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HIGH STRENGTH, AIR-HARDENING STEEL WITH EXCELLENT SHAPING PROPERTIES

  • US 20090173412A1
  • Filed: 11/03/2005
  • Published: 07/09/2009
  • Est. Priority Date: 11/03/2004
  • Status: Abandoned Application
First Claim
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1. A high strength, air-hardening, temper-resistant steel suitable for welding and galvanizing, comprising the elements (contents in mass-%):

  • C 0.07 to ≦

    0.15 Al ≦

    0.05 Si 0.15 to ≦

    0.30 Mn 1.60 to ≦

    2.10 P ≦

    0.020 S ≦

    0.010 N 0.0030 to ≦

    0.0150 Cr 0.50 to ≦

    1.0 Mo 0.30 to ≦

    0.60 Ti 0.010 to ≦

    0.050 V 0.12 to ≦

    0.20 B 0.0015 to ≦

    0.0040,
    remainder iron including incidental steel-accompanying elements.

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