Title:
COPPER ALLOY SEAMLESS TUBE FOR COLD AND HOT WATER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2014/142048
Kind Code:
A1
Abstract:
A copper alloy seamless tube for cold and hot water supply obtained by processing a copper alloy, characterized in that: the copper alloy contains, by mass, 0.45 to 0.90% of Sn, 0.01 to 0.08% of Zr, and 0.004 to 0.04% of P, with the remainder being made up by Cu and unavoidable impurities; and the electrical conductivity of the copper alloy seamless tube for cold and hot water supply satisfies the following relationship (1): (1) ρ2-ρ1 ≥ 0.3 (%IACS)(where ρ1 represents the electrical conductivity (%IACS) after solution treatment and ρ2 represents the electrical conductivity (%IACS) after aging treatment). According to the present invention, it is possible to provide a copper alloy seamless tube for cold and hot water supply having high strength, little decrease in strength caused by brazing, high creep deformation resistance characteristics, and a high effect of suppressing intermediate temperature brittleness.
Inventors:
ANDO TETSUYA (JP)
Application Number:
PCT/JP2014/056109
Publication Date:
September 18, 2014
Filing Date:
March 10, 2014
Export Citation:
Assignee:
UACJ CORP (JP)
International Classes:
C22C9/02; B21C23/00; B21C23/08; C22F1/08; C22F1/00
Foreign References:
| JP2010222692A | 2010-10-07 | |||
| JP2008255381A | 2008-10-23 | |||
| JP2011246802A | 2011-12-08 | |||
| JP2011184775A | 2011-09-22 |
Attorney, Agent or Firm:
AKATSUKA Kenji et al. (JP)
Kenji Akatsuka (JP)
Kenji Akatsuka (JP)
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