US 11,993,830 B2
Wires formed from improved 8000-series aluminum alloy
Srinivas Siripurapu, Milan (IT); Shenjia Zhang, Zionsville, IN (US); Richard Stephen Baker, Cumming, GA (US); Nhon Q. Vo, Skokie, IL (US); Francisco U. Flores, Chicago, IL (US); and Davaadorj Bayansan, Glenview, IL (US)
Assigned to General Cable Technologies Corporation, Highland Heights, KY (US); and NanoAI, LLC, Skokie, IL (US)
Filed by GENERAL CABLE TECHNOLOGIES CORPORATION, Highland Heights, KY (US); and NanoAl, LLC, Skokie, IL (US)
Filed on Nov. 21, 2018, as Appl. No. 16/198,267.
Claims priority of provisional application 62/589,742, filed on Nov. 22, 2017.
Prior Publication US 2019/0153566 A1, May 23, 2019
Int. Cl. C22C 21/00 (2006.01)
CPC C22C 21/00 (2013.01) 9 Claims
 
1. A building wire formed from an improved 8000-series aluminum alloy comprising, by weight:
0.44% to about 0.80% iron;
about 0.10% to about 0.3% copper;
about 0.02% to 0.04% silicon; and
about 0.001% to about 0.1% of a rare earth element selected from one or more of erbium, ytterbium, and scandium;
wherein the improved 8000-series aluminum alloy exhibits an elongation at break of 10% or greater in accordance with ASTM B800-05 (2015);
wherein the improved 8000-series aluminum alloy exhibits one or more of:
i) a tensile creep rate of about 1*10−5 s−1 to about 2*10−8 s−1 when measured in accordance to ASTM E139 (2011) at 100° C. with 70 MPa of applied stress; and
ii) a tensile stress relaxation time of about 1,000 seconds or greater to reach about 85% of an initial tensile stress of 75 MPa when measured in accordance to ASTM E328 (2013) at 25° C.; and
wherein the improved 8000-series aluminum alloy is an improved AA8030 aluminum alloy.