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Copper Zirconium Copper

|Alloy Grade - CuZr

Material No. Unified Numbering System (UNS): C15000

Chemical Composition

Element Cu(1,2) Zr
Min (%) 0.1
Max (%) Rem 0.2
  • Cu value includes Ag.
  • Cu + Sum of Named Elements 99.9% min.

This is high conductivity heat treatable copper alloy. Heat treatment cycle consist of Solutionising, Cold work & ageing Process.

Common Fabrication Processes

  • Bending
  • Cold working
  • Drawing
  • Extruding
  • Forging
  • Hot working
  • Ring Rolling
  • Machining

Mechanical & Electrical Properties

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Form Tensile Strength In N/MM2 Elongation In % Rockwell Hardness in F scale -HRF Conductivity% IACS at 20°C
Rod >240 >10 >85 >90% IACS
Flat >240 >10 >85 >90% IACS
Rotor Bar >365 ≥11 ≥90 ≥93% IACS
SC Ring 325-385 ≥11 ≥90 ≥93% IACS

Physical Properties

Melting Point – Liquidus °C 1080
Melting Point – Solidus °C 980
Density lb/cu in. at 20°C 0.321
Specific Gravity 8.89
Electrical Conductivity% IACS at 20°C 90(1)
Thermal Conductivity Btu/ sq ft/ ft hr/ °C at 20°C 212
Coefficient of Thermal Expansion 20 – 100 10-6 per °C (20 – 100°C) 9.4
Coefficient of Thermal Expansion 20 – 300 10-6 per °C (20 – 300°C) 9.8
Specific Heat Capacity Btu/ lb /°C at 20°C 0.092
Modulus of Elasticity in Tension ksi 18700
  • Solution annealed, 84% cold worked and aged.

Applicable Form & Size

Form Size
Rod

Dia: Ø6 mm-Ø50mm

Length: 2 Mtr. max

Dia: Ø51 mm-Ø100mm

Length: 1 Mtr max

Dia: Ø101 mm-Ø145mm

Length: 0.5 Mtr max

Flat / Rotor Bar

Thick: 5 mm - 60 mm

Width: 20 mm - 150 mm

Length: 2000 max

Wheel

Dia: Ø400 mm max

Thick: 5 mm – 50 mm

Short Circuit Ring

OD: Ø270 – Ø800 mm

ID: Ø160 – Ø700 mm

Thick: 17mm to 90mm

Apart from above we can also manufacture as per customer specification

Typical Applications

Electrical

  • Electrical Connectors
  • Electrical Contacts for MV/HV Switchgear Application
  • Short Circuit Rings and Rotor bars for Traction motor application of Indian Railway

Industrial

  • Resistance welding electrodes
  • Seam Welding Wheels