COSMETIC ALUMINUM ALLOYS MADE FROM RECYCLED ALUMINUM SCRAP

    公开(公告)号:US20210087656A1

    公开(公告)日:2021-03-25

    申请号:US17020234

    申请日:2020-09-14

    Applicant: Apple Inc.

    Abstract: The disclosure is directed to aluminum alloys made from recycled components. The alloys have copper (Cu) from 0.051 to 0.10 wt %, chromium (Cr) from 0.01 to 0.10 wt %, zinc (Zn) from 0.02 to 0.20 wt %, manganese (Mn) from 0.03 to 0.10 wt %, iron (Fe) in an amount of at least 0.10 wt %, silicon (Si) in an amount of at least 0.35 wt %, magnesium (Mg) in amount of at least 0.45 wt %, and the remaining wt % being Al and incidental impurities. In other aspects, the disclosure is directed to aluminum alloys having copper (Cu) from 0.010 to 0.050 wt %, chromium (Cr) from 0.01 to 0.10 wt %, zinc (Zn) from 0.01 to 0.20 wt %, manganese (Mn) from 0.03 to 0.10 wt %, iron (Fe) in an amount of at least 0.10 wt %, silicon (Si) in an amount of at least 0.35 wt %, magnesium (Mg) in amount of at least 0.45 wt %, and the remaining wt % being Al and incidental impurities. The b* color of the alloys ranges from −2 to 2, and the L* color ranges from 70 to 100.

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