Patents Assigned to Hanspeter Hau
  • PM hot-work steel and method of producing the same
    Patent number: 6015446
    Abstract: A powder-metallurgically produced hot-work steel consists (in weight percent) of: 0.25-0.45 carbon, 2.40-4.25 chromium, 2.50-4.40 molybdenum, 0.20-0.95 vanadium, 2.10-3.90 cobalt, 0.10-0.80 silicon, 0.154-0.65 manganese, the balance being iron and possibly impurities resulting from production. The powder charge with the above-mentioned composition is simultaneously exposed to high compacting pressures and high compacting temperatures in a hot isostatic press.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: January 18, 2000
    Assignee: Hanspeter Hau
    Inventor: Maximilian Rochl