Title:
Ni BASE ALLOY MATERIAL TUBE AND METHOD FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2006/003954
Kind Code:
A1
Abstract:
A nickel base alloy material tube which has a chemical composition that C ≤ 0.04 %, Si ≤ 0.50 %, Mn: 0.01 to 6.0 %, P ≤ 0.03 %, S ≤ 0.01 %, Cr: 15 to 30 %, Ni: more than 45 % and not more than 60 %, Mo: 0 to 18 %, W: 0 to 36 %, with the proviso that Mo (%) + 0.5W (%): more than 1.5 % and not more than 18 %, Cu: 0.01 to 1.5 %, Al ≤ 0.01 %, N: 0.0005 to 0.20 %, and the balance: substantially Fe, wherein 1380 - 5000P - 100S - 4400C ≥ 1300, Ni + 10(Mo + 0.5W) + 100N ≤ 200, and (Ni - 50) + 10(N - 0.1) -2(Cr -25) - 5(Mo + 0.5W - 6) + 12 ≥ 0 are satisfied. The above nickel base alloy material tube has excellent inner surface characteristics being sufficient to be finished into a seamless pipe by the use of Mannesman piercer. The resultant seamless pipe has an excellent mechanical properties and also excellent in the corrosion resistance under the sour gas environment, and thus, the above nickel base alloy material tube can be utilized as a material tube for an oil well pipe and a line pipe and further a material tube for various structural members in a nuclear power plant and a chemical plant.
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Inventors:
Igarashi, Masaaki c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Shimoda, Kazuhiro c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Yamakawa, Tomio c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Amaya, Hisashi c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Shimoda, Kazuhiro c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Yamakawa, Tomio c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Amaya, Hisashi c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Application Number:
PCT/JP2005/011993
Publication Date:
January 12, 2006
Filing Date:
June 29, 2005
Export Citation:
Assignee:
SUMITOMO METAL INDUSTRIES, LTD. (5-33, Kitahama 4-chome Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Igarashi, Masaaki c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Shimoda, Kazuhiro c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Yamakawa, Tomio c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Amaya, Hisashi c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Igarashi, Masaaki c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Shimoda, Kazuhiro c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Yamakawa, Tomio c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
Amaya, Hisashi c/o Sumitomo Metal Industries Ltd. (5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 41, 54100, JP)
International Classes:
B21B19/04; C22C19/05; C22C30/02; C22F1/10; (IPC1-7): C22C19/05; B21B19/04; C22C30/02; C22F1/10
Attorney, Agent or Firm:
Honoue, Terutada (Honoue Patent Office, 17-23 Higashinaniwa-cho 5-chom, Amagasaki-shi Hyogo 92, 66008, JP)
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