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Home  >  Mild Steel  >  3 Types Of Carbon Steel That You Need To Know About
Posted inMild Steel

3 Types Of Carbon Steel That You Need To Know About

carbon steel
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Posted By Kian Huat Metal Posted on August 29, 2020
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All steel contain some amount of carbon and their physical properties differ according to their carbon content. The tensile strength, ductility or toughness of metal can be altered by adding carbon to it. With different ratio of carbon in steel, carbon steel can be categorized into 3 types: low carbon, medium carbon and high carbon steel.

carbon steel

Low Carbon Steel

Low carbon steel (or mild steel) is steel that has a low ratio of carbon, usually consisting of less than 0.30% of carbon. It is the most common type of steel and is relatively inexpensive to produce. Given its low carbon content, low carbon steel is easy to form and is perfect for applications where tensile strength is not the main prerequisite.

Common uses for low carbon steel:

  • Automobile components
  • Structural components
  • Machinery
  • Domestic appliances
  • Surgical instruments
  • Medical equipment

Properties of low carbon steel:

  • Low cost
  • Low hardness
  • Low tensile strength
  • High ductility
  • High machinability
  • High toughness
  • High weldability

Medium Carbon Steel

Medium carbon steel has a higher ratio of carbon to iron than low carbon steel, with carbon contents ranging from 0.30% to 0.60% of the steel mass. Medium carbon steels are typically mixed with alloys such as chromium, nickel and molybdenum to provide high strength, wear resistance and toughness. Most automotive parts are made of medium carbon steel, which offers ductility and are stronger, more durable than low-carbon steel.

Common uses for medium carbon steel:

  • Machinery parts
  • Pressure structures
  • Shafts
  • Couplings
  • Railway tracks

Properties of medium carbon steel:

  • Moderate toughness
  • Moderate machinability
  • Medium ductility
  • Medium strength
  • Medium weldability

High Carbon Steel

High carbon steels are the strongest and hardest within the three groups with carbon contents between 0.60% and 1.5% of the overall weight. Due to its high carbon content, high carbon steel is stronger and harder, but less ductile than low carbon and medium carbon steel.

Common uses for high carbon steel:

  • Railways
  • Bars
  • Cutting tools
  • Spring steel
  • Plates

Properties of high carbon steel:

  • Low ductility
  • Low machinability
  • Moderate weldability
  • High toughness
  • High strength

No matter which type of carbon steel you choose, each has their own advantages and disadvantages. It is important to take into consideration the cost, required physical properties and final use when choosing carbon steel. For any enquiries regarding carbon steels, you can reach out to any one of our experts at contact@kianhuatmetal.com.

Tags: Mild Steel
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Kian Huat Metal

Kian Huat Metal Pte Ltd is Singapore’s leading Aluminium, Mild Steel and Stainless Steel supplier, recognized for its reliability, efficiency and commitment to quality.

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Kian Huat Metal Pte Ltd is Singapore’s leading Aluminium, Mild Steel and Stainless Steel supplier, recognized for its reliability, efficiency and commitment to quality.
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