LANXESS and Hebei Techron cooperate in development plastics transmission cover for leading automaker

  • Lightweight solution achieves around 40% weight reduction
  • Focus on material characteristics and optimized costs
Smart solution gear box side cover made from the Durethan® BKV35H2.0 polyamide 6 compound is part of cost saving solution for automotive under-the-hood application

Shanghai, December 8, 2021Specialty chemicals company LANXESS and auto parts maker Hebei Techron have jointly developed the first transmission side cover made from polyamide 6 (PA6) to be used by a world-renowned SUV and pickup manufacturer. Compared to the original metal version of the part, a die cast aluminum cover, the companies were able to substantially increase the degree of integration of different functional features. LANXESS was invited to join the metal replacement project back in June 2017 by the automaker.


LANXESS lightweight design and cost saving solution

Metal replacement in automotive under the hood (UTH) applications is one of the core development segments of LANXESS’s High Performance Materials (HPM) business unit. Since the introduction of the plastic injection process several decades ago, the usage of plastics in UTH saw a rapid growth. It is a highly cost-effective and efficient one step process. “With the new plastic side cover, we benefited from the larger degree of design freedom in injection molding and successfully overcame design restrictions of the die cast product,” Add Tsui, project manager at the High Performance Materials (HPM) business unit, said.


LANXESS advanced cost saving solutions

Over the past three years, the world has been facing polyamide 6.6 (PA66) shortages. In response, the LANXESS HiAnt® team, which provides a comprehensive set of services for customers at all stages of component development, validated the feasibility of replacing polyamide 6.6 (PA66) with polyamide 6 (PA6). LANXESS had already successfully supported Techron on its first plastic side cover project. Following that, the companies joined hands to find a solution that provides a product of the same quality but with comparatively lower cost.  In this case, the material of choice was Durethan® BKV35 H2.0, a PA6 with 35% glass fibers offering the same mechanical performance as PA66, yet adding a wider processing window with a more pleasing surface quality in addition to excellent resistance against transmission oil. “Thinking comprehensively and acting fast benefitted my group to take the right action in responding to changing market situations,” Hu Wu Ping, General Manager at Hebei Techron, said.


State of the art material alternative

By increasing the glass fiber content, it was possible to achieve all required mechanical properties and dimensional requirements even without having to make any changes to the existing mold. The transmission cover produced in this way was sent to the car manufacturer for evaluation, passed all necessary tests and was released for production. The solution did not only achieve a significant optimization in component costs without any loss of functionality, but also assured reliable raw material supply by using PA6 as input material.


Support in component design and part validation

Apart from high-tech thermoplastics, LANXESS offers extensive know-how and experience, as well as state-of-the-art design and simulation methods. Its experts actively contribute their engineering know-how to customer projects. HiAnt®, the integrated service package for innovative lightweight solutions, aims to help customers achieve maximum performance while minimizing weight. To pursue optimized design, mathematical simulation methods are outstanding instruments for the design and optimization of parts and they deliver fairly accurate statements on part behavior. When it comes to making a definitive statement on the functional capability of parts, however, it is generally still necessary to conduct practice-oriented tests on prototypes.


For this reason, most OEMs (original equipment manufacturers) prescribe stringent corresponding acceptance tests and specifications. LANXESS has a state-of-the-art test laboratory and the corresponding specialist employees, and can offer an extensive range of testing facilities.


About Hebei Techron Automotive Co., Ltd.

Hebei Techron Automotive Co., Ltd was established in 2005, focus on research and manufacturing of transmission oil filter and related plastic parts. It has more than 200 employees, 30 mold manufacturing equipment, more than 200 sets of molds output annually, 60 units of injection molding machine, 20 oil filters and automated assembly line, which can achieve an annual output of 500W transmission parts production capacity.



LANXESS is a leading specialty chemicals company with sales of EUR 6.1 billion in 2020. The company currently has about 14,900 employees in 33 countries. The core business of LANXESS is the development, manufacturing and marketing of chemical intermediates, additives, specialty chemicals and plastics. LANXESS is listed in the leading sustainability indices Dow Jones Sustainability Index (DJSI World and Europe) and FTSE4Good.



On January 31, 2005, the company was initially listed on the Frankfurt Stock Exchange and LANXESS Chemical (China) Co., Ltd. officially started operations. LANXESS now has 13 subsidiaries, 6 R&D centers and 7 production sites with around 1,200 employees in Greater China. LANXESS works closely with its local partners to develop market-oriented solutions that meet local market needs.


Forward-Looking Statements

This company release contains certain forward-looking statements, including assumptions, opinions, expectations and views of the company or cited from third party sources. Various known and unknown risks, uncertainties and other factors could cause the actual results, financial position, development or performance of LANXESS AG to differ materially from the estimations expressed or implied herein. LANXESS AG does not guarantee that the assumptions underlying such forward-looking statements are free from errors, nor does it accept any responsibility for the future accuracy of the opinions expressed in this presentation or the actual occurrence of the forecast developments. No representation or warranty (expressed or implied) is made as to, and no reliance should be placed on, any information, estimates, targets and opinions, contained herein, and no liability whatsoever is accepted as to any errors, omissions or misstatements contained herein, and accordingly, no representative of LANXESS AG or any of its affiliated companies or any of such person's officers, directors or employees accept any liability whatsoever arising directly or indirectly from the use of this document.


Information for editors:

All LANXESS news releases and accompanying photo, video and audio materials can be found at www.lanxess.cn, www.weibo.com/lanxess, or LANXESS’ official WeChat account: LANXESS_china


Yu Fiona

Yu Fiona
Corporate Communications

Phone: +86 21 6109 6666

Fax: +86 21 6109 6717

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