C17510 (CuNi2Be / Berylco 14): high-conductivity beryllium copper alloy

The C17510 alloy, also known as CuNi2Be (Berylco 14 or B14), contains a lower beryllium content (0.6% maximum). It offers excellent electrical conductivity. Through a proprietary manufacturing process developed and mastered by NGK Berylco France, the B14 S delivers outstanding formability. Although supplied in the mill-hardened condition, the B14 S combines excellent electrical conductivity with high mechanical strength (typical values: 55% IACS and 950 MPa). No further heat treatment of stamped parts is therefore required, reducing production costs and eliminating any risk of distortion in finished components.

This alloy stands out for its unique combination of high conductivity, mechanical strength, and formability — a performance level unmatched by any other copper alloy in this price range.

Resistance Welding. The high electrical and thermal conductivity of C17510 makes it the preferred material for resistance welding electrodes, welding tips and welding machine arms. See our energy applications.

High-Frequency Electronics. C17510 strips and wires are used for contacts and connectors where conductivity takes priority over mechanical strength, particularly in telecommunications equipment and radio-frequency components. Discover our electronics applications.

Automotive & Appliances. Contact springs, sensors and components requiring efficient thermal dissipation: C17510 is specified wherever conductivity and formability must be combined. See our automotive applications.

The C17510 alloy (B14) is available in strip, rod, wire, and plate form.

Choosing NGK Berylco means choosing a beryllium copper alloy expert and industry leader with over fifty years of experience.

We apply the most advanced heat treatment processes at our facility in Couëron, France, to deliver a unique combination of properties in the C17510 alloy (B14), meeting the most demanding requirements of our customers.