Ferritic stainless steel alloys and turbocharger kinematic components formed from stainless steel alloys
A terrific stainless steel alloy and turbocharger kinematic components are provided. A ferritic stainless steel alloy includes or consists of, by weight, about 20% to about 35% chromium, less than about 2% nickel (i.e., from 0% to about 2%), about 1% to about 4% carbon, about 1.5% to about 1.9% silicon, less than about 0.4% nitrogen (i.e., from 0% to about 0.4%), about 0.5% to about 15% molybdenum, less than about 1% niobium (i.e., from 0% to about 1%) and a balance of iron, and other inevitable/unavoidable impurities that are present in trace amounts. The turbocharger kinematic components are made at least in part using this stainless steel alloy.
1. A ferritic stainless steel alloy, comprising, by weight:
20% to 35% chromium,
0% to 2% nickel,
0.5% to 15% molybdenum,
1% to 4% carbon,
1.6% to 1.8% silicon,
0% to 0.4% nitrogen,
0% to 1% niobium, and
a balance of iron, and other inevitable/unavoidable impurities that are present in trace amounts, and wherein vanadium is excluded from the alloy beyond impurity levels.
2. The ferritic stainless steel alloy of claim 1 , comprising 22% to 33% chromium.
3. The ferritic stainless steel alloy of claim 1 , comprising 0.1% to 1.5% nickel.
4. The ferritic stainless steel alloy of claim 1 , comprising 0.05% to 0.7% niobium.
5. The ferritic stainless steel alloy of claim 1 , comprising 2% to 13% molybdenum.
6. The ferritic stainless steel alloy of claim 1 comprising 1.5% to 3.5% carbon.
7. The ferritic stainless steel alloy of claim 1 , comprising 0.05% to 0.3% nitrogen.
8. The ferritic stainless steel alloy of claim 1 , further comprising sulfur in an amount of less than 0.01% and phosphorous in an amount of less than 0.04%.
9. A turbocharger kinematic component comprising, at least as a part of its constituency:
a ferritic stainless steel alloy, wherein the ferritic stainless steel alloy comprises, by weight:
20% to 35% chromium,
0% to 2% nickel,
0.5% to 15% molybdenum,
1% to 4% carbon,
1.6% to 1.8% silicon,
0% to 0.4% nitrogen,
0% to 1% niobium, and
a balance of iron, and other inevitable/unavoidable impurities that are present in trace amounts, and wherein vanadium is excluded from the alloy beyond impurity levels.
10. The turbocharger kinematic component of claim 9 , wherein the ferritic stainless steel alloy comprises 22% to 33% chromium.
11. The turbocharger kinematic component of claim 9 , wherein the ferritic stainless steel alloy comprises 0.1% to 1.5% nickel.
12. The turbocharger kinematic component of claim 9 , wherein the ferritic stainless steel alloy comprises 0.05% to 0.7% niobium.
13. The turbocharger kinematic component of claim 9 , wherein the ferritic stainless steel alloy comprises 2% to 13% molybdenum.
14. The turbocharger kinematic component of claim 9 , wherein the ferritic stainless steel alloy comprises 1.5% to 3.5% carbon.
15. The turbocharger kinematic component of claim 9 , wherein the ferritic stainless steel alloy comprises 0.05% to 0.3% nitrogen.
16. The turbocharger kinematic component of claim 9 , wherein the ferritic stainless steel alloy comprises sulfur in an amount of less than 0.01% and phosphorous in an amount of less than 0.04%.
17. The turbocharger kinematic component of claim 9 , wherein the turbocharger kinematic component comprises a shaft, bushing, or valve.
18. A turbocharger comprising the turbocharger kinematic component of claim 9 .