High quality carbon structural steel can be divided into three categories based on its carbon content: low carbon steel (C ≤ 0.25%), medium carbon steel (C is 0.25-0.6%), and high carbon steel (C>0.6%).
High quality carbon structural steel can be divided into two groups based on its manganese content: normal manganese content (0.25% -0.8% manganese) and higher manganese content (0.70% -1.20% manganese).
The latter has better mechanical and processing properties. 1. High quality carbon structural steel hot-rolled thin steel plates and strips are used in the automotive, aviation industry, and other sectors.
The steel grades are boiling steel: 08F, 10F, 15F; Sedative steel: 08, 08AL, 10, 15, 20, 25, 30, 35, 40, 45, 50. 25 and below are low-carbon steel plates, while 30 and above are medium carbon steel plates. 2. High quality carbon structural steel hot-rolled thick steel plates and wide steel strips are used for various mechanical structural components. The steel grades include low carbon steel such as 05F, 08F, 08, 10F, 10, 15F, 15, 20F, 20, 25, 20Mn, 25Mn, etc; Medium carbon steel includes: 30, 35, 40, 45, 50, 55, 60, 30Mn, 40Mn, 50Mn, 60Mn, etc; High carbon steel includes: 65, 70, 65Mn, etc.
