Other Steel Classifications

Steels can be categorized using various systems based on the following factors:

  • Composition: This includes considerations like carbon content, whether it’s low-alloy or stainless steel.
  • Manufacturing Methods: These encompass the processes employed during production, such as open hearth, basic oxygen, or electric furnace methods.
  • Finishing Methods: This pertains to the final treatments, such as hot rolling or cold rolling.
  • Product Form: It relates to the shape and format of the steel, which can include bar, plate, sheet, strip, tubing, or structural shapes.
  • Deoxidation Practice: This involves how the steel is deoxidized and may include methods like killed, semi-killed, capped, or rimmed steel.
  • Microstructure: This considers the internal structure of the steel, categorizing it as ferritic, pearlitic, martensitic, etc.
  • Required Strength Level: As specified in ASTM standards, this determines the steel’s strength characteristics.
  • Heat Treatment: This encompasses processes like annealing, quenching and tempering, and thermomechanical processing that can alter the steel’s properties.
  • Quality Descriptors: These provide information about the quality of the steel, including categories like forging quality and commercial quality.