NGK Berylco's GMX copper-nickel-tin range is a family of beryllium-free alloys built for demanding specifications on temperature resistance, friction and corrosion. Grades include GMX 96 (C72700), GMX 215 (C72950) and GMX 158 (C72900), supplied as strip and as rod and wire.

Copper-nickel-tin is worth a look when a design needs strength and heat resistance but conductivity is less critical, or when a beryllium-free material is preferred. For high current contacts, beryllium copper still leads. For springs that run hot, bearings and bushings, and parts exposed to friction and corrosion, the GMX grades often come out on top. NGK Berylco can compare both families against your specification.

Watchmaking needs tiny, precise components with stable spring properties and good corrosion resistance. Fine wire and strip from NGK Berylco suit the small, demanding parts found in quality timepieces.

GMX 96 offers very high mechanical strength and excellent resistance to stress relaxation. GMX 215, an NGK exclusive, brings thermal stability and heat resistance above 200 °C, with elasticity that exceeds copper-beryllium alloys. Across the range, the alloys combine mechanical strength, thermal stability, corrosion resistance and friction performance, though electrical conductivity is lower than the Berylco beryllium copper grades.

Buyers in regulated sectors need paperwork they can trust. NGK Berylco is certified to ISO 9001, EN 9100, ISO 14001 and ISO 45001, with a dedicated laboratory and a product compliance programme behind its alloys.

For Copper Nickel Tin for Watchmaking from a supplier with real metallurgical know-how, get in touch with NGK Berylco UK, Houston Park, Montford Street, Salford, M50 2RP. Call +44 (0)161 745 7162 or email enquiries@ngkberylco.co.uk.