Home Products Alloys Copper Nickel Tin Alloy Strip BrushForm 158 BRUSHFORM® 158 BrushForm® 158 Strip (BF 158) is a high-performance, heat treatable spinodal copper-nickel-tin alloy designed to provide optimal formability and strength in conductive spring applications such as electronic connectors, switches and sensors. Our BF158 TM16 temper offers the highest strength available in a copper alloy. BF158 alloys are available in both pre-heat treated (mill hardened) and heat treatable (age hardenable) forms. To learn more about BF 158 physical and mechanical properties. sizes and tolerances, download our BF158 data sheets. ADVANTAGES OF COPPER NICKEL TIN STRIP BF 158 alloys exhibit strength and formability similar to copper beryllium Alloys 25 and 190, but they do not contain beryllium, so they can be used in applications where a non-beryllium alloy is desired. BRUSHFORM® 158 MARKETS AND APPLICATIONS Electromagnetic shielding gaskets Voice coil motor contacts SPECIFICATIONS AND STANDARDS UNS C72900, ASTM B740.