SCM420H Alloy Steel Round Bars

SCM420H Alloy steel Round Bars is a commonly used chromium-molybdenum alloy steel known for its excellent hardenability and strength properties. When looking for SCM420H alloy steel round bars, consider their chemical composition, mechanical properties, and applications.

SCM420H is a low-alloy steel known for its excellent hardenability and strength. When considering SCM420H alloy steel round bars, you typically look at various aspects:

Chemical Composition:

Mechanical Properties:

• Tensile Strength: Typically 820-1030 MPa
• Yield Strength: Typically 680-885 MPa
• Elongation: Typically 14-18%
• Reduction of Area: Typically 40-50%
• Hardness: Typically in the range of 170-220 HB (Brinell hardness)

Physical Properties:

I. Density: The density of SCM420H alloy steel is typically around 7.85 g/cm³, similar to most steels.

II. Melting Point: The melting point of SCM420H alloy steel is typically around 1420-1460°C (2588-2660°F).

III. Thermal Conductivity: The thermal conductivity of SCM420H alloy steel is approximately 42-51 W/(m·K). This property indicates its ability to conduct heat.

IV. Specific Heat Capacity: The specific heat capacity of SCM420H alloy steel is typically around 460-470 J/(kg·K). This property denotes the amount of heat required to raise the temperature of a unit mass of the material by one degree Celsius.

V. Electrical Conductivity: Generally, alloy steels like SCM420H have relatively low electrical conductivity compared to other materials, making them suitable for various engineering applications.

Manufacturing Standards:SCM420H alloy steel round bars may adhere to various standards such as JIS G4053 (Japan Industrial Standards).

Heat Treatment: SCM420H steel is typically subjected to processes like quenching and tempering to achieve the desired properties.

Applications: These round bars are commonly used in applications requiring high strength and wear resistance, such as gears, shafts, axles, and bolts in automotive, machinery, and construction industries.