| (19) |
 |
|
(11) |
EP 0 265 062 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
15.02.1989 Bulletin 1989/07 |
| (43) |
Date of publication A2: |
|
27.04.1988 Bulletin 1988/17 |
| (22) |
Date of filing: 10.09.1987 |
|
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| (84) |
Designated Contracting States: |
|
AT BE CH DE ES FR GB GR IT LI LU NL SE |
| (30) |
Priority: |
19.09.1986 US 910239
|
| (71) |
Applicant: CRUCIBLE MATERIALS CORPORATION |
|
Syracuse,
New York 13201-0977 (US) |
|
| (72) |
Inventors: |
|
- Haswell Jr., Walter T.
Jamesville, NY 13078 (US)
- Pinnow, Kenneth E.
Pittsburgh, PA 15237 (US)
- Eckenrod, John J.
Coraopolis, PA 15108 (US)
- Rhodes, Geoffrey O.
Saxonburg, PA 16056 (US)
|
| (74) |
Representative: Sheader, Brian N. et al |
|
Eric Potter & Clarkson
St. Mary's Court
St. Mary's Gate
Nottingham NG1 1LE
Nottingham NG1 1LE (GB) |
|
| |
|
| (54) |
Low carbon plus nitrogen, free-machining austenitic stainless steel |
(57) A low carbon plus nitrogen, free-machining, austenitic stainless steel having improved
machinability and excellent corrosion resistance. The steel composition in weight
percent is essentially carbon plus nitrogen up to about 0.06, chromium 16 to 20, nickel
6 to 14, manganese up to 0.60, sulfur 0.15 to 0.50, silicon up to about 1, phosphorus
up to about 0.20, molybdenum up to about 1 and balance iron.