S235J0 steel plate chemical composition specification:
1. Chromium (Cr): In structural steel and steel, chromium can significantly improve strength, hardness and wear resistance, but at the same time reduce plasticity and toughness. Chromium can improve the oxidation resistance and corrosion resistance of steel, so it is an important alloying element for stainless steel and heat-resistant steel.
2. Silicon (si): It can increase the hardness of steel, but its plasticity and toughness decrease. The steel for electrical purposes contains a certain amount of silicon, which can improve the soft magnetic properties.
3. Manganese (Mn): It can improve the strength of steel, weaken and eliminate the adverse effects of sulfur, and improve the hardenability of steel. High-alloy steel (high manganese steel) with high manganese content has good resistance abrasiveness and other physical properties
4.Vanadium (V): It can refine the grain structure of steel and improve the strength, toughness and wear resistance of steel. When it melts into austenite at high temperature, it can increase the hardenability of steel; on the contrary, when it exists in the form of carbide, it will reduce its hardenability.
