A common Japanese brand in steel plates for general and mechanical structures

1, Japanese steel (JIS series) in the grade of ordinary structural steel is mainly composed of three parts: the first part of the material, such as: S (Steel) that steel, F (Ferrum) that iron; the second part of the different shapes, types , Uses, such as P (Plate) said plate, T (Tube) said tube, K (Kogu) said tools; the third part of the characteristic number, generally the lowest tensile strength. For example: SS400 - the first S for Steel, the second S for Structure, 400 for the lower limit tensile strength 400 MPa, and overall for general structural steels with a tensile strength of 400 MPa. # i/ Z# K* V- I% x& [! h8 R( i . M0 l. E2 " o2 l9 P

2. SPHC - The first S is the abbreviation of Steel Steel, P is the abbreviation of Plate Plate, H is the abbreviation of Heat Heat, and C is the abbreviation of Commercial Commercial. The overall expression generally uses hot rolled steel plate and strip. 6 z7 w2 ]2 w, F" x+ v( P- Q

3, SPHD - said stamping with hot-rolled steel and strip. Z- U4 s" N6 a7 n! a0 a T

4, SPHE - said deep-drawn hot-rolled steel plate and strip. , t& T% q! 2 s9 Y

5, SPCC - shows the general use of cold-rolled carbon steel sheet and strip, equivalent to China's Q195-215A grade. The third letter, C, stands for Cold Cold. To ensure the tensile test, add T to SPCCT at the end of the grade. % [* X, @% j% a4 R: d+ _4 e5 Y1 t$ }1 B; s : S5 @! x) I$ D |* I7 }6 a2 l# u

6, SPCD - said stamping with cold-rolled carbon steel sheet and strip, equivalent to China 08AL (13237) high-quality carbon structural steel. 8 m( X( D0 s) 1 ( i . f# m0 K, w6 i" f- S

7, SPCE - said deep-drawn cold-rolled carbon steel sheet and strip, equivalent to China 08AL (5213) deep-drawn steel. When it is necessary to ensure non-timeliness, add N to SPCEN at the end of the brand. Cold-rolled carbon steel sheet and steel strip tempering code: Annealed state is A, standard tempering is S, 1/8 hard is 8, 1/4 hard is 4, 1/2 hard is 2, hard is 1. Surface processing code: matt finish D, bright finish B. For example, SPCC-SD is a standard cold-rolled carbon sheet for standard tempered and matt finish rolling. Another example is SPCCT-SB, which is a cold-rolled carbon sheet that requires standard conditioning, bright processing, and mechanical properties. 8 I/C. e9 g" S; M c- P# ~

8. The steel grades of JIS mechanical structure are indicated by: S + carbon content + letter code (C, CK), in which the carbon content is represented by the median value × 100, and the letter C: indicates carbon K: indicates carburizing steel. Such as the carbon knot board S20C its carbon content is 0.18-0.23%.