steel quality and performance is based on the needs of different needs, different elements of content.
(1) carbon; the higher the carbon content, just the hardness of the higher, but its plasticity and toughness, the worse.
(2) sulfur; steel in the hazardous debris, and the high sulfur steel at high temperature pressure processing, it is easy to brittle fracture, commonly called hot brittleness.
(3) P; make steel plasticity and toughness decreased significantly more severe at low temperatures, a phenomenon called cold brittleness. High quality steel, sulfur and phosphorus must be strictly controlled. However, look on the other hand, a high content of sulfur and phosphorus in low-carbon steel can be cut easily broken, and is beneficial to improve the steel machinability.
(4) manganese; can improve the strength of steel to weaken and eliminate the adverse effects of sulfur, and can improve the hardenability of the steel, high manganese content of high-alloy steel (high-manganese steel) has a good wear resistance and other physical properties.
(5) silicon; it can increase the hardness of steel, but the decline in plasticity and toughness, a certain amount of silicon electrical steel can improve the soft magnetic properties.
Tungsten (6); can improve the steel red hard and heat resistance, and can improve the wear resistance of steel.
(7) chromium; can improve the hardenability and wear resistance of steel can improve the corrosion resistance of steel and antioxidant effects. (8) vanadium; can refine the grain structure of steel to improve strength, toughness and wear resistance of steel. Into the austenite at high temperature melting, the increase of steel hardenability; the contrary, when the carbide forms, it will reduce its hardenability.
(9) Mo; can significantly improve the steel hardenability and heat resistance, and prevent temper brittleness, improve the remanence and coercivity.
(10) titanium; can refine the grain structure of steel, thereby enhancing the strength and toughness of the steel. In stainless steel, titanium, can eliminate or reduce the steel to intergranular corrosion.
(11) Nickel; can improve the strength and toughness of the steel to improve hardenability. Content is high, can significantly change the steel and alloys, some physical properties, to improve the corrosion resistance of steel.
(12) boron; when the steel contains a small amount of (0.001 - 0.005%), boron, steel hardenability can exponentially improve.
(13) aluminum; can refine the grain structure of steel, inhibition of low carbon steel aging. Improve the toughness of the steel at low temperatures, but also improve the oxidation resistance of steel to improve wear resistance and fatigue strength of steel.
(14) copper; its prominent role in improving ordinary low-alloy steel atmospheric corrosion resistance, especially when used in conjunction with and phosphorus more obvious. |
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Disclaimer: The above "Elements on steel properties" header information shown by the enterprises themselves, the authenticity of the content, accuracy and legitimacy of responsibility by the publisher. China Steel Harbor does not undertake any guarantee responsibility.
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