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Making Vehicles Lighter

Development of a Resin Material for Auto Parts that Trims Vehicle Weight Offers the Lightest Bumper in Its Class

Axela bumpers (Top: front bumper face bar, Bottom: rear bumper [Hatchback])

Mazda has developed a new resin material for auto parts that can maintain the same level of rigidity as conventional materials while trimming vehicle weight. The new resin enables the manufacture of thinner parts, which results in a significant reduction in the amount of material used; when used for front and rear bumpers, this trims weight by approximately 20%. In the manufacturing process, thinner parts have enabled the shortening of cooling time upon shaping, and in addition, use of CAE analysis technology has enabled optimization of material liquidity, halving the shaping time of bumpers from approximately 60 seconds to 30 seconds. This drastically reduces the amount of energy used in manufacturing.
This new-resin bumper, the lightest in its class*1, has been used for the CX-5, Atenza/Mazda6, and new Axela/Mazda3. Mazda intends to also use it for subsequent models.

  • *11,500 to 2,000cc class, as of March 2014, according to Mazda data.

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