Q550B steel is a low-alloy high-strength structural steel grade. Steel Q550A is not required for impact toughness test; Q550B is for impact toughness test at room temperature (20℃); Q550C is for 0℃ impact toughness test; Q550D is for impact toughness test at -20℃; Q550E grade is for impact toughness test Make impact toughness test at -40℃. The impact toughness test uses Charpy V-notch specimens. The impact toughness index is Akv.
This week, the price of EN10025-4 S420ML steel futures rose sharply, and the market mentality was positive. On the one hand, the recent arrival of steel mills is still not much, which has a certain support for the price. On the other hand, the business confidence in the future market is gradually restored, and the willingness to support the price is strong. Today, the move up momentum of EN10025-4 S420ML steel futures weakened. In the short term, there may be a slight adjustment pattern, but the probability of a sharp decline is small. It is expected that the EN10025-4 S420ML steel market will be mainly volatile tomorrow.
As a common steel plate in the steel market, EN10025-4 S420ML steel, manganese steel plate has the following characteristics. First, good toughness, stretching and crimping can be done well. Second, the bearing strength of manganese steel plate is good and it can bear a lot of gravity. Third, the EN10025-4 S420ML steel, manganese steel plate is easy to weld, easy to process finished products, and its price is relatively low. Fourth, manganese steel plate has good corrosion resistance, and long service life. Fifth, the manganese steel plate has good mechanical properties, low temperature performance, good plasticity and weldability.