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Round Structural Tube Table Chart Per. ASTM 1085

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Round Structural Tube Per. ASTM 1085, HSS Hollow Structural Section Round Structural Tube table chart. This specification covers cold-formed welded carbon steel hollow structural sections (HSS) for welded or bolted construction. These shapes are utilized in but not limited to the following applications: buildings, bridges, towers, cranes, sign supports and poles, off-shore production and drilling platforms, roll-over protective structures (ROPS), falling object protective structures (FOPS), and amusement rides.

Where:

D = Outside Diameter
t = Wall thickness
I = Area moment of inertia
S = Elastic section modulus
Z = Plastic section modulus
J = Torsional stiffness of cross section
C = Tortional shear constant or cross section
A = Section area
r = Radius

Notes:

  • Cold formed and welded
  • Yield Stress Round 50 ksi min - 70 ksi max
  • Tensile stress 65 ksi min
  • Wall thickness -5%
  • Mass tolerance -3.5%
  • CVN 25 ft-lbs at 40 degrees F
  • Heat treating optional

Round Hollow structural sections (HSS) Table Chart per ASTM 1085

Shape
D x t
Wall
Thickness, t
in.
Nominal Wt
lb/ft
Area, A
in2
D/t
I
S
r
Z
Torsion
J
C
in4
in3
in.
in3
in4
in3
20 x 0.500
0.500
104.23
30.6
40.0
1460
146
6.90
190
2910
291
x 0.375
0.375
78.67
23.1
53.3
1110
111
6.94
144
2230
223
18 x 0.500
0.500
93.54
27.5
36.0
1050
117
6.19
153
2110
234
x 0.375
0.375
70.66
20.8
48.0
807
89.6
6.23
117
1610
179
16 x 0.625
0.625
102.73
30.2
25.6
894
112
5.44
148
1790
223
x 0.500
0.500
82.85
24.3
32.0
732
91.5
5.48
120
1460
183
x 0.438
0.438
72.87
21.4
36.5
649
81.1
5.50
106
1300
162
x 0.375
0.375
62.64
18.4
42.7
562
70.3
5.53
91.6
1120
140
x 0.312
0.312
52.32
15.4
51.3
473
59.2
5.55
76.8
946
118
x 0.250
0.250
42.09
12.4
64.0
384
48.0
5.57
62.0
767
95.9
14 x 0.625
0.625
89.36
26.3
22.4
589
84.1
4.73
112
1180
168
x 0.500
0.500
72.16
21.2
28.0
484
69.1
4.78
91.2
968
138
x 0.375
0.375
54.62
16.1
37.3
373
53.3
4.82
69.6
746
106
x 0.312
0.312
45.65
13.4
44.9
314
44.9
4.84
58.5
629
89.7
x 0.250
0.250
36.75
10.8
56.0
255
36.5
4.86
47.3
511
72.9
12.75 x 0.500
0.500
65.48
19.2
25.5
362
56.7
4.33
75.1
723
113
x 0.375
0.375
49.61
14.6
34.0
279
43.8
4.38
57.4
559
87.5
x 0.250
0.250
33.41
9.82
51.0
192
30.1
4.42
39.1
384
60.1
10.75 x 0.500
0.500
54.79
16.1
21.5
212
39.4
3.63
52.6
424
78.5
x 0.375
0.375
41.59
12.2
28.7
165
30.6
3.67
40.4
329
61.1
x 0.250
0.250
28.06
8.25
43.0
114
21.2
3.71
27.6
227
42.3
10 x 0.625
0.625
62.64
18.4
16.0
203
40.6
3.32
55.0
406
80.6
x 0.500
0.500
50.78
14.9
20.0
169
33.8
3.36
45.2
338
67.2
x 0.375
0.375
38.58
11.3
26.7
132
26.3
3.41
34.8
263
52.5
x 0.312
0.312
32.31
9.50
32.1
112
22.3
3.43
29.3
223
44.5
x 0.250
0.250
26.06
7.66
40.0
91.1
18.2
3.45
23.8
182
36.4
x 0.188
0.188
19.72
5.80
53.2
69.8
14.0
3.47
18.1
140
27.9
Shape
D x t
Wall
Thickness, t
in.
Nominal Wt
lb/ft
Area, A
in2
D/t
I
S
r
Z
Torsion
J
C
in4
in3
in.
in3
in4
in3
9.625 x 0.500
0.500
48.77
14.3
19.2
150
31.1
3.23
41.7
299
61.9
x 0.375
0.375
37.08
10.9
25.7
117
24.3
3.27
32.1
233
48.4
x 0.312
0.312
31.06
9.13
30.8
99.1
20.6
3.29
27.1
198
41.1
x 0.250
0.250
25.06
7.36
38.5
81.0
16.8
3.32
22.0
162
33.6
x 0.188
0.188
18.97
5.57
51.2
62.1
12.9
3.34
16.7
124
25.8
8.625 x 0.625
0.625
53.45
15.7
13.8
126
29.3
2.84
40.1
253
58.0
x 0.500
0.500
43.43
12.8
17.2
106
24.5
2.88
33.0
211
48.7
x 0.375
0.375
33.07
9.72
23.0
82.9
19.2
2.92
25.5
166
38.3
x 0.322
0.322
28.58
8.40
26.8
72.5
16.8
2.94
22.2
145
33.5
x 0.250
0.250
22.38
6.58
34.5
57.7
13.4
2.96
17.5
115
26.7
x 0.188
0.188
16.96
4.98
45.9
44.4
10.3
2.98
13.4
88.7
20.6
7.625 x 0.375
0.375
29.06
8.54
20.3
56.3
14.8
2.57
19.7
113
29.4
0.328
0.328
25.59
7.52
23.2
50.1
13.2
2.58
17.5
100
26.2
7.5 x 0.500
0.500
37.42
11.0
15.0
67.7
18.1
2.48
24.5
135
35.8
x 0.375
0.375
28.56
8.39
20.0
53.4
14.2
2.52
19.1
107
28.4
x 0.312
0.312
23.97
7.05
24.0
45.6
12.2
2.54
16.1
91.2
24.2
x 0.250
0.250
19.38
5.69
30.0
37.5
9.99
2.56
13.1
74.9
19.9
x 0.188
0.188
14.70
4.32
39.9
28.9
7.70
2.59
10.1
57.8
15.4
7 x 0.500
0.500
34.74
10.2
14.0
54.2
15.5
2.30
21.2
108
30.7
x 0.375
0.375
26.56
7.80
18.7
43.0
12.3
2.35
16.5
85.9
24.4
x 0.312
0.312
22.31
6.56
22.4
36.7
10.5
2.37
14.0
73.5
20.9
x 0.250
0.250
18.04
5.30
28.0
30.2
8.64
2.39
11.4
60.5
17.2
x 0.188
0.188
13.69
4.02
37.2
23.4
6.67
2.41
8.73
46.7
13.3
6.875 x 0.500
0.500
34.07
10.0
13.8
51.2
14.9
2.26
20.4
102
29.5
x 0.375
0.375
26.06
7.66
18.3
40.6
11.8
2.30
15.9
81.2
23.5
x 0.312
0.312
21.89
6.43
22.0
34.7
10.1
2.32
13.4
69.4
20.1
x 0.250
0.250
17.71
5.20
27.5
28.6
8.32
2.34
11.0
57.2
16.6
x 0.188
0.188
13.44
3.95
36.6
22.1
6.43
2.37
8.41
44.2
12.8
Shape
D x t
Wall
Thickness, t
in.
Nominal Wt
lb/ft
Area, A
in2
D/t
I
S
r
Z
Torsion
J
C
in4
in3
in.
in3
in4
in3
6.625 x 0.500
0.500
32.74
9.62
13.2
45.4
13.7
2.17
18.8
90.8
27.1
x 0.432
0.432
28.60
8.40
15.3
40.5
12.2
2.19
16.6
81.0
24.2
x 0.375
0.375
25.06
7.36
17.7
36.1
10.9
2.21
14.7
72.2
21.6
x 0.312
0.312
21.06
6.19
21.2
30.9
9.33
2.23
12.4
61.8
18.6
x 0.280
0.280
18.99
5.58
23.7
28.1
8.50
2.25
11.3
56.3
16.9
x 0.250
0.250
17.04
5.01
26.5
25.5
7.69
2.26
10.2
50.9
15.3
x 0.188
0.188
12.94
3.80
35.2
19.7
5.95
2.28
7.79
39.4
11.9
6 x 0.500
0.500
29.40
8.64
12.0
32.9
11.0
1.95
15.2
65.9
21.6
x 0.375
0.375
22.55
6.63
16.0
26.3
8.78
1.99
11.9
52.7
17.4
x 0.312
0.312
18.97
5.58
19.2
22.6
7.54
2.01
10.1
45.2
15.0
x 0.280
0.280
17.12
5.03
21.4
20.6
6.88
2.02
9.17
41.3
13.7
x 0.250
0.250
15.37
4.52
24.0
18.7
6.23
2.03
8.27
37.4
12.4
x 0.188
0.188
11.68
3.43
31.9
14.5
4.84
2.06
6.35
29.0
9.66
5.563 x 0.500
0.500
27.06
7.95
11.1
25.7
9.25
1.80
12.9
51.5
18.2
x 0.375
0.375
20.80
6.11
14.8
20.7
7.43
1.84
10.1
41.3
14.7
x 0.258
0.258
14.63
4.30
21.6
15.2
5.45
1.88
7.27
30.3
10.9
x 0.188
0.188
10.80
3.17
29.6
11.5
4.13
1.90
5.43
23.0
8.24
5.5 x 0.500
0.500
26.73
7.85
11.0
24.8
9.01
1.78
12.5
49.6
17.7
x 0.375
0.375
20.55
6.04
14.7
19.9
7.25
1.82
9.87
39.9
14.4
x 0.258
0.258
14.46
4.25
21.3
14.6
5.32
1.86
7.10
29.3
10.6
5 x 0.500
0.500
24.05
7.07
10.0
18.1
7.25
1.60
10.2
36.2
14.2
x 0.375
0.375
18.54
5.45
13.3
14.7
5.87
1.64
8.04
29.3
11.6
x 0.312
0.312
15.64
4.6
16.0
12.7
5.07
1.66
6.87
25.4
10.1
x 0.258
0.258
13.08
3.84
19.4
10.8
4.33
1.68
5.81
21.7
8.62
x 0.250
0.250
12.69
3.73
20.0
10.6
4.22
1.68
5.65
21.1
8.40
x 0.188
0.188
9.67
2.84
26.6
8.24
3.30
1.70
4.36
16.5
6.57
Shape
D x t
Wall
Thickness, t
in.
Nominal Wt
lb/ft
Area, A
in2
D/t
I
S
r
Z
Torsion
J
C
in.4
in.3
in.
in.3
in.4
in.3
4.5 x 0.375
0.375
16.54
4.86
12.0
10.4
4.63
1.46
6.40
20.8
9.13
x 0.337
0.337
15.00
4.41
13.4
9.61
4.27
1.48
5.85
19.2
8.45
x 0.237
0.237
10.80
3.17
19.0
7.23
3.21
1.51
4.31
14.5
6.39
x 0.188
0.188
8.67
2.55
23.9
5.93
2.64
1.53
3.50
11.9
5.25
4 x 0.313
0.313
12.34
3.63
12.8
6.21
3.10
1.31
4.27
12.4
6.13
x 0.250
0.250
10.02
2.95
16.0
5.20
2.60
1.33
3.52
10.4
5.16
x 0.237
0.237
9.53
2.8
16.9
4.98
2.49
1.33
3.36
10.0
4.94
x 0.226
0.226
9.12
2.68
17.7
4.79
2.39
1.34
3.22
9.58
4.76
x 0.220
0.220
8.89
2.61
18.2
4.68
2.34
1.34
3.15
9.36
4.65
x 0.188
0.188
7.66
2.25
21.3
4.10
2.05
1.35
2.73
8.20
4.08
3.5 x 0.313
0.313
10.66
3.13
11.2
4.02
2.30
1.13
3.19
8.03
4.52
x 0.300
0.300
10.26
3.02
11.7
3.89
2.23
1.14
3.08
7.79
4.38
x 0.250
0.250
8.69
2.55
14.0
3.39
1.94
1.15
2.65
6.78
3.83
x 0.216
0.216
7.58
2.23
16.2
3.02
1.72
1.16
2.33
6.03
3.42
x 0.203
0.203
7.15
2.10
17.2
2.87
1.64
1.17
2.21
5.74
3.26
x 0.188
0.188
6.66
1.96
18.6
2.69
1.54
1.17
2.06
5.38
3.06
3 x 0.250
0.250
7.35
2.16
12.0
2.06
1.37
0.976
1.90
4.12
2.71
x 0.216
0.216
6.43
1.89
13.9
1.84
1.23
0.987
1.68
3.68
2.43
x 0.203
0.203
6.07
1.78
14.8
1.75
1.17
0.991
1.59
3.51
2.32
x 0.188
0.188
5.65
1.66
16.0
1.65
1.10
1.00
1.49
3.30
2.18
x 0.152
0.152
4.63
1.36
19.7
1.38
0.922
1.01
1.23
2.77
1.83
2.875 x 0.250
0.250
7.02
2.06
11.5
1.79
1.25
0.932
1.73
3.58
2.45
x 0.203
0.203
5.80
1.70
14.2
1.53
1.06
0.947
1.45
3.06
2.11
x 0.188
0.188
5.40
1.59
15.3
1.44
1.00
0.952
1.36
2.88
1.99
2.5 x 0.250
0.250
6.01
1.77
10.0
1.13
0.906
0.800
1.27
2.26
1.77
x 0.188
0.188
4.65
1.37
13.3
0.918
0.735
0.820
1.01
1.84
1.45
2.375 x 0.250
0.250
5.68
1.67
9.50
0.955
0.804
0.756
1.13
1.91
1.57
x 0.218
0.218
5.03
1.48
10.9
0.868
0.731
0.766
1.02
1.74
1.44
x 0.188
0.188
4.40
1.29
12.6
0.778
0.655
0.776
0.901
1.56
1.29
x 0.154
0.154
3.66
1.07
15.4
0.666
0.561
0.787
0.761
1.33
1.11
1.9 x 0.188
0.188
3.44
1.01
10.1
0.375
0.395
0.609
0.553
0.750
0.773

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