【Stainless steel composite pipe - have an impact on】
Date:2009-9-20 14:43:37
The quality and performance of steel is determined in accordance with the needs of the different needs of different elements have.
(1) carbon; the higher carbon content, the higher the hardness of the gang, but its plasticity and toughness on the worse.
(2) sulfur; is harmful objects in steel, a higher sulfur content of steel in high-temperature pressure processing, it is easy to rattle, usually called the hot brittle.
(3) P; enable the plasticity and toughness of steel decreased significantly, especially in the more serious at low temperatures, a phenomenon called cold brittleness. In high-quality steel, sulfur and phosphorus should be strictly controlled. However, on the other hand, in the low-carbon steel contains a higher sulfur and phosphorus, can be prone to cutting off, to improve the cutting of steel can be beneficial.
(4) Mn; to increase the strength of steel to weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of steel, a high volume of high-manganese steel (high manganese steel) has a good resistance to abrasion and other physical properties.
(5) silicon; it can improve the hardness of steel, but the decline in plasticity and toughness, electrical steel used contains a certain amount of silicon, to improve the soft magnetic properties.
(6) W; to increase the red hardness of steel and heat strong, and can improve the wear resistance of steel.
(7) chromium; can improve the steel hardenability and wear resistance of steel to improve corrosion resistance and anti-oxidation.
(8) V; can refine the grains of steel, steel to increase strength, toughness and wear resistance. When it melt into the austenite at high temperatures, the increased hardenability of steel; the other hand, when it exists in the form of carbide, it will reduce its hardenability.
(9) Mo; can significantly improve the hardenability of steel and heat strong to prevent temper brittleness and improve Jiao remanence and coercivity.
(10) Titanium; can refine the grains of steel, thereby enhancing the strength and toughness of steel. In stainless steel, titanium steel to eliminate or reduce the inter-crystalline corrosion.
(11) nickel; can improve strength and toughness of steel to improve hardenability. Content is high, can significantly change a number of alloy steel and physical performance, enhance the corrosion resistance of steel.
(12) B; when the steel contains a trace amount (0.001 - 0.005%) of boron, the steel hardenability improvement can be multiplied.
(13) aluminum; can refine the grains of steel, low carbon steel of the statute of limitations inhibition. Steel at low temperatures to improve the toughness, but also improve the oxidation resistance of steel to improve wear resistance and fatigue strength of steel and so on.
(14) copper; the prominent role it is to improve the ordinary low-alloy steel atmospheric corrosion resistance, especially with the use of phosphorus becomes more apparent.
(1) carbon; the higher carbon content, the higher the hardness of the gang, but its plasticity and toughness on the worse.
(2) sulfur; is harmful objects in steel, a higher sulfur content of steel in high-temperature pressure processing, it is easy to rattle, usually called the hot brittle.
(3) P; enable the plasticity and toughness of steel decreased significantly, especially in the more serious at low temperatures, a phenomenon called cold brittleness. In high-quality steel, sulfur and phosphorus should be strictly controlled. However, on the other hand, in the low-carbon steel contains a higher sulfur and phosphorus, can be prone to cutting off, to improve the cutting of steel can be beneficial.
(4) Mn; to increase the strength of steel to weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of steel, a high volume of high-manganese steel (high manganese steel) has a good resistance to abrasion and other physical properties.
(5) silicon; it can improve the hardness of steel, but the decline in plasticity and toughness, electrical steel used contains a certain amount of silicon, to improve the soft magnetic properties.
(6) W; to increase the red hardness of steel and heat strong, and can improve the wear resistance of steel.
(7) chromium; can improve the steel hardenability and wear resistance of steel to improve corrosion resistance and anti-oxidation.
(8) V; can refine the grains of steel, steel to increase strength, toughness and wear resistance. When it melt into the austenite at high temperatures, the increased hardenability of steel; the other hand, when it exists in the form of carbide, it will reduce its hardenability.
(9) Mo; can significantly improve the hardenability of steel and heat strong to prevent temper brittleness and improve Jiao remanence and coercivity.
(10) Titanium; can refine the grains of steel, thereby enhancing the strength and toughness of steel. In stainless steel, titanium steel to eliminate or reduce the inter-crystalline corrosion.
(11) nickel; can improve strength and toughness of steel to improve hardenability. Content is high, can significantly change a number of alloy steel and physical performance, enhance the corrosion resistance of steel.
(12) B; when the steel contains a trace amount (0.001 - 0.005%) of boron, the steel hardenability improvement can be multiplied.
(13) aluminum; can refine the grains of steel, low carbon steel of the statute of limitations inhibition. Steel at low temperatures to improve the toughness, but also improve the oxidation resistance of steel to improve wear resistance and fatigue strength of steel and so on.
(14) copper; the prominent role it is to improve the ordinary low-alloy steel atmospheric corrosion resistance, especially with the use of phosphorus becomes more apparent.
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