Japan S09CK/S10C - Alloy steel - Shanghai Zhilian steel trade

Carbon steel is the carbon content of less than 2%, and a small amount of silicon, manganese and phosphorus, sulfur and other impurities in the iron-carbon alloys. Industrial application of carbon steel carbon content of not more than 1.4%. This is because the carbon content than this amount, the steel showed great hard-brittle, and processing difficulties, loss of production and use value. Carbon steel can be classified according to their different quality carbon structural steel and general quality carbon structural steel II. Provides high-quality carbon structural steel sulfur and phosphorus content than ordinary carbon steel to allow low, so the overall mechanical properties better than ordinary carbon steel.

The definition of carbon steel and steel Five Elements
2% carbon iron-carbon alloy known as steel.
Carbon steel in the chemical composition of five elements is the main component in the material, that is, C, Si, Mn, S, P (carbon, silicon, manganese, sulfur, phosphorus). Second, at the steel-making process will inevitably mixed gases, including O, H, N (oxygen, hydrogen, nitrogen). In addition, the aluminum - silicon-oxygen sedation process, certainly in the steel containing Al, when the Als (Als) ≥ 0. 020%, there are still grain refinement effect.
Also known as non-alloy steel carbon steel, according to the carbon content is divided into low-carbon steel (carbon content of less than 0.25%), medium carbon steel (carbon content of 0.25% -0.60%) and high-carbon steel (carbon content of large at 0.60%).
Classification of Steel
Steel is the carbon content between 0.04% -2.3% of the iron-carbon alloy. In order to ensure its toughness and ductility, carbon content of not more than 1.7%. The main elements of steel, iron, carbon, there are silicon, manganese, sulfur and phosphorus. Classification of steel variety, the main method has the following seven:

Classification according to chemical composition
Carbon Steel: Low carbon steel (C ≤ 0.25%); in carbon (C ≤ 0.25-0.60%); high-carbon steel (C ≤ 0.60%).