HOLLOW STEEL SECTIONS

A hollow structural section (HSS) is a type of metal profile with a hollow cross section. The term is used predominantly in the United States, or other countries which follow US construction or engineering terminology.HSS members can be circular, square, or rectangular sections, although other shapes such as elliptical are also available. HSS is only composed of structural steel per code.

For Structural Use (RHS), Dimension & Properties of Rectangular Hollow Section IS 4923 : 2017 Grade Yst 210, Yst 240, Yst 310, Yst 355

RHS DXD
DEPTH D
WIDTH D
THICKNESS
WEIGHT
AREA OF SECTION
MOMENT OF INERTIA ABOUT
RADUIS OF GYRATION ABOUT
ELASTIC MODULE
SPLASTIC MODULES
XX
XY
XX
XY
XX
XY
XX
XY
MM
MM
MM
MM
KG/M
CM
CM
CM
CM
CM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
50.0*25.0
50
25
2.9
2.98
3.8
10.93
3.6
1.7
0.97
4.37
2.88
5.72
3.48
50
25
3.2
3.24
4.13
11.63
3.8
1.68
0.95
4.65
3.04
6.14
3.73
60.0*40.0
60
40
2.9
4.12
5.25
24.74
13.11
2.17
1.58
8.25
6.56
10.25
7.73
66.0*33.0
66
33
2.9
4.07
5.19
27.33
9.12
2.29
1.33
8.28
5.53
10.59
6.49
66
33
3.6
4.93
6.28
31.87
10.52
2.25
9.66
6.37
12.56
7.66
66
33
4.5
5.95
7.58
36.64
11.93
2.2
1.25
11.1
7.23
14.77
8.94
75.0*25.0
75
25
2.9
4.12
5.25
29.82
7.72
2.38
1.21
8.52
5.14
11.07
6.04
75
25
3.2
4.5
5.73
32.04
8.24
2.37
1.2
9.15
5.49
11.98
6.51
75
25
4
5.45
6.95
37.23
9.42
2.31
1.16
10.64
6.28
14.2
7.66
80.0*40.0
80
40
2.9
5.03
6.41
50.87
17.11
2.82
1.63
12.72
8.56
16.07
9.88
80
40
3.2
5.5
7.01
54.94
18.41
2.8
1.62
13.74
9.21
17.46
10.72
80
40
4
6.71
8.55
64.79
21.49
2.75
1.59
16.2
10.74
20.91
12.77
96.0*48.0
96
48
3.2
6.71
8.54
98.61
33.28
3.4
1.97
20.54
13.87
25.85
15.91
96
48
4
8.22
10.47
117.54
39.32
3.35
1.94
24.49
16.3
31.21
19.14
96
48
4.8
9.66
12.31
134.35
44.55
3.3
1.9
27.99
18.56
36.13
22.08
100.0*50.0
100
50
3.2
7.01
8.93
112.29
37.95
3.6
2.06
22.46
15.18
28.2
17.37
100
50
4
8.59
10.95
134.14
44.95
3.5
2.03
26.83
17.98
34.1
20.93
122.0*61.0
122
61
3.6
9.67
12.32
232.61
78.83
4.34
2.35
38.13
25.84
47.71
29.42
122
61
4.5
11.88
15.14
278.94
93.78
4.29
2.49
45.73
30.75
57.85
35.56
122
61
5.4
14.01
17.85
320.83
107.03
4.24
2.45
52.6
35.09
67.29
41.22

Note :- Size other than specified above may be supplied as per customer requirement.

A. PHYSICAL PROPERTIES Grade Y.S. Mpa (Min) T.S. Mpa (Min) % ELONGRATION
25.4 MM & UNDER OVER 25.4 MM
YST-210
210
330
12
20
YST-240
240
410
10
15
YST-310
310
450
8
10

 

TOLERANCES
A. THICKNESS
B. WEIGHT
C. LENGTH
  • Welded tubes ± 7.5%
  • Outside dimensions of sides ± 1% of Length of side to be measured with a minimum of ±0.5mm
  • On individual : + 10%,-8% Length
  • On lots of 10 tonne minimum : ± 7%
  • Squareness of come : 90%,± 2%
  • Exact Length +/-6mm
  • Random Length this may be obtained by arrangement between purchases & manufacturer