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T: +86-571-8663-6649
E: hzbjys@hzbjys.com
E: hzbjys@hzbjys.com
7/F, 1st Building Of ZhongHao WangJiang International Center, NO.332 East WangJiang Road, HangZhou, ZheJiang, China.
Copper Chromium Zirconium (UNS C18150 / CuCr1Zr) is a premier high-conductivity, high-strength copper alloy. We engineer it for demanding industrial environments where standard copper loses mechanical integrity. This heat-treatable alloy undergoes precipitation hardening through precise chromium and zirconium additions. The result is an outstanding balance of electrical and thermal conductivity. It also offers exceptional resistance to softening at elevated temperatures. Known internationally as EN CW106C or RWMA Class 2, this metal maintains its hardness under extreme thermal stress.
As a global sourcing partner, Hangzhou Target Import & Export Co., Ltd. (HZTarget Metal) leverages strategic factory partnerships. We supply premium raw material stock from top state-owned metal enterprises. Our extensive supply chain guarantees consistently high-grade copper alloys. Every product complies fully with international standards and is backed by robust logistics.
At HZTarget Metal, we recognize that different industrial applications demand specific raw material geometries. We supply an extensive inventory of C18150 in multiple product shapes. We easily accommodate both specialized low-MOQ orders and high-volume commercial runs. Our manufacturing partners utilize precise cut-to-size sawing, custom extrusion, and wire drawing. This ensures we meet the exact dimensions required for your specialized engineering projects.
Our C18150 rods are available in round, hexagonal, and flat bar configurations. These shapes are perfect for precision machining into electrodes, connectors, and structural parts. We supply bars in standard mill lengths or custom-cut sizes using high-tolerance band saws. The uniform grain structure ensures excellent machinability during turning and milling processes.
For heavy-duty applications, we supply premium CuCrZr plates, sheets, and thick blocks. Using computer-controlled sawing equipment, we customize dimensions to suit industrial molds and heavy resistance welding plates. These flat products exhibit superb flatness tolerances and minimal internal stress. This minimizes warping during downstream machining.
We also offer thin-gauge, high-conductivity wire and flexible coils tailored to modern electrical applications. For unique engineering geometries, our custom extrusion capabilities allow us to manufacture specialized profiles. We base these directly on OEM drawings, which minimizes material waste and reduces machining time.
To assist engineering teams, we maintain strict compliance with global quality standards. Our Copper Chromium Zirconium products conform to major international specifications. This ensures seamless integration into global supply chains. Below are the key chemical compositions and mechanical benchmarks for UNS C18150.
The precise addition of chromium and zirconium provides superior thermal stability compared to pure copper. Here is the standard chemical makeup and equivalent designations across international grading systems.
| Standard Code | Equivalent Grades | Cu (%) | Cr (%) | Zr (%) | Other Impurities (%) |
|---|---|---|---|---|---|
| UNS C18150 / CW106C | DIN 17666, JIS H3250, RWMA Class 2 | Balance (98.0 min) | 0.5 - 1.2 | 0.03 - 0.3 | Fe Max 0.08, Si Max 0.1, Pb Max 0.01 |
Depending on the heat treatment and cold-working process, this alloy is typically supplied in TF00 or TH04 tempers. TF00 represents fully heat-treated material, while TH04 indicates hard-drawn and aged stock. The table below outlines their mechanical and physical baselines.
| Property | TF00 Temper (Solution Heat-Treated & Aged) | TH04 Temper (Hard-Drawn & Aged) |
|---|---|---|
| Tensile Strength (MPa) | 350 - 450 | 440 - 540 |
| Hardness (HRB / HV) | 70 - 80 HRB / 130 - 150 HV | 75 - 85 HRB / 145 - 170 HV |
| Electrical Conductivity (% IACS) | 75 - 80 | 80 - 85 |
| Softening Temperature (°C) | 500 | 500 |
| Density (g/cm³) | 8.9 | 8.9 |
Thanks to its thermal conductivity and mechanical strength, RWMA Class 2 Copper Chromium Zirconium excels in high-wear environments. It resists deformation, thermal cracking, and material transfer at elevated temperatures. This makes it an indispensable resource across multiple heavy industrial sectors.
In the automotive and appliance manufacturing sectors, this alloy is the global standard for resistance welding electrodes. It is widely used for spot welding caps, electrode holders, and seam welding wheels. When welding galvanized steel, the alloy's resistance to softening prevents the tips from mushrooming. This ensures consistent weld quality and reduces production downtime.
For high-vacuum physical vapor deposition (PVD) systems, C18150 serves as an exceptional backing plate material. Its high thermal conductivity ensures efficient heat dissipation during high-power sputtering. Additionally, its superior yield strength prevents backing plate deformation under vacuum pressure.
In heavy metallurgy, this material is widely utilized for continuous casting molds and damper rings. Rapid heat transfer and structural stability are critical in these steel mill applications. Furthermore, its reliable electrical performance makes it ideal for high-voltage switchgear and power transmission connectors.
HZTarget Metal provides comprehensive OEM/ODM customized processing to deliver ready-to-use components. Utilizing state-of-the-art CNC machinery, we fabricate custom copper parts directly from your engineering drawings. Whether you require finished spot welding caps or intricately machined backing plates, we guarantee strict dimensional tolerances. Our team manages the entire manufacturing cycle from raw billet extrusion to final precision-machined parts.
As a professional supplier of high-grade non-ferrous metals, HZTarget Metal operates a rigorous quality control system. Our partner factories utilize advanced testing instruments, including eddy current conductivity and Rockwell hardness testers. We ensure compliance with major standards like ASTM, JIS, DIN, and RoHS. Complete Material Test Reports (MTR) accompany every delivery.
We offer comprehensive trade support to ensure a seamless purchasing experience. Our team conducts thorough pre-shipment factory inspections and arranges seaworthy packaging to protect your materials. Whether you require flexible small-order quantities or complex global customs clearance, we handle the logistics. Contact us today to partner with a reliable Copper Chromium Zirconium supplier and discuss your exact specifications.
