Categories & Classifications of steel

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Categories Classifications of steel
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Steel Categories

• According to the American Iron Steel Institute
  (AISI), Steel can be categorized into four basic
  groups based on the chemical compositions
• Carbon steel
• Alloy Steel
• Stainless Steel
• Tool Steel

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Classifications

• Composition
• The production method
• Finishing method used
• Form or shape
• De-oxidation process
• Microstructure
• Physical Strength
• Heat Treatment
• Quality Nomenclature

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Steel Numbering Systems

• There are two major numbering systems used by the
  steel industry, the first developed by the
  American Iron Steel Institute, and the second
  by the Society of Automotive engineering.
• Both of these systems are based on four digit
  code numbers when identifying the base carbon and
  alloy steels.
• There are selections of alloys that have five
  digit codes instead.

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Carbon Steel

• Carbon Steel can be segregated into three main
  categories
• Low Carbon Steel
• Medium Carbon Steel
• High Carbon Steel

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Low Carbon Steel

• Typically contain 0.04 to 0.30 carbon content.
  This is one of the largest groups of Carbon
  Steel.
• It covers a great diversity of shapes from Flat
  Sheet to Structural Beam.
• Depending on the desired properties needed, other
  elements are added or increased at steel
  companies.

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Medium Carbon Steel

• Typically has a carbon range of 0.31 to 0.60,
  and a manganese content ranging from .060 to
  1.65.
• This product is stronger than low carbon steel,
  and it is more difficult to form, weld and cut on
  steel companies.
• Medium carbon steels are quite often hardened and
  tempered using heat treatment.

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High Carbon Steel

• Commonly known as carbon tool steel it
  typically has a carbon range between 0.61 and
  1.50.
• High carbon steel is very difficult to cut, bend
  and weld.
• Once heat treated it becomes extremely hard and
  brittle.

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• Steel is one of the basic building blocks of the
  modern world.
• Automobiles, appliances, bridges, oil pipelines,
  and buildings, all are made with steel.
• While steel manufacturing has existed for
  centuries, the process for making steel companies
  continues to evolve.

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Steel Companies
Steel House Construction Co. LLC PO Box 3346,
SHARJAH, UAE Telephone [phone]
steelhousellc.com