A new ferritic stainless steel with improved thermo-mechanical fatigue resistance for exhaust parts

Over the past few years, car manufacturers have been considering ever higher service temperatures for the engine in order to comply with the constraints of depollution standards. The requirements in terms of exhaust gas temperature could easily reach and overtake the limits of common stainless steel grades used for such applications in the coming years.A new ferritic stainless steel – named K44X – with increased high temperature resistance has...