IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0445482
(1974-02-25)
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발명자
/ 주소 |
- Goller George N. (Towson MD) Espy Ronald H. (Randallstown MD)
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출원인 / 주소 |
- Armco Steel Corporation (Middletown OH 02)
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인용정보 |
피인용 횟수 :
6 인용 특허 :
0 |
초록
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A stress corrosion resistant austenitic stainless steel essentially consisting of from 15.5% to 20% chromium, from 11% to 14% manganese, from 1.1% to 3.75% nickel, from 0.01% to 0.12% carbon, from 0.20% to 0.38% nitrogen, and balance substantially iron. Phosphorous may be present up to 0.06% maximum
A stress corrosion resistant austenitic stainless steel essentially consisting of from 15.5% to 20% chromium, from 11% to 14% manganese, from 1.1% to 3.75% nickel, from 0.01% to 0.12% carbon, from 0.20% to 0.38% nitrogen, and balance substantially iron. Phosphorous may be present up to 0.06% maximum, sulfur up to 0.04% maximum, and silicon up to 1% maximum. The steel has high strength at room temperature, good stability when severely cold worked, good cryogenic strength and toughness, wear resistance and excellent fusion welding characteristics, making it useful for a multiplicity of cryogenic applications, fabrication of welded articles, and cold-drawn wire.
대표청구항
▼
An austenitic stainless steel consisting essentially of from 15.5% to 20% chromium, from 11% to 14% manganese, from 2.50% to 3.75% nickel, from 0.01% to 0.06% carbon, from 0.20% to 0.38% nitrogen, up to 0.06% phosphorus, up to 0.04% sulfur, up to 1% silicon, and remainder substantially iron except f
An austenitic stainless steel consisting essentially of from 15.5% to 20% chromium, from 11% to 14% manganese, from 2.50% to 3.75% nickel, from 0.01% to 0.06% carbon, from 0.20% to 0.38% nitrogen, up to 0.06% phosphorus, up to 0.04% sulfur, up to 1% silicon, and remainder substantially iron except for incidental impurities, said steel having an austenite stability factor and a ferrite forming tendency, as hereinbefore defined, falling within the area ABEF of the accompanying graph, exhibiting no stress corrosion failure after 264 hours exposure to boiling magnesium chloride solution, by the hereinbefore described test, and having a Charpy V-notch impact strength of
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