Claims
- 1. Austenitic stainless steel in particulate form adapted for compacted, pressed, and/or sintered products, consisting essentially of, in weight percent, about 13% to about 19% chromium, about 13% to about 19% nickel, 0.5% to about 4% manganese, 3.5% to about 7% silicon, up to about 0.15% carbon, less than 0.04% nitrogen, about 0.03% maximum phosphorus, about 0.05% maximum sulfur, and balance iron except for incidental impurities.
- 2. Powder-filled tube-like article which upon melting and solidification provides an austenitic stainless steel consisting essentially of, in weight percent, about 13% to about 19% chromium, about 13% to about 19% nickel, 0.5% to about 4% manganese, 3.5% to about 7% silicon, up to about 0.15% carbon, less than 0.04% nitrogen, about 0.05% maximum phosphorus, about 0.05% maximum sulfur, and balance iron except for incidental impurities.
- 3. Austenitic stainless steel in particulate form adapted for a compacted, pressed, and/or sintered product, said product 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 inch per month after reheating at 850.degree. C. for a time up to four hours, and good high temperature oxidation resistance, said steel 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 iron except for incidental impurities.
- 4. Powder-filled tube-like article which upon melting and solidification provides an 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 inch per month after reheating at 850.degree. C. for a time up to 4 hours, and good high temperature oxidation resistance, said steel 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 iron except for incidental impurities.
Parent Case Info
This is a division of application Ser. No. 910,484 filed May 30, 1978, now U.S. Pat. No. 4,146,412, which in turn was a division of application No. 751,022 filed Dec. 14, 1976, now U.S. Pat. No. 4,099,976.
US Referenced Citations (12)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1275007 |
May 1972 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Wentzell, "Metal Powder Production by Vacuum Atomization," J. Vac. Sci. Technol., vol. 11, No. 6, Nov./Dec. 1974, pp. 1035-1037. |
Steel Products Manual, 12/74, pp. 21-22. |
Divisions (2)
|
Number |
Date |
Country |
Parent |
910484 |
May 1978 |
|
Parent |
751022 |
Dec 1976 |
|