Aluminum alloy pipe having multistage formability

Details Aluminum alloy pipe having multistage formability Aluminum alloy pipe having multistage formability

C - Chemistry, Metallurgy

22

C

C22C 21/06 (2006.01) B21C 23/08 (2006.01) B21C 37/15 (2006.01) C22C 21/08 (2006.01) F16L 9/02 (2006.01)

Patent

CA 2417573

An aluminum alloy pipe, which is composed of an aluminum alloy containing 2.0% (% by mass, the same hereinafter) to 5.0% of Mg, 0.20% or less of Si, 0.30% or less of Fe, 0.8% or less (including 0%) of Mn, 0.35% or less (including 0%) of Cr, and 0.2% or less (including 0%) of Ti, with the balance being A1 and inevitable impurities, wherein the aluminum alloy pipe has a 0.2% yield strength of 60 MPa or more and 160 MPa or less and an average crystal grain diameter of 150 µm or less, and wherein the aluminum alloy pipe has multistage formability.

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