Brushform 158 Copper-Nickel-Tin Foil Gauge Alloys

As the consumer electronics industry designs smaller, lighter devices to perform faster and better with constantly increasing capabilities, the materials used to make electronic connectors, switches and sensors need to enable and enhance these products. At Materion, we're focused on staying ahead of the industry's needs, and our high-performance BrushForm® 158 (BF 158) strip alloys are engineered specifically to meet the requirements of next-generation electronic devices that are being designed.

Our high-strength spinodally-hardened copper-nickel-tin strip alloys provide optimal performance in foil gauges. They provide excellent flatness and
stiffness coupled with high resistance to vibration, fatigue, and impact
loading. This makes these materials ideal for voice coil motor springs in optical image stabilization systems in devices such as smartphones, tablets and cameras. They offer higher strength than most other copper alloys, but do not contain beryllium, so they can be used when beryllium-free alloys are desired. The materials are RoHS compliant and infinitely recyclable.

BF 158 alloys are available in both pre-heat treated (mill hardened) and heat treatable (age hardenable) strip forms.

BF 158 strip is engineered to provide optimal formability and increased strength requirements for voice coil motor and optical image stabilizing applications in smartphones and electromagnetic shielding gaskets in electronic devices. BF 158 strip offers substantially higher strength in foil gauges as thin as 0.001” (0.025 mm) for greater design flexibility.

These alloys are available in multiple tempers to meet different application requirements -- from higher strength to better formability.

BrushForm alloys outperform copper-beryllium and copper-titanium in applications with high strength/high temperature requirements, and they have good corrosion resistance, which is important for water-resistant devices.

Our copper-nickel-tin strip is specified to UNS C72900, ASTM B 740.