Beryllium Copper is the most commonly utilized Copper Beryllium alloy and is notable for its highest strength and hardness compared to commercial copper alloys. C17200 alloy contains appr. 2% of beryllium and achieves its ultimate tensile strength can exceed 200 ksi, while the hardness approaches Rockwell C45. Meanwhile, the electrical conductivity is a minimum of 22% IACS in the fully aged condition.C17200 also exhibits exceptional resistance to stress relaxation at elevated temperatures.

Specifications of Beryllium Copper Wire:

1.Grade: UNS17200/CDA172, 2.1247, CW101C, CuBe2

Cu: Balance

5.Physical Properties
Density (g/cm3): 0.302Ib/in3 at 68F 
Specific Gravity: 8.36g/cm3
Melting Point（Liquidus）: 1800F
Melting Point（Solidus）: 1600F
Electrical Resistivity:: 46.2 ohms/cmil/ft@68F
Electrical Conductivity: 22%IACS@68F(heat-treated)
Thermal Conductivity : 62.0Btu ft ata 68F
Modulus Elasticity in Tension: 18500ksi
Modulus Rigidity: 7300ksi
Note:
1). the units are based upon Metric. 
2). the typical physical properties apply to age hardened products.

Mechanical property of Beryllium Copper Wire(after heat treatment):

Application of Beryllium Copper Wire:

1)Electrical Industry: Electrical Switch and Relay Blades, Fuse Clips, Switch Parts, Relay parts, Connectors, Spring Connectors, Contact Bridges, Belleville Washers, Navigational Instruments, Clips 

2)Fasteners: Washers, Fasteners, Lock Washers, Retaining Rings, Roll Pins, Screws, Bolts 

3)Industrial: Pumps, Springs, Electrochemical, Shafts, Non Sparking Safety Tools, Flexible Metal Hose, Housings for Instruments, Bearings, Bushings, Valve Seats, Valve Stems, Diaphragms, Springs, Welding Equipment, Rolling Mill Parts, Spline Shafts, Pump Parts, Valves, Bourdon Tubes, Wear Plates on Heavy Equipment.

Advantage and features of Beryllium Copper Wire:

1. High thermal conductivity

2. High corrosion resistance, especially suitable for polyoxyethylene (PVC) products mold.

3. High hardness, wear resistance and toughness, as inserts used with mould steel and aluminum can make the mold play a       highly efficient, prolong the service life.

4. Polishing performance is good, can achieve high mirror surface precision and complicated shape design.

5. Good tackiness resistance, easy to welding with other metal, easy to machining, there is no need additional heat treatment.