Q345B material is a low carbon alloy steel grade with good overall performance, low temperature performance, cold stamping performance, welding performance and machinability. Q345 serues steel is widely used in bridges, vehicles, ships, buildings, pressure vessels. Q represents the yield of this material, and the number 345 refers to the yield value of this material, which is around 345MPa. As the thickness of the material increases, its yield value decreases.
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 10025 5 corrosion resistant steel pdf are higher than that of annealed en 10025 5 corrosion resistant steel pdf, but the elimination of internal stress is not as good as annealing. The normalizing operation of en 10025 5 corrosion resistant steel pdf is simple, the cost is low, the productivity is high, and it is widely used in actual production.
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