Spring temper beryllium copper is supplied for parts that need high elasticity straight from the coil. It's ideal for stamped contacts and clips. NGK Berylco is part of the NGK Group, with NGK Berylco UK in Salford, NGK Berylco France in Couëron near Nantes and NGK Deutsche Berylco in Germany.

Beryllium copper, also called beryllium bronze, adds between 0.4% and 2% beryllium to copper, with small additions of nickel, cobalt, iron, aluminium or lead. After heat treatment it reaches tensile strengths up to 1500 N/mm² and hardness up to 450 HV, while conductivity runs from around 22% to 70% IACS depending on grade. It is non-magnetic, non-sparking, corrosion resistant and works from cryogenic to elevated temperatures.

Choosing a beryllium copper grade comes down to balancing strength, conductivity and how the part will be made. C17200 is the all-rounder. C17300 suits screw machined parts. C17510 is the pick when current carrying matters most. Mill hardened strip saves a heat treatment step, while solution annealed material gives the most freedom to form complex shapes before hardening.

Electronics designers need spring contacts that stay springy, conduct well and survive millions of cycles. Connectors, switches and relays all depend on materials that keep their contact force, and that's exactly where NGK Berylco alloys are specified.

The core NGK Berylco grades are C17200 (CuBe2, Berylco 25) for high strength, C17300 (CuBe2Pb, Berylco 33/25) for free machining and C17510 (CuNi2Be, Berylco 14) for high conductivity. They are supplied as strip, wire, rod and plate or block, plus chill vents and non-sparking safety tools. Material can be supplied annealed or cold worked for forming and heat treated afterwards, or mill hardened in Type-B and Type-S tempers ready to use.

Quality is not left to chance. NGK Berylco holds ISO 9001, EN 9100 for aerospace, ISO 14001 and ISO 45001, and runs its own testing and inspection laboratory alongside an active R&D programme.

To discuss Spring Temper Beryllium Copper, contact NGK Berylco UK on +44 (0)161 745 7162 or email enquiries@ngkberylco.co.uk. The Salford team covers the UK, Ireland and the Nordic countries.