The chemical composition of 30CrMnSiA mainly includes the elements of iron, carbon, chromium, manganese, silicon and sulfur. Among them, the carbon content is 0.3%, chromium content is 1.8%, manganese content is 1.5%, and silicon content is 1.0%. The combination of these elements has an important influence on the mechanical properties and corrosion resistance of the material.
30CrMnSiA low alloy steel plate has high strength and good toughness. Its yield strength and tensile strength are 800MPa and 900MPa respectively, and its hardness ranges from 24HRC to 32HRC. In addition, its mechanical property indexes such as elongation, impact toughness, section shrinkage and bending limit are excellent, which can meet the requirements of military equipment for impact resistance, fatigue resistance and corrosion resistance.
In a corrosive environment, the surface of 30CrMnSiA alloy steel plate will form a dense oxide film, thus resisting oxidation and corrosion aggression. In addition, this material shows good corrosion resistance in various organic and inorganic corrosive media, such as water, nitric acid, acetic acid and so on. This gives 30CrMnSiA a long service life in military applications.
