Hydrogen sulfide corrosion resistant high-Cr and high-Ni alloys
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C22C-030/02
C22C-038/02
출원번호
US-0836108
(1997-05-05)
국제출원번호
PCT/JP96/01672
(1996-06-17)
§371/§102 date
19970505
(19970505)
국제공개번호
WO-9748830
(1997-12-24)
발명자
/ 주소
Ueda Masakatsu,JPX
출원인 / 주소
Sumitomo Metal Industries, Ltd., JPX
대리인 / 주소
Burns, Doane, Swecker & Mathis, LLP
인용정보
피인용 횟수 :
0인용 특허 :
8
초록▼
A high-Cr and high-Ni alloy of the invention comprises the following chemical composition and has excellent corrosion resistance to hydrogen sulfide in an environment where a partial pressure of hydrogen sulfide is about 1 atm., or below and the temperature is about 150.degree. C. The alloy is free
A high-Cr and high-Ni alloy of the invention comprises the following chemical composition and has excellent corrosion resistance to hydrogen sulfide in an environment where a partial pressure of hydrogen sulfide is about 1 atm., or below and the temperature is about 150.degree. C. The alloy is free of any expensive Mo and W and is thus inexpensive, with the attendant feature that mass production is possible: Si: 0.05-1.0%, Mn: 0.1-1.5%, Cr: 20-30%, Ni: 20-40%, sol. Al: 0.01-0.3%, Cu: 0.5-5.0%, REM: 0-0.10%, Y: 0-0.20%, Mg: 0-0.10%, Ca: 0-0.10%, and balance: Fe and incidental impurities, provided that C, P and S in the incidental impurity are, respectively, 0.05% or below, 0.03% or below and 0.01% or below. As set out above, each of REM, Y, Mg and Ca do not have to be added at all. If these elements are used, one or more of REM, Y, Mg and Ca are added. Preferable ranges of the contents of these elements when added are such that REM: 0.001-0.10%, Y: 0.001-0.20%, Mg: 0.001-0.10%, and Ca: 0.001-0.10%.
대표청구항▼
[ I claim:] [1.] A high-Cr and high-Ni alloy having good corrosion resistance to hydrogen sulfide, the alloy consisting essentially of the following chemical composition on the basis of percent by weight:______________________________________ Si: 0.05-1.0%; Mn: 0.1-1.5%; Cr: 20-30%; Ni: 20-40%; sol.
[ I claim:] [1.] A high-Cr and high-Ni alloy having good corrosion resistance to hydrogen sulfide, the alloy consisting essentially of the following chemical composition on the basis of percent by weight:______________________________________ Si: 0.05-1.0%; Mn: 0.1-1.5%; Cr: 20-30%; Ni: 20-40%; sol. Al: 0.01-0.3%; Cu: 0.5-5.0%; ______________________________________ balance: Fe and incidental impurities,provided that C, P and S in the incidental impurity are, respectively, 0.05% or below, 0.03% or below and 0.01% or below.
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이 특허에 인용된 특허 (8)
Kudo Takeo (Suita JPX) Okada Yasutaka (Nishinomiya JPX) Moroishi Taishi (Kobe JPX) Ikeda Akio (Hyogo JPX) Ohtani Hiroo (Kobe JPX) Yoshikawa Kunihiko (Suita JPX), Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking.
Kudo Takeo (Suita JPX) Okada Yasutaka (Nishinomiya JPX) Moroishi Taishi (Kobe JPX) Ikeda Akio (Hyogo JPX) Ohtani Hiroo (Kobe JPX) Yoshikawa Kunihiko (Suita JPX), Alloy for making high strength deep well casing and tubing having improved resistance to stress-corrosion cracking.
Domian Henry A. (Alliance OH) LaCount Dale F. (Alliance OH) Miller Alex S. (Poland OH) Seibert Kenneth D. (Hemet CA), Austenitic Fe-Cr-Ni alloy designed for oil country tubular products.
Mankins William L. (Huntington WV) Harris Jerry A. (Huntington WV) Hosier James C. (Huntington WV) Kenny Raymond J. (Chappaqua NY), Process of using an iron-nickel-chromium alloy in an oxidation attacking environment.
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