1. Low Carbon Steel Bars:

These bars contain a relatively low percentage of carbon, typically up to 0.30%. They are often referred to as mild steel bars and are known for their malleability, ductility, and ease of welding. Low-carbon steel bars are commonly used in construction, automotive components, and general-purpose applications.

2. Medium Carbon Steel Bars:

Medium carbon steel bars contain a carbon content ranging from 0.30% to 0.60%. They offer a balance between strength and ductility and are frequently used in applications that require higher strength, such as axles, shafts, and gears.

3. High Carbon Steel Bars:

High-carbon steel bars contain a higher carbon content, typically ranging from 0.60% to 1.0%. These bars exhibit excellent strength, hardness, and wear resistance. High carbon steel bars are often used in applications such as springs, cutting tools, and high-strength wires.

4. Alloy Steel Bars:

Alloy steel bars are carbon steel bars that are alloyed with other elements such as manganese, chromium, nickel, or molybdenum to enhance their properties. Alloy steel bars can offer improved strength, hardness, and corrosion resistance compared to plain carbon steel bars. They are commonly used in applications such as automotive parts, machinery components, and structural applications.

5. Rebar:

Reinforcing bars, commonly known as rebar, is a type of carbon steel bar used in reinforced concrete structures to provide tensile strength and stability. Rebars are typically made from low carbon steel and have deformations or ridges on their surface to enhance the bond with the concrete.

It’s important to note that these classifications are not exhaustive, and there may be other specific classifications or grades of carbon steel bars based on industry standards or specific requirements. The classification systems may vary depending on the country or organization setting the standards.