Beryllium-free copper alloy unveiled

Ampco Metal has introduced a copper-nickel-silicone-chromium alloy developed as an alternative to beryllium copper for industrial applications requiring a combination of strength and high thermal conductivity.

These unique properties of AMPCOLOY 944 are attained through specially-developed and proprietary manufacturing processes and complex alloy compositions.

AMPCOLOY 944 provides a balance between an average hardness of 28HRC and a thermal conductivity of 156W/m.K, 5 to 6 times greater than P-20 tool steel, 6 to 7 times greater than H-13 tool steel and electrical conductivity of approx. 35% IACS.

Ampco says customers have reduced both material scrap and machining time. Typical applications include mould tooling for plastics processing, highly suitable for the injection and blow mould inserts for a wide range of plastics materials due to the alloy very good corrosion resistance to PVC resins as well as excellent results in thermoforming.

Higher hardness also lengthens service life of the mould and lowers machining and production costs, as it requires no additional heat treatment. It can be used for applications demanding higher hardness levels as cores, core inserts, cavities-inserts, runner-less moulding systems, hot runner nozzles, core pins, blow pins, ejector sleeve core combinations, sprue bushings, neck and tail pinch offs.

Justin Cunningham

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