Bearing 40 tons need much steel support
3, according to the classification method(2) forged steel; (2) cast steel; (3) hot rolled steel; (4) cold drawn steel4, by category(1) steel for construction and Engineering: A. plain carbon structural steel; B. low alloy structural steel; C. steel.(2) structural steelA. steel for mechanical manufacture: (a) hardened and tempered structural steel (d); (b) surface hardened structural steel; including carburizing steel, surface alloying steel; (c) easy cutting structural steel; cold plastic formingSteel: cold stamping steel, cold heading steel; B. spring steel; C. bearing steel
Steel is an iron carbon alloy with a carbon content between 0.04%-2.3%. In order to ensure its toughness and plasticity, carbon content is generally not more than 1.7%. The main elements of steel in addition to iron, carbon, and silicon
5, comprehensive classification(1) ordinary steelA. carbon structural steel: (a) Q195; (b) Q215 (A, B); (c) Q235 (A, B, C); (d) Q255 (A, B); (E).B. low alloy structural steelC. general purpose structural steel
Manganese, sulfur, phosphorus, etc.. There are many kinds of classification methods, and the main methods are as follows: seven:1, according to the quality classification(1) ordinary steel (2) high quality steel (3) high quality steel2, according to the chemical classification(1) carbon steel: A. low carbon steel; B. medium carbon steel; C. high carbon steel(2): A. alloy steel and low alloy steel; B. alloy; C. alloy steel
