Carbon Steel

Carbon steel is primarily composed of iron and carbon, with mechanical properties influenced by carbon content, processing history, and heat treatment. It is widely used where structural performance, predictable manufacturing behavior, and competitive material costs are important.

Common grades include:

• S235JR: A structural steel frequently used for welded frames, supports, and general fabrication.
• S275JR: Provides higher minimum yield strength than S235JR for many structural applications.
• S355JR: Commonly selected for load-bearing structures, machinery frames, and fabricated industrial equipment.
• C45 / AISI 1045: A medium-carbon steel suitable for shafts, pins, gears, and machined mechanical components.
• AISI 1018: A low-carbon steel used for machined parts, fixtures, and general-purpose mechanical components.

Carbon steel supports CNC machining, turning, milling, laser cutting, bending, welding, forging, and selected casting processes. Material selection should consider weldability, hardness, strength, dimensional stability, and required post-processing.

Depending on the application, components may require normalizing, stress relieving, quenching and tempering, or surface hardening. Corrosion protection can be provided through painting, powder coating, zinc plating, hot-dip galvanizing, or other protective treatments.

When requesting quotations, buyers should specify the steel grade, product form, applicable standard, dimensions, manufacturing process, welding requirements, coating specification, and production quantity. Material certificates, including EN 10204 Type 3.1 where appropriate, should be identified before quotation.

Carbon steel is widely used in industrial machinery, construction equipment, material handling systems, agricultural machinery, and mechanical assemblies.