C72950 is the UNS designation for GMX 215, NGK's heat resistant copper nickel tin grade with elasticity greater than copper beryllium. With more than 50 years in high performance copper alloys, NGK Berylco supplies UK, Irish and Nordic customers through its Salford office, backed by the wider NGK Group.

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.

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.

Modern vehicles are packed with connectors, sensors and safety critical electrical parts, many of them under the bonnet where heat and vibration never let up. Automotive engineers specify NGK Berylco alloys for contact force that holds over the life of the vehicle.

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.

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 C72950 Alloy 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.