Stainless steel alloys, turbocharger components formed from the stainless steel alloys, and methods for manufacturing the same

A turbocharger turbine component comprising:

• an austenitic stainless steel alloy, wherein the austenitic stainless steel alloy comprises, by weight:
• 20.0% to 21.5% chromium;
• 8.5% to 10.0% nickel;
• 4.6% to 4.9% manganese;
• 0.5% to 1.0% silicon;
• 0.4% to 0.5% carbon;
• 0.2% to 0.3% nitrogen;
• less than 0.03% phosphorous;
• and
• a balance of iron with inevitable/unavoidable impurities,
• niobium, molybdenum, vanadium, copper, and tungsten are excluded from the alloy beyond impurity levels, and wherein an oxide containing boron is excluded from the alloy.

A method of making a turbocharger turbine component comprising forming the turbocharger turbine component using an austenitic stainless steel alloy, wherein the austenitic stainless steel alloy comprises, by weight:

• 20.0% to 21.5% chromium;
• 8.5% to 10.0% nickel;
• 4.6% to 4.9% manganese;
• 0.5% to 1.0% silicon;
• 0.4% to 0.5% carbon;
• 0.2% to 0.3% nitrogen;
• less than 0.03% phosphorous;
• and
• a balance of iron with inevitable/unavoidable impurities, niobium, molybdenum, vanadium, copper, and tungsten are excluded from the alloy beyond impurity levels, and wherein an oxide containing boron is excluded from the alloy.