A573 Gr.65 steel and Q345R steel comparison and so on steel structure engineering steel has good plasticity, which can make the structure have obvious deformation before being destroyed, so as to avoid brittle failure of structure. The good plasticity of steel can adjust the local peak stress to redistribute the stress, and improve the ductility of components, so as to improve the seismic capacity of the structure. The impact toughness of A573 Gr.65 steel and Q345R steel comparison and so on steel structure engineering steel is good, which can improve the ability of resisting dynamic load and avoid the occurrence of cracks and brittle fracture.
Some A573 Gr.65 steel and Q345R steel comparison, low-alloy high-strength steels have good atmospheric corrosion resistance.In some cases, appropriate precautions can be taken, and they can even be used without being coated in the atmosphere. The elements that improve atmospheric corrosion resistance are copper, phosphorus, silicon, chromium, nickel and molybdenum. The excellent atmospheric corrosion resistance of some low-alloy high-strength steels has led to the formation of new concepts in the design of buildings, bridges and other structures, that is, these structures are constructed with appropriate exposed components of low-alloy high-strength steel.
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 A573 Gr.65 steel and Q345R steel comparison are higher than that of annealed A573 Gr.65 steel and Q345R steel comparison, but the elimination of internal stress is not as good as annealing. The normalizing operation of A573 Gr.65 steel and Q345R steel comparison is simple, the cost is low, the productivity is high, and it is widely used in actual production.
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