This alloy features good stress relaxation resistance and high fatigue strength.  It is also non-magnetic and non-galling.
Form
        Strip, Wire, Rod, Bar, Plate, Tube

 

Application
        Burn-in and test socket contacts
        Computer processor socket contacts
        Electromagnetic shielding gaskets
        Pressure sensor bellows
        Aerospace
        Oil and Gas

Chemical Composion
        Beryllium : 1.80-2.00
        Nickel : 0.20 min
        Cobalt+Nickel+Iron : 0.60 max
        Copper : Balance

Physical Properties
        Elastic Modulus - 19 106 psi (131 Gpa)
        Density - 0.302 lb/in3  (8.36 g/cm3)
        Poisson's Ratio -    -0.3 
        Relative Magnetic Permeability - <1.01
        Electrical Conductivity – 22-30% IACS (12.8-17.5 MS/m)
        Thermal Conductivity 70°F / 20°C - 60 BTU/ft•hr•°F (105 W/m•K)
        Thermal Conductivity 200°F / 100°C - 75 BTU/ft•hr•°F (130 W/m•K)
        Coefficient of Thermal Expansion - 9.7 ppm/°F   (17.5 ppm/°C)
        Specific Heat  (Heat Capacity) 70°F / 20°C - 0.086 BTU/lb•°F  (360 J/kg K)
        Specific Heat  (Heat Capacity) 200°F / 100°C - 0.097 BTU/lb•°F  (406 J/kg K)
        Melting Range -  1600 - 1800 °F (870 - 980 °C)

Mechanical Properties
        Mechanical properties may vary by product size, form and temper.

Available Sizes and Tolerances
        Strip is available in widths ranging from 0.050 in to 16 in (1.27 mm to 452.7 mm), and in thicknesses ranging from 0.002in to 0.188in (0.05 mm to 4.77 mm). Other form, please contact office at +66 2 728 0150