A105 Mild Steel Round Bars

A comprehensive overview of A105 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 (Min-Max):

Mechanical Properties:

• Tensile Strength: 330 MPa - 415 MPa
• Yield Strength: 205 MPa - 245 MPa
• Elongation at Break: 27% - 34%
• Hardness: Typically around 120 - 160 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:

• A105 mild steel round bars are commonly used in applications requiring low carbon content and good weldability, such as in construction, manufacturing, and general engineering.
• They are suitable for making bolts, nuts, flanges, valves, and other components where moderate strength and ductility are required.

Processing:

• A105 mild steel round bars can be processed through hot rolling, cold drawing, or forging methods.
• Heat treatment processes such as annealing, normalizing, or stress relieving may be applied to improve machinability or mechanical properties.

Standards: A105 mild steel round bars typically conform to international standards such as ASTM A105 for carbon steel forgings for piping applications.

Surface Finish: Surface finish options for A105 mild steel round bars include black, peeled, rough turned, or polished, depending on the application requirements.