phosphorus (P): In general, phosphorus is harmful elements in steel, increased cold brittleness of steel, welding performance deterioration, reduce

manganese (Mn): in steelmaking process, manganese is a good deoxidizer and desulfurizer, generally 0.30-0.50% manganese steel. In carbon steel adde

Silicon (Si): plus silicon as a reducing agent in the steel making process and deoxidizer, it killed steel containing 0.15-0.30% silicon. If the st

carbon (C): carbon content in steel increases, the yield point and the tensile strength increased, but reduced ductility and impact resistance, whe