The difference between Q355D and Q355NE
Q355D is a low-alloy high-strength structural steel plate for general structures and engineering. The implementation standard is: GB/T1591-2018. The name of the steel plate consists of the first letter Q in Chinese pinyin representing the word "yi" for yield strength, the specified minimum upper yield strength value, the intersection There are four parts: cargo status code and quality grade (B, C, D, E, F).
Q355NE is a low-alloy high-strength steel. The implementation standard is: GB/T1591-2018, where "Q" means yield strength, 355 means that the yield strength of this steel is 355MPa, Q355A grade, does not make impact; Q355B grade, is 20 degrees Normal temperature impact; Q355C level, 0 degree impact; Q355D level, -20 degree impact; Q355E level, -40 degree impact. When the steel plate is required to have thickness direction properties, a symbol representing the thickness direction (Z direction) performance level is added to the steel grade. The N in Q355NE represents normalizing rolling or normalizing.
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