What are the classifications of carbon steel?

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1. according to the use of carbon steel can be divided into carbon structural steel, carbon tool steel and free cutting structural steel three categories, carbon structural steel is divided into engineering construction steel and machine manufacturing structural steel two.

2. according to the smelting method can be divided into open hearth steel, converter steel.

3. according to the deoxidation method can be divided into boiling steel (F), killed steel (Z), semi-killed steel (b) and special killed steel (TZ).

4. according to the carbon content can be divided into low carbon steel (WC≤0.25%), medium carbon steel (WC0.25%-0.6%) and high carbon steel (WC > 0.6%).

5. according to the quality of steel, carbon steel can be divided into ordinary carbon steel (containing phosphorus, sulfur is higher), high-quality carbon steel (containing phosphorus, sulfur is lower) and senior quality steel (containing phosphorus, sulfur is lower) and extra high quality steel.