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Composition
Mild carbon steel, also known as plain carbon steel, typically consists of iron, carbon, manganese, and sometimes silicon or phosphorus. The carbon content ranges from 0.05-0.25%, contributing to its machinability and weldability. Other elements like manganese enhance strength.

Mechanical Properties
Due to its low carbon content, Mild Steel has good ductility allowing for forming. It also has moderate strength with a tensile strength of 300-600 MPa. Heat treating can improve properties for specific applications.

Grades
Common grades include ASTM A36, EN S275JR, and JIS SS400. Standards like ASTM and EN specify chemical compositions and mechanical requirements for different grades.


Forms and Shapes
Available as flat bars, plates, angles, channels, beams, rounds, pipes/tubes, and wire. Commonly used profiles include flats,Angles, channels for structural elements.

Finishing and Coatings
Surfaces can be painted, powder coated, or galvanized for corrosion protection. Surface preparation like cleaning is required for coatings to adhere.

Weldability
Mild carbon steel welds very well using techniques like SMAW and MIG. Minimal preheating needed and good weld properties attained.

Due to the above properties, mild carbon steel sees wide application in construction, machinery, infrastructure and more.

Construction
Used extensively for beams, columns, trusses in building construction. Reinforcing bars provide tensile strength to concrete structures.

Machinery
Gears, shafts, housings for mechanical components are often machined from mild carbon steel for its machinability and mechanical properties.

Automotive
Body panels, chassis components, drive shafts benefit from the formability and strength of mild carbon steel.