Title:
SEAMLESS COPPER ALLOY TUBE FOR HEAT EXCHANGER BEING EXCELLENT IN 0.2 % PROOF STRESS AND FATIGUE STRENGTH
Document Type and Number:
WIPO Patent Application WO/1999/066087
Kind Code:
A1
Abstract:
A seamless copper alloy tube which is mainly used as a heat transfer tube of a heat exchanger, particularly a seamless copper alloy tube which can be used as a heat transfer tube of a heat exchanger using a HFC type chlorofluorocarbon as a heating medium. A seamless copper alloy tube for a heat exchanger manufactured from a copper alloy which contains 0.02 to 0.2 % of Co, 0.01 to 0.05 % of P, and optionally 1 to 20 ppm of C, the remainder being Cu and unavoidable impurities, wherein the content of the oxygen contained as the aforementioned unavoidable impurities is controlled to 50 ppm or less.
Inventors:
SUDO YUICHIRO (JP)
YAMAJI TETSUO (JP)
SAITO YUTAKA (JP)
YAMAJI TETSUO (JP)
SAITO YUTAKA (JP)
Application Number:
PCT/JP1999/003118
Publication Date:
December 23, 1999
Filing Date:
June 11, 1999
Export Citation:
Assignee:
MITSUBISHI MATERIALS CORP (JP)
SUDO YUICHIRO (JP)
YAMAJI TETSUO (JP)
SAITO YUTAKA (JP)
SUDO YUICHIRO (JP)
YAMAJI TETSUO (JP)
SAITO YUTAKA (JP)
International Classes:
C22C9/00; C22C9/06; F28F21/08; (IPC1-7): C22C9/06; C22C9/00
Foreign References:
JPH03180437A | 1991-08-06 | |||
JPH06122932A | 1994-05-06 | |||
JPS5492516A | 1979-07-21 | |||
JPS6270542A | 1987-04-01 |
Other References:
See also references of EP 1020538A4
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