Alloy Steel is a type of steel that contains additional alloying elements apart from carbon, which is the primary constituent of carbon steel. Alloying elements are added to enhance specific properties of the steel, such as strength, hardness, corrosion resistance, and heat resistance. The combination of these elements results in alloys with improved performance characteristics.

We offer these Alloy Steels:

  • 4140 Annealed, Preheat-treated (Bar, Plate)
  • 4142 Preheat-treated (Bar, Plate, TG&P)
  • 4150*
  • 4340*
  • 52100*
  • 6150*
  • 8620 (Round Bar)
  • ETD 150* (Elevated Temperature Drawing process)

*Grades available upon request


  • Strength: Alloy steel is known for its high strength, making it suitable for applications where strength is critical.
  • Hardness: Alloying elements contribute to increased hardness.
  • Wear Resistance: Alloy steels with specific alloying elements exhibit improved resistance to wear.
  • Corrosion Resistance: Certain alloying elements enhance resistance to corrosion.
  • Heat Resistance: Alloy steels can maintain their properties at elevated temperatures.
Alloying Elements

Alloy steels may contain various alloying elements, including but not limited to:

  • Chromium: Improves corrosion resistance and hardenability.
  • Nickel: Enhances toughness, strength, and corrosion resistance.
  • Manganese: Contributes to strength and hardness.
  • Molybdenum: Improves strength and heat resistance.
  • Vanadium: Enhances strength, toughness, and wear resistance.
  • Silicon: Aids in deoxidization and improves strength.
  • Tungsten: Improves hardness and high-temperature strength.
Types of Alloy Steel
  • Low Alloy Steel: Contains a small percentage of alloying elements.
  • High Alloy Steel:Contains a higher percentage of alloying elements.
Heat Treatment

Alloy steels are often subjected to heat treatment processes such as quenching and tempering to achieve desired hardness and mechanical properties.


Machinability can vary depending on the alloying elements present. Some alloy steels may require specialized machining processes.


Alloy steel is widely used in various industries, including automotive, aerospace, construction, oil and gas, and tool manufacturing. Common applications include structural components, gears, shafts, pipelines, cutting tools, and more.