The opportunities for hardened stainless steel in the automotive industry. Many components in vehicle construction are exposed to heavy stresses. Abrasive wear, cold welding and the fatigue of critical points are the problem areas where car manufacturers and suppliers require high-quality solutions to increase the service lives of the affected components. The BORINOX® process can contribute to the increase in resistance of the stainless-steel materials used in many applications. We present a few frequently affected components in the following.


  • The corrosion resistance of the materials used remains intact
  • The coefficient of friction can be reduced. This is particularly important for Inconel® cup springs
  • Parts can also be partially hardened.

What advantages are offered by the chardening of stainless steel?

Hardening of stainless steel is useful for turbochargersThe increase in the surface hardness makes components in the areas specified more resistant to various types of wear. This includes with regard to automotive applications, abrasive wear, cold welding and signs of fatigue. The following advantages for manufacturers and developers result:

Hardening stainless steel for turbocharger construction

Damage from foreign bodies on the compressor wheel and on the compressor are a frequent problem in turbocharger construction. Materials loosened from the crankcase ventilation can lead to damage. Abrasive wear on the compressor blades is also a frequent problem. Impacts can be smoke formation, power loss, noise formation and damage to the turbocharger cooler. Additional affected parts can be the turbine wheel and turbine housing. Many of these problems can be reduced or completely eliminated by hardening the components used. Turbochargers are not generally wear parts and should last the life of the engine if routinely inspected and serviced. Components treated with BORINOX® contribute to this goal. Particularly promising is the use of hardened stainless steel for shift linkages in and on the turbocharger.

Additional relevant products in the automotive industry

Engine parts can be hardenend with BorinoxBearing pins are frequently affected by signs of wear due to friction corrosion. Bearing pins are used to connect various components together and are often affected by abrasion and surface breakdown, depending on the function. Similar problems can also occur in other products which are used to connect components. Link pins, link plates, cup springs, and transmission rods can be mentioned here. 

These materials can be hardened with the BORINOX® process. 

A few typically used materials can be specified for these applications. They are 1.4301 (AISI 304), 1.4307, 14404 (AISI 316L) and Inconel®, which are often used in these areas and can be considered for processing with BORINOX®.

Further Applications: