1. Mild carbon steel
Carbon range: ≤0.25%
Characteristic: High plasticity, easy to weld, but low strength, easy to process
Typical application: Iron sheet, steel bar, car body, stamping parts.
Common brand: Q195、Q215、08F、10#
2. Medium carbon steel
Carbon range: 0.25%~0.6%
Characteristic: Strength and toughness balance, heat treatment
Typical application: Mechanical parts (gears, shafts, bolts)
Common brand:45#、50#、Q235
3. High carbon steel
Carbon range: >0.6%
Characteristic: High hardness, wear resistance, but brittleness, poor cutting performance
Typical application: Tools (files, springs, knives)
Common brand: T8、T10、65Mn