Plastics eye die-cast alloys

EMS-GRIVORY has been increasingly successful in identifying and replacing conventional metal alloys with plastics in the last few years. A key area being targeted by its polyamides are die-cast alloys.

EMS' polyamides have been able to improve magnesium die-cast parts by improving functionality and creating weight savings, while offering improved cycle times.
However, it is not quite as simple or straightforward as a like-for-like material swap.

Plastics offer many areas for optimisation that design engineers are able to take advantage of to maximise and exploit the full potential on offer. The control unit, pictured above, is for compressed air treatment and it uses Grivory GV-6H combined with a plastic oriented component design. The metal-like properties of the EMS polyamide provides functional integration opportunities whilst increasing tool life compared to the die-cast material.

The automotive sector, in particular, has been proactive in its move away from metals as it seeks to significantly reduce weight while satisfying the demands of economic manufacture and recycability.

As a result EMS has developed polyamides capable of operating at higher temperatures, making them suitable for under bonnet application such as air ducts, coolers for turbocharged engines, heat exchangers and throttle bodies. Its polyamides have also been used in chassis and powertrain components, including clutches and steering systems where resistance to motor oils and hydraulic fluids is essential.

Justin Cunningham

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