Data storage device
    3.
    发明授权

    公开(公告)号:US06215615B1

    公开(公告)日:2001-04-10

    申请号:US09201882

    申请日:1998-11-30

    IPC分类号: G11B1700

    CPC分类号: G11B25/043 G11B33/1446

    摘要: Provided are novel data storage devices, such as hard disk apparatuses. The devices include a clean chamber accommodating a component formed from a free cutting stainless steel. The free cutting stainless steel has a sulfur (S) content of not less than 0.25 percent by mass and a manganese-to-sulfur content ratio (Mn/S) of not greater than 1.8. The free cutting stainless steel has been subjected to: (1) an acid cleaning; (2) to a passivation treatment; (3) to a degreasing treatment and to a subsequent rust-removing, descaling chemical treatment; or (5) to a degreasing treatment and to a subsequent chromate treatment.