Plate products A709 grade 50 carbon steel plate order online: 14*2150*9300, 14*2400*10000, 14*2400*9900, 16*2100*10650, 16*2150*10000, 16*2150*10250, 16*2150*10350, 16*2150*10400, 16*2150*10450, 16*2150*10750, 16*2150*10950, 20*1950*9000, 20*1950*9150, 20*1950*9350, 20*1950*9550, 20*1950*9700, 20*1950*9750, 20*2100*10700, 20*2100*10750, 20*2100*10800, 20*2100*11600.
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The quality grade symbols of Q235 steel plate are A, B, C and D respectively. Different grades represent different impact temperatures. A709 grade 50 carbon steel plate, Q235A is not required for impact toughness test; Q235B is required for impact toughness test at room temperature (20 ℃); Q235C is required for impact toughness test at 0 ℃; Q235D is required for impact toughness test at - 20 ℃. For the above-mentioned B, C and D grade steels, Akv ≥27J is required under different temperature requirements. At different impact temperature, the impact value is also different.
Penetration testing technology is only suitable for detecting surface defects. It uses penetrant to apply on the surface of the A709 grade 50 carbon steel plate steel plate, then wipes the excess penetrant with the cleaning solution, and then smears the developer. The penetrant remaining in the defect is adsorbed by the developing material, so as to observe the shape of the defect and determine the type of defect. This A709 grade 50 carbon steel plate method requires multiple wipes before and after the inspection, the process is more cumbersome, and can not detect internal defects and rough and dirty steel plates.
