EN24: Flat Bars and Round Bars: The Ultimate Alloy Steel for High-Performance Applications

EN24 is a high-performance alloy steel that is widely used in various engineering applications due to its excellent mechanical properties and versatility. This blog post will delve into the equivalent grades, chemical composition, material properties, forging, heat treatment, and applications of EN24 steel.

en24 round bars

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Equivalent Grades

EN24 is known by several other designations across different standards. Some of the equivalent grades include:

• AISI/SAE 4340: A similar alloy steel with comparable properties.

• DIN 1.6582: A German standard equivalent.

• BS 817M40: The British Standard equivalent.

• JIS SNCM439: The Japanese Industrial Standard equivalent.

  
  

These equivalents may vary slightly in composition and properties, but they are generally used interchangeably in many applications.

Chemical Composition

The chemical composition of EN24 typically includes the following elements:

• Carbon (C): 0.36% - 0.44%

• Silicon (Si): 0.20% - 0.40%

• Manganese (Mn): 0.50% - 0.80%

• Chromium (Cr): 1.40% - 1.80%

• Nickel (Ni): 1.60% - 2.00%

• Molybdenum (Mo): 0.20% - 0.40%

• Phosphorus (P): ≤ 0.035%

• Sulfur (S): ≤ 0.035%

This composition provides EN24 with its characteristic strength, toughness, and wear resistance.

Material Properties

EN24 is known for its outstanding mechanical properties, which include:

• Tensile Strength: Approximately 850 - 1000 MPa (123,000 - 145,000 psi)

• Yield Strength: Around 600 - 800 MPa (87,000 - 116,000 psi)

• Elongation: 12% - 15%

• Hardness: Typically 28 - 34 HRC (Rockwell Hardness Scale)

These properties make EN24 suitable for applications requiring high strength and toughness, particularly in dynamic loading conditions.

Forging of EN24

Forging EN24 requires careful temperature control to achieve the desired mechanical properties. The recommended forging temperature range is between 1100°C to 1250°C (2012°F to 2282°F).

During the forging process, it is essential to avoid overheating, as this can lead to grain growth and adversely affect the material's properties. After forging, the material should be allowed to cool slowly to room temperature to relieve internal stresses.

Heat Treatment of EN24

Heat treatment is crucial for enhancing the mechanical properties of EN24. The typical heat treatment process involves:

• Annealing: Heating to around 850°C (1562°F) and then slowly cooling to improve machinability.

• Quenching: Heating to approximately 850°C (1562°F) and then rapidly cooling in oil or water to achieve high hardness.

• Tempering: Reheating to a temperature between 500°C to 700°C (932°F to 1292°F) to reduce brittleness while maintaining strength.

The specific heat treatment parameters can be adjusted based on the desired hardness and application requirements.

Applications

Due to its excellent mechanical properties, EN24 is used in a variety of demanding applications, including:

• Aerospace Components: Such as landing gear and structural components.

• Automotive Industry: For manufacturing gears, shafts, and crankshafts.

• Oil and Gas Industry: In the production of high-strength fasteners and valves.

• Heavy Machinery: For components that require high strength and wear resistance.

In summary, EN24 is a versatile alloy steel that offers a combination of strength, toughness, and wear resistance, making it suitable for a wide range of applications. Understanding its properties, treatment processes, and equivalents can help engineers and manufacturers make informed decisions when selecting materials for their projects.

RN Gupta and Bros is a leading steel trading company with a proud history spanning over 50 years in the industry, serving more than 500 clients across India. Our vast experience and dedication to quality make us a reliable partner for all your steel requirements. If you need en24 steel or any other type of steel, don't hesitate to contact us. We are committed to delivering outstanding service and ensuring that your needs are addressed with precision and care. Let us take care of the details while you concentrate on your business!

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