This alloy has good electrical conductivity and high strength relative to other alloys.  It has good fatigue strength and stress relaxation resistance.  Alloy M25 increases tool life, resulting in less overall equipment down-time, and ultimately, a lower total machining cost.

Form
        Wire, Rod
Application
        Machined male or female contacts in the electronics, aircraft and automotive industries. 
        The production of turned parts for the watch industry.
        Contact for circular connectors
        Coaxial connectors
Chemical Composion         Beryllium : 1.80-2.0%
        Lead : 0.20-060%
        Cobalt+Nickel+Iron : 0.60% max
        Cobalt+Nickel : 0.20% 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 – 22-28% IACS (12.8-16.3 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        Please contact office at +66 2 728 0150.