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  • Lightweight chassis for transport trailers

Trailtech lightens the load

ArcelorMittal’s Trailtech project was started in response to a request from one of our clients who wanted to create a new lightweight chassis for their transportation trailers. In response, ArcelorMittal’s R&D Industry team developed the generic Trailtech solution for road trailers.

Trailtech uses two of the high strength low alloy steels from our Amstrong® range: Amstrong® 500MC and Amstrong® Ultra 700MC. The carbon-manganese steel S275JR is also used for the wheel base. (By contrast, the reference trailer is almost completely built with S275JR, a classic structural steel.)

Both Amstrong® steels combine high strength, good formability and guaranteed low temperature toughness. The high yield strength of both grades makes it possible to achieve a significant decrease in thickness. For example, by utilising Amstrong® 500MC it was possible to reduce the thickness of the bottom cross-beams of the chassis from 8.6 to just 4 mm. Amstrong® Ultra 700MC was used for the exterior beams where thickness was reduced by half.

With their high tensile strength, ArcelorMittal’s high strength low alloy grades are an excellent choice when saving weight is a priority. The thinner, lighter high strength low alloy steels result in lower processing costs as thinner steel can be welded faster. The cost of transporting the lighter finished trailers is also reduced.

Overall, ArcelorMittal’s engineers were able to reduce the weight of the Trailtech chassis by 39% compared to the reference chassis. Material costs were 29% lower as less steel was used to create the new chassis. The high-end Trailtech solution has the same technical performance as the reference chassis, but with improved fuel-economy and better environmental performance.

ArcelorMittal estimates fuel savings of between 0.4 and 0.6 litres per 100 kilometres can be achieved. Assuming the trailer travels an average of 150,000 km each year that equates to around 700 litres of fuel savings.

Based on average use, CO2-eq emissions are reduced by 900 kg each year. By utilising the Trailtech solution, ArcelorMittal estimates that operators should reduce costs by around €4,500 a year per trailer.