Copper Beryllium

Copper Beryllium
alloy grade CuBe
Micro Structure
Material No. UNS System (ASTM): C17510
Chemical Composition
Cu(1,2) Fe Ni Al Be Co Si
Min (%) 1.4 0.2
Max (%) Rem 0.1 2.2 0.2 0.6 0.3 0.2
  1. Cu + Sum of Named Elements 99.5% min.
  2. Cu value includes Ag.

Mechanical Properties

Physical Properties

Melting Point – Liquidus °C 1068
Melting Point – Solidus °C 1029
Density lb/cu in. at 20°C 0.317
Specific Gravity 8.77
Electrical Conductivity% IACS at 20°C 48(1)
Electrical Conductivity% IACS at 20°C 45(2)
Thermal Conductivity Btu/ sq ft/ ft hr/ °C at 20°C 120
Coefficient of Thermal Expansion 20-200 10⁻⁶ per °C (20 – 200°C) 9.8
Specific Heat Capacity Btu/ lb /°C at 20°C 0.1
Modulus of Elasticity in Tension ksi 19200
Modulus of Rigidity ksi 7500
(1) Cold worked and precipitation hardened condition. HT Temper
(2) AT Temper

Thermal Properties

Treatment Minimum* Maximum* Value* Time** Medium
Solution Treatment 843 927 1 Water
Precipitation Treatment 454 3 Air
Hot Treatment 649 954
* Temperature is measured in Celsius.
** Time is measured in Minutes.

Fabrication Properties

Technique Stability
Brazing Good
Butt Weld Fair
Capacity for Being Cold Worked Excellent
Capacity for Being Hot Formed Good
Coated Metal Arc Welding Fair
Gas Shielded Arc Welding Fair
Oxyacetylene Welding Not Recommended
Seam Weld Fair
Soldering Good
Spot Weld Good
General Fabrication Processes
  • Cold working
  • Drawing
  • Extruding
  • Forging
  • Hot working
  • Machining

Applicable Form

Form Description
Rod Hot Extruded & Cold Drawn Copper Rod
Flat Hot Extruded & Cold Drawn Copper (Bar, Strips)

Typical Uses / Application

Product Category Product Reason
Electrical Conductors Electrical Conductivity, High Strength, Resistance to Thermal Softening, Solderability
Connectors, Heavy Duty Electrical Conductivity, High Strength, Thermal Conductivity, Retains Strength at High Temperatures, Resistance to Thermal Softening
Fuse Clips Electrical Conductivity, High Strength
Instrument Parts Electrical Conductivity, High Strength
Relay Parts Electrical Conductivity, High Strength
Switch Parts Electrical Conductivity, High Strength

Other Products