Influence of several main elements in steel on steel properties 碳(c):随着碳含量的增加, 屈服点和抗拉强度增加, but the plasticity and impact properties decrease. If the carbon content is too high, intergranular corrosion may be unqualified. The boundary between steel and iron is controlled by the C content: <2.11%是钢 • Silicon (Si): Si is a deoxidizer and desulfurizer, 哪种强度和硬度更高, which can improve the hot workability of steel. Chromium (Cr): Chromium can significantly improve the strength, 钢的硬度和耐磨性, but at the same time it will reduce plasticity and toughness. • Nickel (Ni): Nickel can increase the strength of the steel, while maintaining good plasticity and toughness. Influence of several main elements in steel on steel properties Molybdenum (Mo): Adding molybdenum to steel can improve the mechanical properties of steel. • Titanium (Ti): Titanium is a deoxidizer in steel. Reduce effectiveness sensitivity and cold brittleness. Adding a certain amount of titanium to the steel has the ability to resist intergranular corrosion. • Phosphorus (P): Phosphorus is a harmful element in steel, 是什么增加了钢的冷脆性, 焊接性能恶化, 降低可塑性, 冷弯性能下降. Generally, the lower the phosphorus content in steel, the better. • Sulfur (S): Sulfur is a harmful element in steel, which causes the steel to become hot-embrittled, reduces the ductility and toughness of the steel, 锻造过程中容易产生裂纹, and also reduces the corrosion resistance of the steel. Therefore, the sulfur content must be controlled as low as possible. Nitrogen (N): Nitrogen can improve the strength, low temperature toughness and weldability of steel. 提高有效性的敏感性. The right amount of nitrogen can improve the pitting resistance and strength of stainless steel.