Introduction: What do Q420B+Q420C+Q420D+Q420E all mean?

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What are Q420B+Q420C+Q420D+Q420E all? What types of steel plates are they? For information on price increases, please contact (#18240615609#). Q420C is a low-alloy high-strength structural steel. The number 420 in Q420 steel denotes its yield strength, while B+C+D+E indicate the properties of the steel at room temperature, -0 degrees, -20 degrees, and -40 degrees. Q420C is suitable for use in power transmission towers, various types of cranes, heavy trucks, oil drilling rigs, high-temperature fans, large excavators, dump trucks, drilling equipment, hydraulic supports in coal mines, and steel structures. Its tensile strength is slightly higher; the tensile strength of Q235 steel is 235 N/mm^2, whereas that of Q420 is 420 N/mm^2. Due to its low carbon content, it cannot be subjected to heat treatment processes, and therefore it cannot be used to manufacture shafts, gears, or similar components. But it is excellent when made into steel plates, with strength much higher than that of Q235. Q420 has high strength and good fatigue resistance ； High toughness and low brittle transition temperature ； Good cold formability and weldability ； It has good corrosion resistance and a certain level of wear resistance.