Carbon steel classification and classification method detailed explanationchemical
COMPOSITION CLASSIFICATION
1. Low carbon steel (C≤0.25%) : used to manufacture some important mechanical parts.
2. Medium carbon steel (0.25%< C≤0.6%) : Used for making mechanical parts, bearings, springs, hammerheads, knives, pliers, etc.
3. High carbon steel (C> 0.6%) : Used in the manufacture of tools, wrenches, spring reeds and spring hinges.
USE CLASSIFICATION
1. Structural steel: generally low carbon steel, used for the manufacture of Bridges, buildings, machine parts, ships and so on.
2. Mechanical steel: generally carbon steel, used to manufacture bearings, chains, gears, shafts and so on.
3. Tool steel: generally high carbon steel, used for making tools, stamping dies and so on.
MANUFACTURING PROCESS CLASSIFICATION
1. Forged steel: mostly medium and high carbon steel, used for manufacturing heavy duty machinery, automobile bearings, etc.
2. Cast steel: mostly low and medium carbon steel, used for manufacturing cars, trains, aircraft castings and so on
CLASSIFICATION OF CARBON CONTENT
1. Ultra-low carbon steel (C≤0.08%) : mainly used in the manufacture of automotive sheet metal, electrical shell and so on.
2. Low carbon steel (0.08%< C≤0.18%) : mainly used for cold drawn steel wire, steel pipe and other products.
3. Medium carbon steel (0.18%< C≤0.50%) : mainly used for manufacturing machine tools, automotive rocker arms, frames and other industrial parts.
4. High carbon steel (C> 0.50%) : mainly used in the manufacture of carbide materials, tools, instruments and other high-precision equipment.
