Alloy Steel Bar 0CrV GB/T 3077-1999
Steel classification
Steel is an iron-carbon alloy with a carbon content between 0.04% and 2.3%. 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 are silicon, manganese, sulfur, phosphorus, etc. There are several ways to classify steel, and the main methods are as follows:
1. Classification by quality (1) ordinary steel (P Less than or equal to 0.045%, S Less than or equal to 0.050%) (2) Steel high quality steel (P, S Less than or equal to 0.035%) (3) High quality advanced steel (P<0.035%, S≤0.030%)
2. Classification according to chemical composition 1) Carbon steel: a. low carbon steel (C Less than or equal to 0,25%); b. Medium carbon steel (0,25
