Alloy Wire International
Datasheet: Beryllium Copper CB 101
Beryllium Copper CB 101
This age hardenable copper alloy combines a range of properties suited to meet the exacting requirements of many automotive, electronic and aerospace industries .A good conductor of electricity, Beryllium Copper CB 101 is used in the manufacture of different types of springs.
Beryllium Copper CB 101 is also known as Cupro Beryllium, Beryllium Copper Alloy 25, Berylco 25, NGK 25, and Ampcoloy 83.
Available in all profile options
Key Features
Beryllium Copper CB 101 offers the following key features:
Good conductor of electricity.
Age hardenable.
Good mechanical properties.
Typical Applications
Beryllium Copper CB 101 is known to be suitable for the following applications:
Springs
Electrical connectors & switches
Electronic components
Designations
W.Nr 2.1247
UNS C17200
AWS 140
Specifications
ASTM B196
ASTM B197
BS 2873
BS EN 12166
Chemical Composition
The chemical composition of Beryllium Copper CB 101 is indicated in the table below:
| Element | Min % | Max % |
|---|---|---|
| Be | 1.70 | 2.10 |
| Fe | – | 0.20 |
| Ni | – | 0.30 |
| Co | – | 0.30 |
| Cu | bal | bal |
Alloy Details
Beryllium Copper CB 101 density, melting point, coefficient of expansion, modulus of rigidity, and elasticity is indicated in the table below:
| Density | Melting Point | Coefficient of Expansion | Modulus of Rigidity | Modulus of Elasticity |
|---|---|---|---|---|
| 8.25 g/cm³ | 980 °C | 17.8 μm/m °C (20 – 100 °C) | 47 kN/mm² | 123 kN/mm² |
| 0.298 lb/in³ | 1800 °F | 9.9 x 10-6 in/in °F (70 – 212 °F) | 6817 ksi | 17840 ksi |
Heat treatment of finished parts
The typical heat treatment of Beryllium Copper CB 101:
| Condition as supplied by AWI | Type | Temperature | Time | Cooling |
|---|---|---|---|---|
| Annealed | Age Harden | 315 – 320 °C (600 – 610 °F) | 3 Hr | Air |
| Spring Temper | Age Harden | 315 – 320 °C (600 – 610 °F) | 2 Hr | Air |
Properties
The typical mechanical properties of Beryllium Copper CB 101:
| Annealed | ||
|---|---|---|
| Approx. tensile strength | <600 N/mm² | <87 ksi |
| Approx. operating temperature | up to +200 °C | up to +390 °F |
| Annealed + Aged | ||
|---|---|---|
| Approx. tensile strength | 800 – 1200 N/mm² | 116 – 174 ksi |
| Approx. operating temperature | up to +200 °C | up to +390 °F |
| Spring Temper | ||
|---|---|---|
| Approx. tensile strength | 800 – 1200 N/mm² | 116 – 174 ksi |
| Approx. operating temperature | up to +200 °C | up to +390 °F |
| Spring Temper + Aged | ||
|---|---|---|
| Approx. tensile strength | 1200 – 1600 N/mm² | 174 – 232 ksi |
| Approx. operating temperature | up to +200 °C | up to +390 °F |
The above tensile strength ranges are typical. If you require different please ask.
