Wednesday, February 19, 2014

Steel

  • Steel is an alloy of iron, with carbon being the primary alloying element.
  • 0.02% <= Carbon Content <= 2.06% (by weight)
  • Steel
    • Alloyed
      • Low: some of all alloying elements < 5%
      • High 
    • Unalloyed: Cu < 0.4%, Cr < 0.3%, Mo < 0.08%, Ni < 0.3%
  • Alloyed Steel: Steel + Some Alloying Elements like Manganese, Nickel, Chromium, Molybdenum, Boron, Titanium, Vanadium, Niobium = Modified Characteristics
  • Stainless Steel: Alloyed steel w/ Cr => 10.5% (i.e. high alloyed)

  • Steel specified by purpose of use and mechanical properties (unalloyed)

  • Steel specified by chemical composition (unalloyed)


  • Steel specified by chemical composition (low alloyed)


  • Steel specified by chemical composition (high alloyed)