Wholesale price of EN steel grade S420N material matrial
The Shipbuilding steel plate can be divided into general strength EN steel grade S420N material structural steel and high strength structural steel according to its minimum yield point strength level.BBN supplies and exports 3 types of ship steel, Ordinary Strength Steel Plate, High-tensile Strength Steel Plate and EN steel grade S420N material Extra High-tensile Strength Steel Plate. All steel plate product can be manufactured according to Society LR, ABS, NK, GL, DNV, BV, KR, RINA, CCS, etc.
The main reference for structural design of steel structure engineering is the static and dynamic characteristics of the steel used under various actions, such as elasticity, plasticity, strength, toughness, fatigue and other mechanical properties. Therefore, the EN steel grade S420N material and so on steel used in the construction of steel structure engineering will limit its strength, plasticity, impact toughness and weldability. Steel structure engineering requires high tensile strength and yield point of steel. High yield point can reduce the cross-section of the component, so as to reduce the weight, save steel and reduce the cost. High tensile strength can increase the safety of the structure.
Normalizing is to heat the steel parts to 30~80℃above the critical temperature for a period of time. Then the parts are taken out of the furnace and cooled in air. Since the cooling rate of normalizing is faster than that of annealing, the strength and hardness of normalized EN steel grade S420N material are higher than that of annealed EN steel grade S420N material, but the elimination of internal stress is not as good as annealing. The normalizing operation of EN steel grade S420N material is simple, the cost is low, the productivity is high, and it is widely used in actual production.
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