Brush 60® UNS Number C17460
Brush 60® by Materion Brush Performance Alloys is an innovative high conductivity copper beryllium strip alloy that is specifically engineered to meet today’s demanding electrical and mechanical connector requirements. Brush 60 provides a material solution for those designers dealing with the issues of contact reliability and end-of-life performance. Elevated temperatures from increased power requirements can result in stress relaxation and a decline in contact normal force as a result of exposure to elevated temperature for a prolonged period of time. This degradation of contact force leads to an increase in contact resistance, greater signal distortion, higher impedance and signal propagation delay – all unacceptable conditions for optimized contact performance. Brush 60 exhibits outstanding stress relaxation characteristics, and are able to retain a higher normal force over the life of the connector. In addition, it is a mill hardened alloy, and uses “lean” metallurgy and advanced processing techniques to satisfy these performance requirements while still meeting the cost requirements of the most demanding design.
Markets and Applications for Brush 60
High reliability connectors
Computer and telecomm applications
Brush 60 Chemical Composition
Beryllium – 0.15-0.50%
Nickel – 1.0-1.4%
Copper – balance
Brush 60 Physical Properties
Elastic Modulus - 20 x 106 psi (138 Gpa)
Density - 0.318 lb/in3 (38.8 g/cm3)
Poisson's Ratio - 0.3
Relative Magnetic Permeability - <1.01
Electrical Conductivity – 50 min.% IACS (29.1 min. MS/m)
Thermal Conductivity 70°F / 20°C - 128 BTU/ft•hr•°F (225 W/m•K)
Coefficient of Thermal Expansion - 9.8 ppm/°F (17.6 ppm/°C)
Specific Heat (Heat Capacity) 70°F / 20°C - 0.08 BTU/lb•°F (335 J/kg K)
Specific Heat (Heat Capacity) 200°F / 100°C - 0.091 BTU/lb•°F (381 J/kg K)
Melting Range - 1880 - 1960 °F (1030 - 1070 °C)
Brush 60 Mechanical Properties
Mechanical properties may vary by product size, form and temper. Please see individual data sheets for values.
Available Forms, Sizes and Tolerances ofBrush 60
Brush 60 is available in strip form. See data sheet for sizes and tolerances.
Applicable Specifications & Standards for Brush 60
Strip – ASTM B 768, B 888
Resources and Related links
Click here to learn more about Brush 60, and other high performance alloy solutions, by contacting our technical service professionals at Materion Brush Performance Alloys today.