Japanese steel (JIS series) of the grade of ordinary structural steel mainly composed of three parts.
The first part represents the material, such as: s (steel) for steel, F (Ferrum) to indicate iron;
The second part indicates the different shape, type, use, such as P (plate) expression Board, T (YouTube) means tube, K (Kogu) means tool;
The third part represents the characteristic number, generally the lowest tensile strength. such as: Ss400 the first s for Steel, the second s means "structure", 400 is the lower tensile strength 400MPa, the overall tensile strength is 400MPa of ordinary structural steel.
Note: SPCC said that the general use of cold-rolled carbon steel sheet and strip, the equivalent of China's C195-215A brand, of which the third letter C is the cold of the abbreviation, the need to ensure tensile test, at the end of the grade plus T for SPCTT.
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