S-in motion^® Rear Chassis for BEVs

ArcelorMittal’s optimized lightweight steel solutions are matching the various multi-link chassis requirements based on a 2.5-tonnes SUV vehicle:

AHSS steel grades meet the subframe requirements in term of formability, durability and fatigue

• Steel grades:
  CR780Y980T-CP, HR660Y760T-CP,
  CR570Y780T-CP, HR440Y580T-FB, HR420LA
• Forming technology:
  - Tube forming / High frequency induction (HFI)
  - Cold stamping
  - Progressive die stamping
• Assembly method:
  Gaz Metal Arc Welding (GMAW)
• Comments:
  - Mass savings can be achieved thanks to the HR660Y760T-CP and CR780Y980T-CP grades
  - Porthole design is considered for the driveshaft clearance

The HR660Y760T-CP grade provides large geometrical possibilities for the upper control arm of the multilink chassis

• Steel grades:
  HR660Y760T-CP
• Forming technology:
  Progressive die stamping
• Assembly method:
  Gaz Metal Arc Welding (GMAW)
• Comments:
  - Mass savings can be achieved thanks to the higher mechanical properties of the HR660Y760T-CP grade
  - Double shell design with bush mount integrated

The HR660Y760T-CP grade provides large geometrical possibilities for the upper control arm of the multilink chassis

• Steel grades:
  HR660Y760T-CP
• Forming technology:
  Progressive die stamping
• Assembly method:
  Gaz Metal Arc Welding (GMAW)
• Comments:
  - Mass savings can be achieved thanks to the higher mechanical properties of the HR660Y760T-CP grade
  - Double shell design with bush mount integrated

The HR440Y580T-FB grade provides large geometrical possibilities for the toe link of the multilink chassis

• Steel grades:
  HR440Y580T-FB, HR420LA
• Forming technology:
  Tube forming / High frequency induction (HFI)
• Assembly method:
  Gaz Metal Arc Welding (GMAW)
• Comments:
  - The HR440Y580T-FB grade is compatible with different processes e.g stamping and tube forming
  - The toe link part is made of HR440Y580T-FB tube, welded to HR420LA bushing housing

The HR660Y760T-CP grade provides large geometrical possibilities for the lower control arm of the multilink chassis

• Steel grades:
  HR660Y760T-CP
• Forming technology:
  Progressive die stamping
• Assembly method:
  Bush mount integrated
• Comments:
  - Mass savings can be achieved thanks to the higher mechanical properties of the HR660Y760T-CP grade
  - No welds are needed thanks to the geometric capability and the hole expansion of the HR660Y760T-CP grade

High mass savings for the lower control arm are possible thanks to the HR660Y760T-CP grade

• Steel grades:
  HR660Y760T-CP
• Forming technology:
  Cold stamping
• Assembly method:
  Bush mount integrated
• Comments:
  - Mass savings can be achieved thanks to the higher mechanical properties of the HR660Y760T-CP grade
  - No welds are needed thanks to the geometric capability and the hole expansion of the HR660Y760T-CP grade

Related info

• Discover our advanced steel solutions for BEV and ICE via our 3D car configurator
• Discover our online product catalogue

Want to know more about our solutions for rear chassis? Watch this webinar to hear our experts explain why steel solutions for rear chassis enable carmakers to extend range, reduce cost, and enhance safety at the most affordable cost.