Patents Assigned to ALLVAC LTD.
  • Non-magnetic corrosion resistant high strength steels
    Publication number: 20050047952
    Abstract: A non-magnetic corrosion and galling resistant high strength steel suitable for use as non-magnetic components in directional drilling of oil and gas wells whose composition by weight includes: carbon up to 0.2%; silicon up to 1.0%; manganese from 10.0 to 20.0%; chromium from 13.5 to 18.0%; nickel from 1.0 to 7.0%; molybdenum from 1.5 to 4.0%; and nitrogen from 0.2 to 0.4%, the composition satisfying the formulae: (i) and (ii): nickel equivalence+chromium equivalence>35.
    Type: Application
    Filed: September 22, 2004
    Publication date: March 3, 2005
    Applicant: ALLVAC LTD.
    Inventor: Michael Coleman