Quench and temper corrosion resistant steel alloy and method for producing the alloy
AssigneeCRS Holdings, Inc.
InventorsDavid E. Wert, Samuel J. Kernion, Shane Para, Karl Heck
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Abstract
A quench and temper steel alloy is disclosed having the following composition in weight percent. C 0.1-0.4 Mn 0.1-1.0 Si 0.1-1.2 Cr 9.0-12.5 Ni 3.0-4.3 Mo 1-2 Cu 0.1-1.0 Co 1-4 W 0.2 max. V 0.1-0.6 Ti 0.1 max. Nb up to 0.01 Ta up to 0.01 Al 0-0.25 N 0.1-0.35 Ce 0.006 max. La 0.006 max. The balance of the alloy is iron and the usual impurities found in similar grades of quench and temper steels intended for similar use or service, including not more than about 0.01% phosphorus and not more than about 0.010% sulfur. A quenched and tempered steel article made from this alloy is also disclosed. Further disclosed is a method of making the alloy.
Claims18
A steel alloy consisting essentially of, in weight percent, about:
- C
- 0.15-0.3
- Mn
- 0.1-1.0
- Si
- 0.1-1.2
- Cr
- 9.0-12.5
- Ni
- 3.0-4.3
- Mo
- 1-2
- Cu
- 0.1-1.0
- Co
- 1-4
- W
- 0.02 max.
- V
- 0.1-0.6
- Ti
- 0.02 max.
- Al
- 0-0.25
- Nb
- 0-0.01
- Ta
- 0-0.01
- N
- 0.15-0.35
- Ce
- 0.006 max.
- La
- 0.006 max.
- the balance of the alloy is iron and impurities, wherein the impurities include not more than about 0.01% phosphorus and not more than about 0.001% sulfur.
A steel alloy consisting essentially of, in weight percent, about
- C
- 0.15-0.3
- Mn
- 0.1-0.7
- Si
- 0.5-1.2
- Cr
- 9.5-12.5
- Ni
- 3.2-4.3
- Mo
- 1.25-1.75
- Cu
- 0.1-0.7
- Co
- 2-3
- W
- 0.1 max.
- V
- 0.1-0.5
- Ti
- 0.01 max.
- Nb
- up to 0.01
- Ta
- up to 0.01
- Al
- 0.25 max.
- N
- 0.15-0.30
- Ce
- 0-0.006
- La
- 0-0.005
- and the balance is iron and impurities, wherein the impurities include not more than about 0.005% phosphorus and not more than about 0.001% sulfur.
A structural component for an aerospace vehicle wherein the component is made from an alloy consisting essentially of, in weight percent, about
- C
- 0.15-0.3
- Mn
- 0.1-0.7
- Si
- 0.5-1.2
- Cr
- 9.5-12.5
- Ni
- 3.2-4.3
- Mo
- 1.25-1.75
- Cu
- 0.1-0.7
- Co
- 2-3
- W
- 0.1 max.
- V
- 0.1-0.5
- Ti
- 0.01 max.
- Nb
- 0.01 max.
- Ta
- 0.01 max.
- Al
- 0.25 max.
- N
- 0.15-0.30
- Ce
- 0-0.006
- La
- 0-0.005
- and the balance is iron and impurities, wherein the impurities include not more than 0.005% phosphorus and not more than 0.0005% sulfur.
Dependencies are inferred from the claim text.