IMPHY® SUPRA 50: Combining Passenger Comfort and Energy Savings

Driven by a growing preference for automatic transmission vehicles, the automotive industry is increasingly turning towards innovative torque sensors for thermal and electric cars. Aperam IMPHY® SUPRA 50 offers the high permeability and high saturation induction levels this application needs.  

Although torque sensors use a variety of methods to measure torque, they all measure the ‘force’ being used to turn a specific element. In Electric Power Steering (EPS) systems, which consist of an electric motor and a control unit, torque sensors provide information on the steering torque. They do this by precisely measuring  the torsion bar angle needed for a particular steering movement.

EPS systems offer a number of advantages. First and foremost, they allow drivers to steer the wheel using minimal manual force. EPS systems are also lightweight, easy to maintain, and offer a high level of energy efficiency – not to mention their comfort, safety, and fuel-saving benefits.

One of the key components of an EPS system is the stator, the stationary part of the electric motor’s rotary system. Aperam’s IMPHY® SUPRA 50, a FeNi48 alloy, provides the high permeability and high saturation induction levels that these stators need.

With IMPHY® SUPRA 50, stators benefit from:

  • Optimized magnetic output resulting in a lighter device
  • More efficient steering due to low losses
  • A low coercive field and high permeability means increased precision
  • Unique physicochemical properties that result in easy implementation  

In addition to its use with stators, our IMPHY® SUPRA 50 grade, along with our PERMIMPHY (Ni80FeMo5) and INVAR®M (Ni36Fe) grades, are all well-suited for use in the collector too. 

Marlène Baussac
Business Manager, Electrical Engineering