Low alloy high strength structural steel is a kind of steel which contains a small amount of alloy elements and is mainly used in construction and engineering structures. Main Chinese steel grades of low alloy high strength structural steel are: Q345A, Q345B, Q345C, Q345D, Q345E, Q390A, Q390B, Q390C, Q390D, Q390E, Q420A, Q420B, Q420C, Q420D, Q420E, Q460C, Q460E, Q500C, Q500D, Q500E, Q550C, Q550D, Q500D, Q620E, Q690C, Q690E, A514 Gr Q quenched and tempered steel.
The company always adheres to the A514 Gr Q quenched and tempered steel principle of "quality first, user first", and takes every cooperation seriously. It is our biggest wish that the steel material, specification and quantity can fully meet the requirements of users. With good reputation, high quality products and low price, we are willing to work together with old and new customers to create a great A514 Gr Q quenched and tempered steel cause. Customers are welcome to visit our company at any time. We are always ready to support you.
In order to easily and economically perform hot or cold processing to make various parts of engineering structures, the low alloy high strength steel must have appropriate forming properties. Like A514 Gr Q quenched and tempered steel, carbon structural steel, low alloy high strength steel can generally be processed in such way, as well as cutting, punching, and machining. Although the yield point of low alloy high strength steel is high, even if the forming operation is deformed quite severely, cold bending presses, drawing machines, presses and other equipment used for carbon structural steel forming can also be used for low alloy high strength steel, but some equipment needs to be modified.
With the increase of temperature, the yield limit of A514 Gr Q quenched and tempered steel will decrease monotonically, but the tensile strength of A514 Gr Q quenched and tempered steel will rise to a high peak value at a certain temperature, and then decrease. This peak temperature is called the blue brittleness temperature of A514 Gr Q quenched and tempered steel. Near the blue brittleness temperature, the A514 Gr Q quenched and tempered steel strength increases and the plasticity decreases. The elongation and section shrinkage of A514 Gr Q quenched and tempered steel increase with the increase of temperature, but there is a low peak at the blue brittleness temperature. The blue brittleness temperature of low carbon steel ranges from 200 ℃ to 250 ℃. The blue brittleness of low alloy steel is not obvious as that of low carbon steel, and the blue brittleness temperature is higher.
We are willing to cooperate sincerely with you with high-quality A514 Gr Q quenched and tempered steel products and sincere service to expand the market and create brilliant! We will work hard to create a first-class steel company and provide you with faster and more considerate after-sales services! Moreover, our shipbuilding steel plates have been certified by the nine countries' classification societies including DNV, ABC, GL, LR, BV, CCS, RINA, NK, and KR. The quality assurance system has passed ISO9001-2000 standard certification.
