As the thickness and hardness of A514 grade Q QT steel plate increase, the tendency to crack at the cutting edge increases. In order to prevent the A514 grade Q QT steel plate from cutting cracks, preheating should be carried out before A514 grade Q QT steel plate cutting. Special attention should be paid to preheating to make the entire A514 grade Q QT steel plate interface evenly heated to avoid local overheating in the area contacting the heat source. If the whole A514 grade Q QT steel plate cannot be preheated, the partial preheating method can be used instead.
ASTM A572 Grade 50, used in large-scale construction, A514 grade Q QT steel plate is an extremely strong alloy with a yield strength of 65, 000 psi, an allowable bending stress of 39, 000 psi and a future as the high-performance replacement of ASTM A36 steel.
As the basic processing materials and building materials, the medium and heavy plate is an important purchasing material for many manufacturers and construction enterprises, so the grasp of the latest price rise and fall of the medium and heavy plate, A514 grade Q QT steel plate is directly related to the cost and profit of enterprises. Therefore, it is necessary for purchasing staff to learn how to predict. Today, we share the latest price rise and fall skills, how to predict the price trend of medium and heavy plate, A514 grade Q QT steel plate.
According to South Korea newsis reported on March 12, Korea iron and steel association statistics show that in February, South Korea's domestic A514 grade Q QT steel plate steel exports to 2.44 million tons, down 2.4 percent year on year, after January down 3 percent, the second consecutive month of decline. In the past three years, South Korea's steel exports have decreased year by year, from 31.67 million tons in 2017 to 30.44 million tons in 2018 and 30.38 million tons in 2019. Instead, South Korea's A514 grade Q QT steel plate steel imports increased last year. As China's economy slows and steel prices fall, Chinese steel is pouring into South Korea, analysts say.
