hot rolled RA 40 hull steel plate vs boiler steel plate

SA516 grade 55, SA516 grade 60, SA516 grade 65, SA516 grade 70. These four grades hot rolled RA 40 hull steel plate are mainly defined by different tensile and yield strength ranges, which are affected by carbon content.

Weathering steel is characterized in that the alloy composition and weight percentage content. The chemical composition C≤0.12, Si: 0.25 ～ 0.75, Mn: 0.20 ～ 0.50, P: 0.07 ～ 0.15, S≤0.03, Cu: 0.25 ～ 0.55 , Cr: 0.30 ～ 1.25, Ni≤0.65, and the rest are Fe and trace impurities. Weathering steel sheet hot rolled RA 40 hull steel plate is mainly used for steel structures such as railways, vehicles, bridges, and towers that are exposed to the atmosphere for a long time.

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 hot rolled RA 40 hull steel plate are higher than that of annealed hot rolled RA 40 hull steel plate, but the elimination of internal stress is not as good as annealing. The normalizing operation of hot rolled RA 40 hull steel plate is simple, the cost is low, the productivity is high, and it is widely used in actual production.

Our steel products are widely used in petroleum and natural gas, chemical industry, shipbuilding, automobile manufacturing, power generation, mining, and other industries. The products hot rolled RA 40 hull steel plate are sold in more than 20 provinces, cities and all over the world. The company has strong technical force, complete production equipment, advanced production technology, perfect testing methods, and high-quality products.

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