350x150 RHS — Sizes, Dimensions & Properties

7 sizes in the 350x150 serial size group. All dimensions in mm, section properties in cm units.

DesignationMass (kg/m)D (mm)B (mm)t (mm)A (cm2)Ixx (cm4)Iyy (cm4)
350x150x5.038.3350150548.77,6602,050
350x150x6.347.93501506.3619,4802,530
350x150x8.060.3350150876.811,8003,110
350x150x10.074.53501501094.914,3003,740
350x150x12.591.935015012.511717,3004,450
350x150x14.210335015014.213219,2004,890
350x150x16.01153501501614721,1005,320

350x150x5.0 RHS

Designation
350x150x5.0
Outside Depth (D)
350 mm
Outside Width (B)
150 mm
Wall Thickness (t)
5 mm
Mass per Metre
38.3 kg/m
Cross-Sectional Area
48.7 cm2
Second Moment of Area Ixx
7,660 cm4
Second Moment of Area Iyy
2,050 cm4
Elastic Modulus Zxx
437 cm3
Elastic Modulus Zyy
274 cm3
Plastic Modulus Sxx
543 cm3
Plastic Modulus Syy
301 cm3
Radius of Gyration rxx
12.5 cm
Radius of Gyration ryy
6.49 cm
Torsional Constant (It)
5,160 cm4
Surface Area per Metre
0.987 m2/m
Surface Area per Tonne
25.8 m2/t

350x150x6.3 RHS

Designation
350x150x6.3
Outside Depth (D)
350 mm
Outside Width (B)
150 mm
Wall Thickness (t)
6.3 mm
Mass per Metre
47.9 kg/m
Cross-Sectional Area
61 cm2
Second Moment of Area Ixx
9,480 cm4
Second Moment of Area Iyy
2,530 cm4
Elastic Modulus Zxx
542 cm3
Elastic Modulus Zyy
337 cm3
Plastic Modulus Sxx
676 cm3
Plastic Modulus Syy
373 cm3
Radius of Gyration rxx
12.5 cm
Radius of Gyration ryy
6.43 cm
Torsional Constant (It)
6,390 cm4
Surface Area per Metre
0.984 m2/m
Surface Area per Tonne
20.5 m2/t

350x150x8.0 RHS

Designation
350x150x8.0
Outside Depth (D)
350 mm
Outside Width (B)
150 mm
Wall Thickness (t)
8 mm
Mass per Metre
60.3 kg/m
Cross-Sectional Area
76.8 cm2
Second Moment of Area Ixx
11,800 cm4
Second Moment of Area Iyy
3,110 cm4
Elastic Modulus Zxx
673 cm3
Elastic Modulus Zyy
414 cm3
Plastic Modulus Sxx
844 cm3
Plastic Modulus Syy
464 cm3
Radius of Gyration rxx
12.4 cm
Radius of Gyration ryy
6.36 cm
Torsional Constant (It)
7,930 cm4
Surface Area per Metre
0.979 m2/m
Surface Area per Tonne
16.2 m2/t

350x150x10.0 RHS

Designation
350x150x10.0
Outside Depth (D)
350 mm
Outside Width (B)
150 mm
Wall Thickness (t)
10 mm
Mass per Metre
74.5 kg/m
Cross-Sectional Area
94.9 cm2
Second Moment of Area Ixx
14,300 cm4
Second Moment of Area Iyy
3,740 cm4
Elastic Modulus Zxx
818 cm3
Elastic Modulus Zyy
498 cm3
Plastic Modulus Sxx
1,040 cm3
Plastic Modulus Syy
566 cm3
Radius of Gyration rxx
12.3 cm
Radius of Gyration ryy
6.27 cm
Torsional Constant (It)
9,630 cm4
Surface Area per Metre
0.974 m2/m
Surface Area per Tonne
13.1 m2/t

350x150x12.5 RHS

Designation
350x150x12.5
Outside Depth (D)
350 mm
Outside Width (B)
150 mm
Wall Thickness (t)
12.5 mm
Mass per Metre
91.9 kg/m
Cross-Sectional Area
117 cm2
Second Moment of Area Ixx
17,300 cm4
Second Moment of Area Iyy
4,450 cm4
Elastic Modulus Zxx
988 cm3
Elastic Modulus Zyy
593 cm3
Plastic Modulus Sxx
1,260 cm3
Plastic Modulus Syy
686 cm3
Radius of Gyration rxx
12.2 cm
Radius of Gyration ryy
6.17 cm
Torsional Constant (It)
11,600 cm4
Surface Area per Metre
0.968 m2/m
Surface Area per Tonne
10.5 m2/t

350x150x14.2 RHS

Designation
350x150x14.2
Outside Depth (D)
350 mm
Outside Width (B)
150 mm
Wall Thickness (t)
14.2 mm
Mass per Metre
103 kg/m
Cross-Sectional Area
132 cm2
Second Moment of Area Ixx
19,200 cm4
Second Moment of Area Iyy
4,890 cm4
Elastic Modulus Zxx
1,100 cm3
Elastic Modulus Zyy
652 cm3
Plastic Modulus Sxx
1,410 cm3
Plastic Modulus Syy
763 cm3
Radius of Gyration rxx
12.1 cm
Radius of Gyration ryy
6.09 cm
Torsional Constant (It)
12,900 cm4
Surface Area per Metre
0.963 m2/m
Surface Area per Tonne
9.4 m2/t

350x150x16.0 RHS

Designation
350x150x16.0
Outside Depth (D)
350 mm
Outside Width (B)
150 mm
Wall Thickness (t)
16 mm
Mass per Metre
115 kg/m
Cross-Sectional Area
147 cm2
Second Moment of Area Ixx
21,100 cm4
Second Moment of Area Iyy
5,320 cm4
Elastic Modulus Zxx
1,210 cm3
Elastic Modulus Zyy
709 cm3
Plastic Modulus Sxx
1,560 cm3
Plastic Modulus Syy
840 cm3
Radius of Gyration rxx
12 cm
Radius of Gyration ryy
6.01 cm
Torsional Constant (It)
14,100 cm4
Surface Area per Metre
0.959 m2/m
Surface Area per Tonne
8.3 m2/t

350x150 RHS — Overview

The 350x150 serial size group contains 7 sections, ranging from 115 kg/m to 38.3 kg/m. All sections in this group share the same nominal depth and width but differ in web and flange thickness, which affects the weight and structural capacity.

Section properties are sourced from the Tata Steel Blue Book / SCI P363. For structural design to BS EN 1993-1-1 (Eurocode 3), use these properties with the appropriate partial factors from the UK National Annex.

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Section properties from Tata Steel Blue Book / SCI P363 / BS 4-1:2005.

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