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Classification of steel

Steel can be classified according to

  • The composition, such as carbon, low-alloy or stainless steel.
  • The manufacturing methods, such as open hearth, basic oxygen process, or electric furnace methods.
  • The finishing method, such as hot rolling or cold rolling
  • The product form, such as bar plate, sheet, strip, tubing or structural shape
  • The deoxidation practice, such as killed, semi-killed, capped or rimmed steel
  • The microstructure, such as ferritic, pearlitic and martensitic
  • The required strength level, as specified in ASTM standards
  • The heat treatment, such as annealing, quenching and tempering, and thermomechanical processing
  • Quality descriptors, such as forging quality and commercial quality.

    Carbon Steels

    High-Strength Low-Alloy Steels

    Low-alloy Steels


















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