Claims
- 1. A wrought and annealed austenitic stainless product in the form of a plate, sheet, strip, bar or rod having
- a galling resistance of at least 40 ksi stress when rotated against itself by the test described herein, a stress corrosion resistance of greater than 90 hours to failure at 50-60 ksi stress in boiling magnesium chloride (42% concentration), a Huey rate of not greater than 0.005 inches per month after reheating at 850.degree. C. for a time up to four hours, and good high temperature oxidation resistance, consisting essentially of by weight percent, about 14% to about 16% chromium, about 14% to about 17% nickel, 0.5% to about 3.0% manganese, about 4.0% to about 5.5% silicon, about 0.03% to about 0.10% carbon, about 0.03% maximum nitrogen, about 0.05% maximum phosphorus, about 0.05% maximum sulfur, and balance essentially iron except for incidential impurities.
- 2. The product claimed in claim 1, wherein molybdenum, copper, tungsten, columbium, vanadium and titanium are restricted to residual amounts.
- 3. An article of ultimate use fabricated from wrought and annealed austenetic stainless steel having a galling resistance of at least 40 ksi stress when rotated against itself by the test described herein, a stress corrosion resistance of greater than 90 hours to failure at 50-60 ksi stress in boiling magnesium chloride (42% concentration), a Huey rate of not greater than 0.005 inches per month after reheating at 850.degree. C. for a time up to four hours, and good high temperature oxidation resistance, consisting essentially of by weight percent about 14% to about 16% chromium, about 14% to about 17% nickel, 0.5% to about 3.0% manganese, about 4.0% to about 5.5% silicon, about 0.03% to about 0.10% carbon, about 0.03% maximum nitrogen, about 0.05% maximum phosphorus, about 0.05% maximum sulfur, and balance essentially iron except for incidential impurities.
- 4. A cast and annealed article of ultimate use having a galling resistance of at least 40 ksi stress when rotated against itself by the test described herein, a stress corrosion resistance of greater than 90 hours to failure at 50-60 ksi stress in boiling magnesium chloride (42% concentration), a Huey rate of not greater than 0.005 inches per month after reheating at 850.degree. C. for a time up to four hours, and good high temperature oxidation resistance, consisting essentially of, by weight percent about 14% to about 16% chromium, about 14% to about 17% nickel, 0.5% to about 3.0% manganese, about 4.0% to about 5.5% silicon, about 0.03% to about 0.10% carbon, about 0.03% maximum nitrogen, about 0.05% maximum phosphorus, about 0.05% maximum sulfur, and balance essentially iron except for incidential impurities.
- 5. A welded article of ultimate use fabricated from wrought and annealed austenitic stainless steel having a galling resistance of at least 40 ksi stress when rotated against itself by the test described herein, a stress corrosion resistance of greater than 90 hours to failure at 50-60 ksi stress in boiling magnesium chloride (42% concentration), a Huey rate of not greater than 0.005 inches per month after reheating at 850.degree. C. for a time up to four hours, and good high temperature oxidation resistance, consisting essentially of, by weight percent, about 14% to about 16% chromium, about 14% to about 17% nickel, 0.5% to about 3.0% manganese, about 4.0% to about 5.5% silicon, about 0.03% to about 0.10% carbon, about 0.03% maximum nitrogen, about 0.05% maximum phosphorus, about 0.05% maximum sulfur, and balance essentially iron except for incidential impurities.
Parent Case Info
This is a division of application Ser. No. 751,022 filed Dec. 14, 1976, now U.S. Pat. No. 4,099,967.
US Referenced Citations (9)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1275007 |
May 1972 |
GBX |
Non-Patent Literature Citations (1)
Entry |
Steel Products Manual, 12/74, pp. 21-22. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
751022 |
Dec 1976 |
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