C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/83
C22C 21/06 (2006.01) G11B 5/64 (2006.01) G11B 5/73 (2006.01)
Patent
CA 1333013
An aluminum alloy for magnetic disc substrate excellent in platability is disclosed, which is characterized in that not less than 0.010 wt.% and under 0.03 wt.% of Cu, not less than 2 wt. % and not more than 6 wt.% of Mg and not less than 0.05 wt. % and not more than 2.0 wt. % of Zn are contained, further one or more of over 0.01 wt. % and under 0.05 wt. % of Mn and over 0.01 wt. % and under 0.05 wt. % of Cr are contained, and, as impurity elements, Si, Fe, Ti and other individual unavoidable element are regulated to be not more than 0.1 wt. %, not more than 0.1 wt. %, not more than 0.02 wt. % and not more than 0.02 wt. %, respectively. Zr may be contained additionally in amounts of not less than 0.005 wt. % and under 0.05 wt. %.
613508
Kishino Kunihiko
Nabae Motohiro
Borden Ladner Gervais Llp
Furukawa Aluminum Co. Ltd.
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