Definition of steel

Update:10 Nov 2018
Summary:

Steel is a material such as steel ingots, billets, and […]

Steel is a material such as steel ingots, billets, and the like that are formed into various shapes, sizes, and properties required by daily processing.

Steel is an iron-carbon alloy with a carbon content between 0.04% and 2.3%. (In theory, the steel with a carbon content of less than 2.11% is generally referred to as steel.) In order to ensure its toughness and plasticity, the carbon content generally does not exceed 1.7%. In addition to iron and carbon, the main elements of steel include silicon, manganese, sulfur, and phosphorus.

Classified by quality

(1) Ordinary steel (P≤0.045%, S≤0.050%)

(2) High-quality steel (P and S are ≤0.035%)

(3) High-quality steel (P≤0.035%, S≤0.030%

Classified by chemical composition

(1) Carbon steel: a. low carbon steel (C ≤ 0.25%); b. medium carbon steel (C ≤ 0.25 ~ 0.60%); c. high carbon steel (0.60% ≤ C ≤ 2.11%).

(2) alloy steel: a. low alloy steel (total content of alloying elements ≤ 5%); b. medium alloy steel (total content of alloying elements is 5~10%); c. high alloy steel (total content of alloying elements > 10 %).

PREV :       NEXT :