Royal DSM says a new generation of automotive exhaust gas recirculation temperature (EGRT) sensors is now being made in its Stanyl ForTii high-temperature performance polyamide 4T. With its very high temperature stability, Stanyl ForTii enables cost reduction in the production of the sensors without compromising on quality.
EGRT sensors are critical elements to improve overall vehicle performance, monitor emissions and improve fuel efficiency. Stanyl ForTii, due to its ability to withstand continuous-service temperatures up to 300 °C, allows cost savings, without sacrificing thermal or structural performance. Alternative materials for EGRT sensors include liquid crystal polymer (LCP) and polyetheretherketone (PEEK), both of which are more expensive.
In cooperation with its customers, DSM’s application development team identified the operational parameters for the EGRT application. Prototype testing demonstrated that Stanyl ForTii has the thermal performance and mechanical properties required for the demanding environment in which the sensor operates.
With the appropriate design, Stanyl ForTii can withstand a temperature as high as 325 °C on an intermittent basis and still retain all the mechanical properties required for this very demanding application. It also has the excellent chemical resistance necessary.
Stanyl ForTii is not only significantly more cost-effective than PEEK in this application, it also offers shorter molding cycle times than other alternative high performance engineering plastics. Until now, LCP and PEEK have been the default high temperature materials of choice for applications like this. Now, Stanyl ForTii will enable design engineers to specify a more economical material for very hot and aggressive environments.—Chris Scarazzo, Business Development Manager at DSM