EN36B Alloy Steel Round Bars

EN36B Alloy Steel Round Bars is a high-quality alloy steel known for its strength, toughness, and wear resistance. It is commonly used in applications requiring high tensile strength, such as gears, axles, crankshafts, and heavy-duty machinery components.

Details About EN36B Alloy Steel Round Bars:

Chemical Composition: EN36B typically contains elements such as carbon, manganese, silicon, chromium, nickel, and molybdenum. The specific composition may vary slightly depending on the manufacturer and the desired properties.

• Carbon (C): Contributes to hardness and strength. Typically ranges from 0.35% to 0.45%.
• Silicon (Si): Improves strength and hardness. Typically ranges from 0.10% to 0.35%.
• Manganese (Mn): Enhances hardenability and tensile strength. Usually between 0.60% and 1.00%.
• Chromium (Cr): Provides corrosion resistance and hardenability. Typically between 1.30% and 1.60%.
• Nickel (Ni): Enhances toughness and impact strength. Typically between 1.30% and 1.60%.
• Molybdenum (Mo): Improves hardenability and strength. Typically between 0.20% and 0.35%.
• Phosphorus (P): Should be controlled to avoid brittleness. Typically limited to a maximum of 0.040%.
• Sulfur (S): Should be controlled to avoid brittleness. Typically limited to a maximum of 0.040%.

Physical Properties:

• Density: The density of EN36B alloy steel is typically around 7.85 g/cm³.
• Melting Point: The approximate melting point of EN36B alloy steel is around 1420-1460°C.
• Thermal Conductivity: The thermal conductivity of EN36B alloy steel is moderate.
• Electrical Conductivity: Typically low, as with most steels.

Heat Treatment Properties:

• Annealing: Heating to around 850-900°C, followed by slow cooling in the furnace or air, improves machinability and relieves internal stresses.
• Normalizing: Heating to around 870-930°C, followed by air cooling, improves machinability and refines the grain structure.
• Hardening: Heating to around 830-860°C, followed by quenching in oil or water, achieves high hardness.
• Tempering: Reheating the hardened steel to around 150-250°C, followed by air cooling, reduces hardness and increases toughness.

Mechanical Properties:

• Tensile Strength: Typically ranges from 850 MPa to 1050 MPa, depending on heat treatment and bar diameter.
• Yield Strength: Generally around 600 MPa to 800 MPa.
• Elongation: Typically 10% to 15%.
• Hardness: After hardening and tempering, the hardness of EN36B alloy steel typically ranges from 28 to 32 HRC.

Mechanical Properties: EN36B alloy steel round bars exhibit excellent mechanical properties, including high tensile strength, good ductility, and high wear resistance. The material is typically hardened and tempered to achieve the desired mechanical properties.

Heat Treatment: EN36B steel is often subjected to heat treatment processes such as quenching and tempering to enhance its mechanical properties. This heat treatment process helps improve the hardness, toughness, and overall performance of the material.

Size Range: EN36B alloy steel round bars are available in various sizes ranging from small diameters to larger dimensions, depending on the specific requirements of the application. Common sizes include diameters ranging from a few millimeters to several inches.

Surface Finish: The surface finish of EN36B alloy steel round bars can vary from as-rolled to precision-ground, depending on the application and the desired level of surface quality and dimensional accuracy.

Applications: EN36B alloy steel round bars are widely used in industries such as automotive, aerospace, manufacturing, and heavy machinery due to their excellent mechanical properties and high fatigue strength. They are commonly used for making gears, shafts, axles, and other critical components subjected to heavy loads and high wear conditions.

Availability: EN36B alloy steel round bars are available from various steel suppliers and distributors worldwide. It's essential to source these bars from reputable manufacturers to ensure quality and consistency in material properties.