Novel austenitic alloys for turbochargers

A turbocharger housing for an internal combustion engine comprising an iron-based austenitic alloy consisting of the following composition:

• C:
• about 0.2 to about 0.6 wt.-%,
• Cr:
• about 17 to about 25 wt.-%,
• Mn:
• about 8 to about 13 wt.-%,
• Ni:
• about 2 to about 6 wt.-%,
• Si:
• about 0.5 to about 3 wt.-%,
• Nb:
• about 0.2 to about 1 wt.-%,
• V:
• about 0.2 to about 1 wt.-%,
• Mo:
• about 0.2 to about 1.5 wt.-%;
• optionally one or more of the following elements in the following amounts:
• N:
• about 0.01 to about 0.6 wt.-%, in particular about 0.1 to about 0.5 wt.-%,
• W:
• about 0.01 to about 3 wt.-%,
• B:
• about 0.01 to about 0.1 wt.-%,
• Cu:
• about 0.01 to about 0.5 wt.-%;
• Ce:
• about 0.01 to about 0.3 wt.-%
• optionally other elements in a total amount of less than about 3 wt.-% (impurities);
• and
• Fe as balance
• wherein the turbocharger housing is cast from the iron-based austenitic alloy.