Common chemical elements on the properties of steel
Carbon (C): increase of carbon content in steel, yield point and tensile strength increased, but decreased ductility and impact! carbon steel can increase the sensitivity of the cold brittleness and aging.
Silicon (Si): Si can significantly improve the steel elastic limit, yield point and tensile strength, it is widely used as spring steel. Silicon content increases, will reduce steel welding performance.
Manganese (Mn): to improve the toughness of steel, and has high strength and hardness; improve the hardenability of steel to improve the performance of thermal processing of steel, manganese increased, weakening the steel corrosion resistance and reduce the welding performance.
Phosphorus (P): Phosphorus is harmful elements in steel, increased steel, cold brittleness, deterioration of the welding performance and reduce the plasticity, the cold bending performance deterioration.
Sulfur (S): Usually a harmful element to produce hot shortness of steel, lower ductility and toughness of steel in the forging and rolling caused by cracks. Detrimental to the welding performance of sulfur and reduce corrosion resistance.
Chromium (Cr): the structural steel and tool steel, chromium can significantly improve the strength, hardness and wear resistance, but lower ductility and toughness.
Nickel (Ni): Ni can improve the strength of steel, yet maintain good ductility and toughness. Nickel has a higher resistance to acid corrosion, corrosion under high temperature and heat capacity.
Molybdenum (Mo): Molybdenum steel, grain refinement can improve the hardenability and thermal strong performance at high temperatures to maintain sufficient strength and creep resistance (at high temperature under long-term stress, deformation, known as creep .)
Titanium (Ti): Titanium is a strong deoxidizing agent in steel. It makes the internal organization of dense steel, grain refinement force; reduce aging sensitivity and cold brittleness. To improve the welding performance.
Vanadium (V): V is an excellent steel deoxidation agent. Steel 0.5% of vanadium can be refined grains organizations to improve the strength and toughness. The formation of vanadium carbide and carbon, under high pressure and temperature can increase the resistance to hydrogen corrosion.
Carbon (C): increase of carbon content in steel, yield point and tensile strength increased, but decreased ductility and impact! carbon steel can increase the sensitivity of the cold brittleness and aging.
Silicon (Si): Si can significantly improve the steel elastic limit, yield point and tensile strength, it is widely used as spring steel. Silicon content increases, will reduce steel welding performance.
Manganese (Mn): to improve the toughness of steel, and has high strength and hardness; improve the hardenability of steel to improve the performance of thermal processing of steel, manganese increased, weakening the steel corrosion resistance and reduce the welding performance.
Phosphorus (P): Phosphorus is harmful elements in steel, increased steel, cold brittleness, deterioration of the welding performance and reduce the plasticity, the cold bending performance deterioration.
Sulfur (S): Usually a harmful element to produce hot shortness of steel, lower ductility and toughness of steel in the forging and rolling caused by cracks. Detrimental to the welding performance of sulfur and reduce corrosion resistance.
Chromium (Cr): the structural steel and tool steel, chromium can significantly improve the strength, hardness and wear resistance, but lower ductility and toughness.
Nickel (Ni): Ni can improve the strength of steel, yet maintain good ductility and toughness. Nickel has a higher resistance to acid corrosion, corrosion under high temperature and heat capacity.
Molybdenum (Mo): Molybdenum steel, grain refinement can improve the hardenability and thermal strong performance at high temperatures to maintain sufficient strength and creep resistance (at high temperature under long-term stress, deformation, known as creep .)
Titanium (Ti): Titanium is a strong deoxidizing agent in steel. It makes the internal organization of dense steel, grain refinement force; reduce aging sensitivity and cold brittleness. To improve the welding performance.
Vanadium (V): V is an excellent steel deoxidation agent. Steel 0.5% of vanadium can be refined grains organizations to improve the strength and toughness. The formation of vanadium carbide and carbon, under high pressure and temperature can increase the resistance to hydrogen corrosion.
