CuCr1Zr

• CuCr1Zr

• Chromium-Zirconium-Copper Alloy (CuCr1Zr)

o Chromium-Zirconium-Copper Alloy refers to the precipitation-hardening low alloy copper, adding chromium and/or zirconium with other microelements. This material is distinguished by good electrical and thermal conductivity, high strength values, even at increased temperatures, high hardness, wear-resisting, antiknock, and high softening temperature, 

• Applications 

o CuCr1Zr is widely used in electrical equipment, in plant construction and mould plates. Among those, it can be used as electrical contact, sprung conductor, electrode holder, nozzle, high temperature busbars, and moulds for resin products.

• Examples 

o Resistance welding electrode; Continuous casting mold lining; Integrated circuit lead frame; Overhead conductors for trams and electric locomotives; Contact materials and blast furnace tuyere sleeve; Rotor end rings, Exciter rails; Roller electrodes, spot welding electrodes, Elelctrode hubs, jaws for flash butt welding systems; Parts in accelerator systems subject to high electrical and thermal stress; Ingot moulds for grey cast iron and cast steel; Cast wheels and continuous casting moulds; Moulds for resin and plastic products; Commutator segment for motor commutator. 

• Material Designation

• Chemical Composition (mass fraction)*

o *According to customer demands, the chemical composition may be adjusted slightly.

• Physical Properties

• Mechanical Properties*

o *Mechanical properties are related to the product shape and heat treatment method. Please contact us for more information.

• Typical Uses

• Specification

o *The specifications and forms of products can be customized according to customer requirements, not limited to the specification shown above.

Quality Assurance

Quality Control Standards 

　　• JB/T 7598-2008 Copper chrome zirconium alloy for resistance welding electrodes 

　　• GB/T 230.1 Rockwell hardness test for metals 

　　• GB/T 3048.2 Method of electrical performance test for wire and cable ---Metal conductor material resistivity test.  

　　• GBT 33945-2017 Chromium-zirconium copper rod for commutator segment of motor commutator

　　• Reference standards

　　　　o ISO-5182 Resistance welding --- Materials for electrodes and ancillary equipment

　　　　o ASTM B747 Standard Specification for Copper-Zirconium Alloy Sheet and Strip

　　　　o BS EN 12167 Copper and copper alloys -- Profiles and rectangular bar for general purposes.

　　　　o If demands, other quality standards can be adopted. Please consult for more details

Quality Inspection Method

• Digital displayed eddy current conductance meter is used to measure the conductivity of finished products. 

• The hardness of the finished product was measured by vertical automatic rockwell hardness tester. 

• he contents of various components of chrome-zirconium copper were tested by advanced spectroscopic analyzer. 

• Use ultrasonic flaw detector to nondestructive test whether the finished product has internal defects. 

• Digital inspection instruments can significantly reduce the random errors generated by manual measurement and reading, with more accurate data and better quality control.

Quality Management System

• In accordance with ISO9001, the company implements production management, strictly controls every process in the supply chain, and asigns specialists to control and assure the quality of products from raw material inbound to finished product outbound, aiming to 100% customer satisfaction.