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E-Mail: kevinhealey@alloywire.com

Beryllium Copper CB 101
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Beryllium Copper CB 101

Available in any of the 'profile options'

This age hardenable copper alloy combines a range of properties suited to meet the exacting requirements of many automotive, electronic and aerospace industries.

Beryllium Copper CB 101 is also known as Cupro Beryllium, Beryllium Copper Alloy 25, Berylco 25, NGK 25, and Ampcoloy 83.

Chemical Composition Specifications Designations Key Features Typical Applications
Element Min % Max %
Be 1.70 2.10
Fe 0.20
Ni 0.30
Co 0.30
Cu bal
ASTM B196
ASTM B197
BS 2873
BS EN 12166
W.Nr 2.1247
UNS C17200
AWS 140
Good conductor of electricity
Age hardenable
Good mechanical properties
Springs
Electrical connectors & switches
Electronic components
Density 8.25 g/cm³ 0.298 lb/in³
Melting Point 980°C 1800°F
Coefficient of Expansion 17.8 μm/m °C (20 – 100°C) 9.9 x 10-6 in/in °F (70 – 212°F)
Modulus of Rigidity 47 kN/mm² 6817 ksi
Modulus of Elasticity 123 kN/mm² 17840 ksi
Heat Treatment of Finished Parts
Condition as supplied by Alloy Wire Type Temperature Time (Hr) Cooling
°C °F
Annealed Age Harden 315 – 320 600 – 610 3 Air
Spring Temper Age Harden 315 – 320 600 – 610 2 Air
Properties
Condition Approx. tensile strength Approx. operating temperature
N/mm² ksi °C °F
Annealed 400 – 600 58 – 87 up to +200 up to +390
Annealed + Aged 800 – 1200 116 – 174 up to +200 up to +390
Spring Temper 800 – 1200 116 – 174 up to +200 up to +390
Spring Temper + Aged 1200 – 1600 174 – 232 up to +200 up to +390

The above tensile strength ranges are typical. If you require different please ask.

 

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