Patents Assigned to Nippon Precision Casting Corp.
  • Aluminum alloy for use in castings
    Patent number: 5989495
    Abstract: An aluminum alloy for use in castings, comprising 0.0005-0.01 weight % of Fe, 0.0005-0.01 weight % of Si, 2.5-6.5 weight % of Cu, 0.10-0.50 weight % of Mg, 0.001-0.40 weight % of Mn, 0.10-0.50 weight % of Ti, 0.20-1.2 weight % of Ag, 0.002-0.01 weight % of B, no more than 0.01 weight % of any other individual component aside from Al, and the balance Al. The aluminum alloy is thereby designed to provide improved toughness without detracting from tensile strength, proof stress, and hardness.
    Type: Grant
    Filed: July 30, 1996
    Date of Patent: November 23, 1999
    Assignees: Kyushu Mitsui Aluminum Industries, Inc., Nippon Precision Casting Corp.
    Inventors: Tomoaki Isayama, Osamu Shibata