What do SPCCT and SPCD stand for?
SPCCT represents cold-rolled carbon steel sheets and steel strips with guaranteed tensile strength under Japanese JIS standards, while SPCD represents cold-rolled carbon steel sheets and steel strips for stamping under Japanese JIS standards. The corresponding Chinese standard is 08AL ( 13237) High quality carbon structural steel.
In addition, regarding the quenching and tempering codes of cold-rolled carbon steel sheets and steel strips, the annealing state is A, the standard quenching and tempering is S, 1/8 hardness is 8, 1/4 hardness is 4, 1/2 hardness is 2, and all Hardness is 1. The surface processing code is D for matte finish rolling and B for bright finish rolling. For example, SPCC-SD represents standard quenched and tempered, matte finish-rolled cold-rolled carbon sheets; SPCCT-SB represents standard quenched and tempered, bright-rolled cold-rolled carbon sheets that require guaranteed mechanical properties; SPCC-1D represents Hard matte finish rolled cold rolled carbon steel sheet.
The expression method of steel grades for mechanical structures is: S + carbon content + letter code (C, CK), where the carbon content is expressed by the intermediate value * 100, the letter C represents carbon, and the letter K represents carburizing steel. For example, the carbon content of carbon rolled plate S20C is 0.18-0.23%.
