Required Section Modulus Calculator (optional)
T-Section (CT) 60 items
* Commonly available sizes may be limited depending on the manufacturer.
No. Designation H
[mm]
B
[mm]
t1
[mm]
t2
[mm]
r1
[mm]
A
[cm²]
w
[kg/m]
Ix
[cm⁴]
ix
[cm]
Zx
[cm³]
Iy
[cm⁴]
iy
[cm]
Zy
[cm³]
1 CT-50×50×5×7 50 50 5 7 8 5.925 4.65 11.8 1.41 3.18
7.39 1.12 2.96
2 CT-50×100×6×8 50 100 6 8 10 10.95 8.6 16.1 1.21 4.03
66.9 2.47 13.4
3 CT-62.5×60×6×8 62.5 60 6 8 9 8.418 6.61 27.5 1.81 5.96
14.6 1.32 4.87
4 CT-62.5×125×6.5×9 62.5 125 6.5 9 10 15.16 11.9 35 1.52 6.91
147 3.11 23.5
5 CT-75×75×5×7 75 75 5 7 8 8.925 7.01 42.6 2.18 7.46
24.7 1.66 6.6
6 CT-74×100×6×9 74 100 6 9 8 13.17 10.3 51.7 1.98 8.84
75.2 2.39 15
7 CT-75×150×7×10 75 150 7 10 11 20.07 15.8 66.4 1.82 10.8
282 3.75 37.6
8 CT-87.5×90×5×8 87.5 90 5 8 8 11.45 8.99 70.6 2.48 10.4
48.7 2.06 10.8
9 CT-87.5×175×7.5×11 87.5 175 7.5 11 12 25.61 20.1 115 2.12 15.9
492 4.38 56.2
10 CT-99×99×4.5×7 99 99 4.5 7 11 11.59 9.1 93.8 2.84 12.1
56.8 2.21 11.5
11 CT-100×100×5.5×8 100 100 5.5 8 8 13.33 10.5 114 2.93 14.8
66.9 2.24 13.4
12 CT-97×150×6×9 97 150 6 9 8 19.08 15 124 2.56 15.8
253 3.65 33.8
13 CT-100×200×8×12 100 200 8 12 13 31.77 24.9 184 2.41 22.3
801 5.02 80.1
14 CT-100×204×12×12 100 204 12 12 13 35.77 28.1 256 2.67 32.4
851 4.88 83.4
15 CT-124×124×5×8 124 124 5 8 12 16.34 12.8 248 3.63 25.6
147 2.79 23.5
16 CT-125×125×6×9 125 125 6 9 8 18.48 14.5 248 3.66 25.6
147 2.82 23.5
17 CT-122×175×7×11 122 175 7 11 13 27.75 21.8 288 3.22 29.1
492 4.21 56.5
18 CT-125×250×9×14 125 250 9 14 13 45.72 35.9 412 2.99 39.5
1820 6.29 146
19 CT-122×252×11×11 122 252 11 11 16 41.03 32.2 445 3.29 45.3
1470 5.98 117
20 CT-125×255×14×14 125 255 14 14 16 52.34 41.1 589 3.36 59.4
1940 6.09 152
21 CT-149×149×5.5×8 149 149 5.5 8 13 20.4 16 393 4.39 33.8
221 3.29 29.7
22 CT-150×150×6.5×9 150 150 6.5 9 13 23.39 18.4 464 4.45 40
254 3.29 33.8
23 CT-147×200×8×12 147 200 8 12 13 35.53 27.9 571 4.01 48.2
801 4.75 80.1
24 CT-150×300×10×15 150 300 10 15 18 59.89 47 798 3.65 63.7
3380 7.51 225
25 CT-147×302×12×12 147 302 12 12 18 53.83 42.3 858 3.99 72.3
2760 7.16 183
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No. Designation H
[mm]
B
[mm]
t1
[mm]
t2
[mm]
r1
[mm]
A
[cm²]
w
[kg/m]
Ix
[cm⁴]
ix
[cm]
Zx
[cm³]
Iy
[cm⁴]
iy
[cm]
Zy
[cm³]
26 CT-150×305×15×15 150 305 15 15 18 67.39 52.9 1110 4.05 92.5
3550 7.26 233
27 CT-173×174×6×9 173 174 6 9 14 26.34 20.7 679 5.08 50
396 3.87 45.5
28 CT-175×175×7×11 175 175 7 11 13 31.46 24.7 814 5.09 59.3
492 3.96 56.2
29 CT-170×250×9×14 170 250 9 14 13 49.77 39.1 1020 4.52 73.2
1820 6.05 146
30 CT-172×348×10×16 172 348 10 16 20 73 57.3 1230 4.11 84.7
5620 8.78 323
31 CT-175×350×12×19 175 350 12 19 20 86.94 68.2 1520 4.18 104
6790 8.84 388
32 CT-169×351×13×13 169 351 13 13 20 67.63 53.1 1420 4.59 104
4690 8.33 267
33 CT-172×354×16×16 172 354 16 16 20 83.32 65.4 1800 4.65 131
5920 8.43 335
34 CT-175×357×19×19 175 357 19 19 20 99.19 77.9 2200 4.71 158
7220 8.53 404
35 CT-198×199×7×11 198 199 7 11 16 36.08 28.3 1190 5.76 76.4
724 4.48 72.7
36 CT-200×200×8×13 200 200 8 13 16 42.06 33 1400 5.76 88.6
868 4.54 86.8
37 CT-195×300×10×16 195 300 10 16 13 66.63 52.3 1730 5.09 108
3600 7.35 240
38 CT-197×398×11×18 197 398 11 18 22 93.41 73.3 2050 4.68 123
9460 10.1 475
39 CT-200×400×13×21 200 400 13 21 22 109.3 85.8 2480 4.76 147
11200 10.1 560
40 CT-207×405×18×28 207 405 18 28 22 147.7 116 3620 4.95 213
15500 10.2 766
41 CT-214×407×20×35 214 407 20 35 22 180.3 142 4380 4.93 250
19700 10.4 967
42 CT-229×417×30×50 229 417 30 50 22 264.3 207 7470 5.32 414
30300 10.7 1450
43 CT-249×432×45×70 249 432 45 70 22 385 302 13200 5.87 706
47100 11.1 2180
44 CT-194×402×15×15 194 402 15 15 22 89.23 70 2480 5.27 158
8130 9.54 404
45 CT-197×405×18×18 197 405 18 18 22 107.2 84.1 3050 5.34 193
9980 9.65 493
46 CT-200×408×21×21 200 408 21 21 22 125.3 98.4 3650 5.4 229
11900 9.75 584
47 CT-223×199×8×12 223 199 8 12 18 42.15 33.1 1880 6.67 109
790 4.33 7964
48 CT-225×200×9×14 225 200 9 14 18 48.38 38 2160 6.68 124
936 4.4 93.6
49 CT-220×300×11×18 220 300 11 18 13 76.95 60.4 2680 5.9 150
4050 7.26 270
50 CT-248×199×9×14 248 199 9 14 20 50.64 39.7 2840 7.49 150
922 4.27 92.7
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No. Designation H
[mm]
B
[mm]
t1
[mm]
t2
[mm]
r1
[mm]
A
[cm²]
w
[kg/m]
Ix
[cm⁴]
ix
[cm]
Zx
[cm³]
Iy
[cm⁴]
iy
[cm]
Zy
[cm³]
51 CT-250×200×10×16 250 200 10 16 20 57.12 44.8 3210 7.5 169
1070 4.33 107
52 CT-253×201×11×19 253 201 11 19 20 65.65 51.5 3670 7.48 190
1290 4.43 128
53 CT-241×300×11×15 241 300 11 15 26 72.76 57.1 3420 6.85 178
3380 6.82 225
54 CT-244×300×11×18 244 300 11 18 13 79.59 62.5 3610 6.74 184
4050 7.14 270
55 CT-298×199×10×15 298 199 10 15 22 60.23 47.3 5190 9.29 236
990 4.05 99.5
56 CT-300×200×11×17 300 200 11 17 22 67.21 52.8 5810 9.3 262
1140 4.12 114
57 CT-303×201×12×20 303 201 12 20 22 76.24 59.8 6570 9.28 292
1360 4.22 135
58 CT-291×300×12×17 291 300 12 17 28 87.24 68.5 6360 8.54 280
3830 6.63 256
59 CT-294×300×12×20 294 300 12 20 13 93.61 73.5 6680 8.45 288
4500 6.94 300
60 CT-297×302×14×23 297 302 14 23 28 111.2 87.8 7920 8.44 339
5290 6.9 350
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How to Use
Switching section tables
Use the buttons in "Select steel section type" to switch between 13 types of JIS steel sections.
Cross-section drawing
Click a designation (e.g. H-200×100×5.5×8) to display its cross-section drawing.
Row selection (marker)
Click a row to highlight it for comparison. Click again to deselect.
Filter by required Zx / Zy
Open "Required Section Modulus Calculator" and enter the required Zx or Zy [cm³]. Sections that satisfy the requirement are highlighted in yellow.
Calculate required Zx from bending moment
Enter the design bending moment Mx [kN·m], steel grade (SN400/SS400 or SN490) and load duration; the required Zx is calculated automatically. * Lateral-torsional buckling is not considered.
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