Medium & Heavy Plate price /Strength low-alloy steel
wageni chanzo： tarehe：2014-5-16 17:12:33
Medium & Heavy Plate price
/Yield point steel structure determines the stress is not permanent deformation of the structure can bear. /Hot Rolled Coils Factory
/Typical minimum yield point of carbon structural steel for 235MPa. The minimum yield point of the typical high strength low alloy steel is 345MPa. Thus, according to the ratio between the yield point , the use of high-strength low-alloy steel, carbon structural steel allowable stress than 1.4 times higher . Compared with carbon steel , low- alloy high strength steel structural members can be reduced in size to make weight. Care must be taken , for possible bent components, which allows the force must also be amended to ensure that the structure to achieve robustness . Sometimes replacing carbon steel cable with high strength low alloy steels , but does not change the cross-sectional dimensions , whose sole purpose is not to increase the weight in the circumstances to obtain the intensity of higher and more durable structure. Vehicle weight saving of the structure of the most important , so that you can transport a heavier weight and reduce energy consumption.Deformed steel bar
Often by adding a small amount of niobium or vanadium, or titanium to increase the strength of steel. Hardening by precipitation of these elements is to achieve the purpose of strengthening economically . For the purpose of the various other alloying elements can be added to achieve the purpose of strengthening. For the hot-rolled sheet , and coiling the hot rolling process strictly controlled to achieve the desired uniform intensity. For the cold-rolled sheet , and using a special annealing process resulting in a higher level of intensity , while also maintaining good formability .
The latest development is obtained by using the critical annealing and rapid cooling martensitic and ferritic two-phase microstructure ( or two-phase microstructure ) of high-strength low-alloy steels . This steel sheet products have excellent formability, Qu eye point is generally 310 ~ 345MPa, strain through automotive parts produced by pressure forming , the yield point can be increased to 550MPa or higher.