SCr420 Steel

The following is the detailed information about SCr420 Steel:

• Standards: JIS G4053-2003 (Japanese Industrial Standards).

• Chemical composition:

• Carbon (C): The content ranges from 0.18% to 0.23%.

• Silicon (Si): 0.15% to 0.35%.

• Manganese (Mn): 0.60% to 0.90%.

• Sulfur (S): The allowable residual content is ≤ 0.030%.

• Phosphorus (P): The allowable residual content is ≤ 0.030%.

• Chromium (Cr): 0.90% to 1.20%.

• Nickel (Ni): The allowable residual content is ≤ 0.25%.

• Copper (Cu): The allowable residual content is ≤ 0.030%.

• Mechanical properties:

• Tensile strength σb (MPa): ≥ 835 (85).

• Yield strength σs (MPa): ≥ 540 (55).

• Elongation δ5 (%): ≥ 10.

• Area reduction ψ (%): ≥ 40.

• Impact energy Aku (J): ≥ 47.

• Impact toughness value αkv (J/cm²): ≥ 59 (6).

 

The application of SCr420 Steel is diverse and widespread across various industries due to its specific properties and mechanical characteristics.

One of the primary uses of SCr420 Steel is in the automotive sector. It is commonly employed in the manufacturing of transmission gears and shafts. The steel's high strength and durability enable it to withstand the constant rotational forces and mechanical stress within the vehicle's transmission system. This ensures smooth power transmission and reliable performance over an extended period.

In the machinery manufacturing industry, SCr420 Steel is utilized for producing components such as crankshafts and connecting rods. These parts are subjected to repetitive loading and require materials with excellent fatigue resistance, which this steel provides. The ability of SCr420 Steel to maintain its mechanical properties under cyclic loading makes it an ideal choice for these critical components.

The aerospace industry also benefits from the use of SCr420 Steel. It can be found in certain structural components where a combination of strength, lightweight, and resistance to fatigue is necessary. Although not as commonly used as some specialized aerospace alloys, it can play a role in specific applications where cost and performance requirements are balanced.

Furthermore, in the field of industrial equipment, SCr420 Steel is used in the production of gears and bearings. The steel's hardness and wear resistance ensure long service life and efficient operation of these components, reducing maintenance and replacement costs.

Another area where SCr420 Steel finds application is in the manufacturing of tools and dies. Its ability to withstand high pressure and wear makes it suitable for forming and shaping various materials.

In the construction industry, it can be used in the fabrication of certain mechanical parts and components that are exposed to moderate loads and environmental conditions.

Overall, the versatility of SCr420 Steel makes it a valuable material in numerous engineering and manufacturing applications. Its properties allow it to meet the demanding requirements of different industries, contributing to the creation of reliable and efficient products and systems.

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