ST52 Mild Steel Round Bars

A comprehensive overview of ST52 mild steel round bars, covering their composition, properties, applications, processing methods, standards, and surface finish options. 

When selecting this material for specific applications, it's essential to consider its properties and suitability for the intended use case, consulting with material engineers or suppliers if necessary.

Chemical Composition:

Mechanical Properties:

• Tensile Strength: 490 MPa - 630 MPa
• Yield Strength: 355 MPa - 470 MPa
• Elongation at Break: 22% - 24%
• Hardness: Typically around 160 - 200 HB (Brinell hardness)

Physical Properties:

• Density: Approximately 7.85 g/cm³
• Thermal Conductivity: Around 48 W/(m·K) at room temperature
• Specific Heat Capacity: Approximately 0.49 J/(g·K)
• Melting Point: Typically above 1400°C (2550°F)
• Magnetic Properties: Usually ferromagnetic

Applications:

• ST52 mild steel round bars find applications in various industries including automotive, construction, manufacturing, and general engineering.
• Common applications include shafts, axles, gears, bolts, nuts, and other structural components requiring moderate strength and good machinability.

Processing:

• ST52 mild steel round bars can be processed through hot rolling, cold drawing, or forging methods.
• Heat treatment processes such as annealing, normalizing, quenching, and tempering may be applied to achieve desired mechanical properties.

Standards: ST52 mild steel round bars typically conform to international standards such as DIN 17100 for structural steels.

Surface Finish: Surface finish options for ST52 mild steel round bars include black, peeled, rough turned, or polished, depending on the application requirements.