Chromium Zirconium

Chromium Zirconium Copper Rod from china

High-temperature performance

Retains strength and hardness even after long-term exposure to elevated temperatures.

Low maintenance

Its corrosion resistance reduces the need for frequent replacements

Chromium Zirconium Copper Alloys from china

Minimal deformation under load

Ideal for electrodes and mold components.

Superior lifecycle

Lasts significantly longer in tooling applications compared to conventional copper.

Applications of Copper Chromium Zirconium

Electrical Industry

One of the primary uses of copper chromium zirconium is in the electrical industry, where it is employed in components that require both high conductivity and mechanical strength.

Aerospace and Automotive Industries

Copper chromium zirconium is also widely used in aerospace and automotive applications, where its strength-to-weight ratio and resistance to heat make it highly desirable.

Molding and Tooling

In plastic injection molding and metal die casting, copper chromium zirconium is used for mold inserts and cores. The excellent thermal conductivity helps in reducing cycle times, and its strength ensures durability under high pressure.

Resistance Welding Equipment

Because of its wear resistance and ability to conduct electricity efficiently, it is often chosen for resistance welding components.

FAQ

Q: What is copper chromium zirconium used for?

A: Copper chromium zirconium is used for resistance welding, electrical connectors, molding tools, aerospace components, and automotive engine parts, due to its excellent conductivity and strength.

Q: Is copper chromium zirconium better than beryllium copper?

A: While beryllium copper is stronger, copper chromium zirconium offers better electrical conductivity and is less toxic, making it safer and more suitable for electrical applications.

Q: What industries use copper chromium zirconium the most?

A: Industries such as automotive, aerospace, electronics, and plastics manufacturing are major users of CuCrZr.

Q: How is copper chromium zirconium heat treated?

A: It undergoes solution treatment, quenching, and aging to achieve a balance of hardness and conductivity.

Q: What are the typical grades of copper chromium zirconium?

A: UNS C18150 and C18155 are common grades, often aligned with RWMA Class 2 standards.

As one of the leading chromium zirconium copper manufacturers in China, we warmly welcome you to buy high quality chromium zirconium copper at competitive price from our factory. For more cheap products, contact us now.

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