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PRODUCT DISPLAY

CuCr1Zr

basic information
Release time:
2018-09-04
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Description

• 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

 

Country/Region

Chromium-Zirconium-Copper

Chromium-Copper

Zirconium-Copper

Europe

CW106C

CW105C

CW120C

International Standard

CuCr1Zr

CuCr1

CuZr

U.S.A.

C18150

C18200

C15000

 

• Chemical Composition (mass fraction)*

 

Elements

CuCr1Zr

CuCr1

CuZr

Cu

Remainder

Remainder

Remainder

Cr

0.5%-1.4%

0.3%-1.2%

-

Zr

0.02%-0.2%

-

0.11%-0.25%

Si

0.1%

0.1%

0.1%

Other

Min

Min

Min

 

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

 

• Physical Properties

 

Parameters

CuCr1Zr

CuCr1

CuZr

Density(kg/m³,20℃)

8910

8890

8890

Electrical Conductivity(mS/m·min)

≥43

≥44

≥47

IACS %

≥74%

≥76

≥80

Softening Temperature(℃)

550

475

500

Thermal Conductivity(W/m·K)

323.4

171

367

Coefficient of Thermal Expansion(20-100℃,μm/m·℃)

17.1

17.6

16.9*

 

• Mechanical Properties*

 

parameter

CuCr1Zr

CuCr1

CuZr

Hardness, Rockwell B

78-82

75-80

72-80

Tensile Strength

517-586

450-570

410-470

Tensile Strength, Yield

486-565

380-460

380-460

Elongation at Break

16

18

15

Modulus of Elasticity

117

130

129

 

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

 

• Typical Uses

 

Category

Product

Reason Category

Reason

Consumer

Pencil-type & Light Soldering Guns: Tips, Rod Extensions

Thermal Conductivity

High Thermal Conductivity

Mechanical Properties

High strength with increasing temperature.

Mechanical Properties

Stable at 370℃/700℉

Electrical

Resistance Welding Electrodes

Electrical Conductivity

High Electrical Conductivity

Thermal Conductivity

High Thermal Conductivity

Corrosion Resistance

Strong Oxidation Resistance

Mechanical Properties

High strength

Stud Bases for Power Transmitters & Rectifiers

Electrical Conductivity

High Electrical Conductivity

Thermal Conductivity

High Thermal Conductivity

Corrosion Resistance

Strong Oxidation Resistance

Softening Resistance

High Softening Temperature

Industry

Welding Electrodes

Welding Characteristics

Weldability

Welding Wheels, Tips, and Rod Extensions

Electrical Conductivity

High Electrical Conductivity

Thermal Conductivity

High Thermal Conductivity

Corrosion Resistance

Strong Oxidation Resistance

Mechanical Properties

High strength in high temperature.

 

• Specification

 

Form

Specification

Rod

φ6 ---- φ70

Bar

20×20

25×25

30×30

35×35

Block

Customization according to customer demands

 

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.

 

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