STR-LAB
Structural Design Tools Hyper Steel Section Tables
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Select steel section type (JIS)
H-Section Lightweight H T-Section (CT) Angle (L) Channel Lipped Channel I-Beam
Pipe (CHS) ST Column Pipe Square/Rect. Tube Flat Bar Round Bar Deformed Bar
Required Section Modulus Calculator (optional)
Round Bar 43 items
* Commonly available sizes may be limited depending on the manufacturer.
No. Designation Φ
[mm]		 A
[cm²]		 w
[kg/m]
1 Φ6 6 0.2827 0.222
2 Φ7 7 0.3848 0.302
3 Φ8 8 0.5027 0.395
4 Φ9 9 0.6362 0.499
5 Φ10 10 0.7854 0.617
6 Φ11 11 0.9503 0.746
7 Φ12 12 1.131 0.888
8 Φ13 13 1.327 1.04
9 Φ16 16 2.011 1.58
10 Φ19 19 2.835 2.23
11 Φ20 20 3.142 2.47
12 Φ22 22 3.801 2.98
13 Φ24 24 4.523 3.55
14 Φ25 25 4.909 3.85
15 Φ28 28 6.158 4.83
16 Φ30 30 7.068 5.55
17 Φ32 32 8.042 6.31
18 Φ36 36 10.18 7.99
19 Φ38 38 11.34 8.9
20 Φ42 42 13.85 10.9
21 Φ46 46 16.62 13
22 Φ48 48 18.1 14.2
23 Φ50 50 19.64 15.4
24 Φ55 55 23.76 18.7
25 Φ56 56 24.63 19.3
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No. Designation Φ
[mm]		 A
[cm²]		 w
[kg/m]
26 Φ60 60 28.27 22.2
27 Φ64 64 32.17 25.3
28 Φ65 65 33.18 26
29 Φ70 70 38.48 30.2
30 Φ75 75 44.18 34.7
31 Φ80 80 50.27 39.5
32 Φ85 85 56.75 44.5
33 Φ90 90 63.62 49.9
34 Φ95 95 70.88 55.6
35 Φ100 100 78.54 61.7
36 Φ110 110 95.03 74.6
37 Φ120 120 113.1 88.8
38 Φ130 130 132.7 104
39 Φ140 140 153.9 121
40 Φ150 150 176.7 139
41 Φ160 160 201.1 158
42 Φ180 180 254.5 200
43 Φ200 200 314.2 247
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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.
Text size
Use the S / M / L buttons at the top right to change the table text size (saved in your browser).