High heat resistant polyamide closes gap to polyphthalamides

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  • New grade features very good heat ageing resistance up to 230°C
  • Megatrend of downsizing have raised charged-air temperatures
  • Applications: charged air cooler end caps, charged-air pipes, resonators or connectors

To date there has been a gap with regard to application temperatures, between heat-stabilised PA66/6 grades and high heat stabilised polyphthalamides. A new high heat stabilised polyamide grade from company EMS-Grivory closes this gap and completes the product portfolio for the temperature range from 150°C to 250°C.

Megatrend of downsizing have raised charged-air temperatures

The megatrend of downsizing is continuing in the automotive segment. Engines with smaller cylinder capacity and increasingly effective turbo charging have raised charged-air temperatures to a permanent 210°C with peaks of 230°C at pressures of 3.3 bar. In comparison, ten years ago, these temperatures were maximum 200°C at pressures of around 1.5 bar. With Grilon TSG-W3, EMS-Grivory has introduced a further material, in particular for applications in charged-air systems.

Resonator for PSA

Resonator for PSA made of Grilon TSG-354 W2 (source: EMS Grivory)

Triple-Six-Polyamides cover 150°C to 210°C temperature range

The tried and proven Triple-Six-Polyamides Grilon TSG-W and TSG-W2 can be used to cover the 150 °C to 210 °C temperature range. Up to 190 °C, Grilon TSG-W can be used without limits; at temperatures up to 210 °C, Grilon TSG-W2 is used.

In the past, these two materials were used to realize challenging applications in charged-air systems. The Mann+Hummel Company, for example, uses Grilon TSG-35/4 W2 for selected resonators, corner connectors or charged-air cooler end caps for PSA (Peugeot Citroën). The EMS materials offer not only very good resistance to temperature, but also good surface quality and simple processability. As Grilon TSG-35/4 W2 replaces PA46 in these applications, additional cost savings can also be achieved.

New grade features very good heat ageing resistance up to 230°C

Due to the steadily increasing requirements on charged-air systems in particular, EMS-Grivory has developed the third generation in the TSG-W series: Grilon TSG-W3. This new material has very good heat ageing resistance up to 230°C. Grilon TS XE 16002 (TSG-35/4 W3) for example, still maintains 75% of property values for tensile strength at break after 3000 hours at 230°C. This means that even at 230 °C it has heat ageing resistance equivalent to that of high heat stabilised polyphthalamides.

Applications: from charged air cooler end caps to connectors

Its good surface quality is identical to the Grilon TSG-W2 grades. This reduces pressure loss in the charged air system and makes post-treatment on sealing sections unnecessary. In this way, Grilon TSG-W3 is predestined for applications in charged-air systems such as, for example, charged air cooler end caps, charged-air pipes, resonators or connectors.

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