Chromium Zirconium Copper C18150 CuCr1Zr Rod Bar for Electrode

//Chromium Zirconium Copper C18150 CuCr1Zr Rod Bar for Electrode

Chromium Zirconium Copper C18150 CuCr1Zr Rod Bar for Electrode, RWMA Class 2 CuCrZr CuCr1Zr C18150 RWMA COPPER ALLOYS, CuCrZr CuCr1Zr DIN 2.1293 Chromium Zirconium Copper Tubing Round Bar, Electrode C18150 Copper Rod China Supplier

Chromium Zirconium Copper C18150 CuCr1Zr Rod Bar for Electrode – 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.

Chemical Composition
Cr: 0.50-1.50%
Zr: 0.05-0.25% Min.
Cu: Reminder
Note: Copper plus additions equal 99.5% minimum.

Physical Properties
Specific Weight: 8.90g/cm3
Specific Heat: 0.376J/g*k
Heat Conductivity: 320W/m*K
Electrical Resistivity:: 0.023 ohm*mm2/m
Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C): 17 x 10-6
Electrical Conductivity: min 44 m/ohm*mm2 80.00%IASC
1). the units are based upon Metric.
2). the typical physical properties apply to age hardened products.

Chromium zirconium has some of the most extensive applications. Here are just a few examples of the applications of this metal type:
Back-up electrodes
Nut & stud welding electrodes
Caps & shanks
Circuit breaker parts
Collector connector, collector housing, connector bar, connectors, and connection lead bars
Cross wire welding electrodes & components
Electrode holders & adaptors
Flash & butt welding dies
Power generation products
Resistance welding electrodes
Spot welding electrodes
Transmission devices
Welding arms, connectors, and platens.

C18150 Details & Applications:
C18150 Chromium Zirconium Copper
CuCr1Zr – UNS.C18150 Chromium Zirconium Copper C18150 is an excellent and unique copper alloy with high electrical conductivity, hardness, and ductility, moderate strength, and excellent resistance to softening at elevated temperatures. The addition of 0.1% zirconium (Zr) and 1.0% chromium (Cr) to copper results in a heat treatable alloy which may be solution treated and subsequently aged to produce these desirable properties. Rod is usually supplied from the mill in the fully aged and drawn condition so no further heat treatment is required by the fabricator. The softening temperature of properly heat treated C18150 rod exceeds 500°C as compared to unalloyed pure copper which softens at 200°C, and silver bearing coppers which soften at 350°C.
Furthermore, many evidences shows that C18150 can provide less sticking and resisting deformation longer than its C18200 counterpart in some specific situations. Copper Brass, RWMA Class 2 Copper Alloy Rods, Chromium Zirconium Class 2 Alloy C18150 Copper Rods

Typical Application for C18150 Chromium Zirconium Copper Alloys:
Electrical Industry: Resistance Welding Electrodes, Circuit Breaker Switches
Consumer: Rod Extensions, Pencil-type, Light Soldering Guns, Tips
Industrial: Welding Wheels, Tips and Rod extensions for resistance seam and spot welding



Chemical Composition


Hardness at 20 C(68 F)

Electrical Conductivity at 20 C(68 F)

Conductivityat 20 C(68 F)

Melting range

Coefficient of Thermal Expansion at 20 C(68 F)

Tensile Strength at 20 C(68 F)

Elongation at 20 C(68 F)


Rods/Bars/ Plates

Cr: 0.50-1.50%
Zr: 0.05-0.25%
Cu: Balance
Note: Copper plus additions equal 99.70% minimum.


%IACS at 68 F

Btu/(ft-hr. F) at 68 F


10-6 per F (68-572 F)





/cm at 20 C

W/m  K at 20 C


10-6 per C (20-300 C)








75 Min.

10 Min.







520 Min.

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