Bus Bar Material Comparison

Bus Bar Material Comparison

Bus bar material comparison chart for both copper and aluminum. Compare various bus bar properties between copper and aluminum.

Compare Bus Bar Material Properties to Ensure Your Selection Provides Optimal Performance & Service Life

bus bar material

When determining which type of material your application requires, you must consider various electrical and mechanical properties, including conductivity, strength, density, damage resistance and elasticity. Taking these properties into account will help to ensure optimal bus bar performance and a long service life.

Below is a bus bar material comparison chart, which recognizes the properties of typical copper and aluminum grades for use in bus bar manufacturing.

Property (20°C) Copper (C101) Aluminum (1350)
Electrical Conductivity (annealed) 101 % IACS 61 % IACS
Electrical Resistance (annealed) 17.2 nΩ mm 28.3  nΩ mm
Tensile Strength (annealed) 200 – 250 N/mm² 85 – 100 N/mm²
Thermal Conductivity 397 W/m°K 230 W/m°K
Elastic Modulus 116 – 130 kN/mm² 70 kN/mm²
Density 8910 kg/m² 2700 kg/m²
Melting Point 1083°C 660°C
Specific Heat 385 J/kg °K 900 J/kg °K

*Information provided by the Copper Development Association.

Get more information on copper bus bar vs aluminum, including qualitative differences (strength, ampacity, resistance, cost, etc.) and common misconceptions.

If you’re not sure whether you need copper bus bar or aluminum bus bar, just contact us online and we’ll get in touch with you shortly to discuss your application requirements.


Contact EMS Industrial today at 815.678.2700. We’d love to discuss your busbar service and machining needs.

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