120x120 SHS — Sizes, Dimensions & Properties
8 sizes in the 120x120 serial size group. All dimensions in mm, section properties in cm units.
| Designation | Mass (kg/m) | D (mm) | t (mm) | A (cm2) | I (cm4) | Z (cm3) | S (cm3) | r (cm) |
|---|---|---|---|---|---|---|---|---|
| 120x120x4.0 | 14.4 | 120 | 4 | 18.4 | 410 | 68.4 | 79.7 | 4.72 |
| 120x120x5.0 | 17.8 | 120 | 5 | 22.7 | 498 | 83 | 97.6 | 4.68 |
| 120x120x6.0 | 21.2 | 120 | 6 | 27 | 579 | 96.6 | 115 | 4.63 |
| 120x120x6.3 | 22.2 | 120 | 6.3 | 28.2 | 603 | 100 | 120 | 4.62 |
| 120x120x8.0 | 27.6 | 120 | 8 | 35.2 | 726 | 121 | 146 | 4.55 |
| 120x120x10.0 | 33.7 | 120 | 10 | 42.9 | 852 | 142 | 175 | 4.46 |
| 120x120x12.0 | 39.5 | 120 | 12 | 50.3 | 958 | 160 | 201 | 4.36 |
| 120x120x12.5 | 40.9 | 120 | 12.5 | 52.1 | 982 | 164 | 207 | 4.34 |
120x120x4.0 SHS
- Designation
- 120x120x4.0
- Outside Dimension (D)
- 120 mm
- Wall Thickness (t)
- 4 mm
- Mass per Metre
- 14.4 kg/m
- Cross-Sectional Area
- 18.4 cm2
- Second Moment of Area I
- 410 cm4
- Elastic Modulus Z
- 68.4 cm3
- Plastic Modulus S
- 79.7 cm3
- Radius of Gyration r
- 4.72 cm
- Torsional Constant (It)
- 635 cm4
- Surface Area per Metre
- 0.47 m2/m
- Surface Area per Tonne
- 32.6 m2/t
120x120x5.0 SHS
- Designation
- 120x120x5.0
- Outside Dimension (D)
- 120 mm
- Wall Thickness (t)
- 5 mm
- Mass per Metre
- 17.8 kg/m
- Cross-Sectional Area
- 22.7 cm2
- Second Moment of Area I
- 498 cm4
- Elastic Modulus Z
- 83 cm3
- Plastic Modulus S
- 97.6 cm3
- Radius of Gyration r
- 4.68 cm
- Torsional Constant (It)
- 777 cm4
- Surface Area per Metre
- 0.467 m2/m
- Surface Area per Tonne
- 26.2 m2/t
120x120x6.0 SHS
- Designation
- 120x120x6.0
- Outside Dimension (D)
- 120 mm
- Wall Thickness (t)
- 6 mm
- Mass per Metre
- 21.2 kg/m
- Cross-Sectional Area
- 27 cm2
- Second Moment of Area I
- 579 cm4
- Elastic Modulus Z
- 96.6 cm3
- Plastic Modulus S
- 115 cm3
- Radius of Gyration r
- 4.63 cm
- Torsional Constant (It)
- 911 cm4
- Surface Area per Metre
- 0.465 m2/m
- Surface Area per Tonne
- 21.9 m2/t
120x120x6.3 SHS
- Designation
- 120x120x6.3
- Outside Dimension (D)
- 120 mm
- Wall Thickness (t)
- 6.3 mm
- Mass per Metre
- 22.2 kg/m
- Cross-Sectional Area
- 28.2 cm2
- Second Moment of Area I
- 603 cm4
- Elastic Modulus Z
- 100 cm3
- Plastic Modulus S
- 120 cm3
- Radius of Gyration r
- 4.62 cm
- Torsional Constant (It)
- 950 cm4
- Surface Area per Metre
- 0.464 m2/m
- Surface Area per Tonne
- 20.9 m2/t
120x120x8.0 SHS
- Designation
- 120x120x8.0
- Outside Dimension (D)
- 120 mm
- Wall Thickness (t)
- 8 mm
- Mass per Metre
- 27.6 kg/m
- Cross-Sectional Area
- 35.2 cm2
- Second Moment of Area I
- 726 cm4
- Elastic Modulus Z
- 121 cm3
- Plastic Modulus S
- 146 cm3
- Radius of Gyration r
- 4.55 cm
- Torsional Constant (It)
- 1,160 cm4
- Surface Area per Metre
- 0.459 m2/m
- Surface Area per Tonne
- 16.6 m2/t
120x120x10.0 SHS
- Designation
- 120x120x10.0
- Outside Dimension (D)
- 120 mm
- Wall Thickness (t)
- 10 mm
- Mass per Metre
- 33.7 kg/m
- Cross-Sectional Area
- 42.9 cm2
- Second Moment of Area I
- 852 cm4
- Elastic Modulus Z
- 142 cm3
- Plastic Modulus S
- 175 cm3
- Radius of Gyration r
- 4.46 cm
- Torsional Constant (It)
- 1,382 cm4
- Surface Area per Metre
- 0.454 m2/m
- Surface Area per Tonne
- 13.5 m2/t
120x120x12.0 SHS
- Designation
- 120x120x12.0
- Outside Dimension (D)
- 120 mm
- Wall Thickness (t)
- 12 mm
- Mass per Metre
- 39.5 kg/m
- Cross-Sectional Area
- 50.3 cm2
- Second Moment of Area I
- 958 cm4
- Elastic Modulus Z
- 160 cm3
- Plastic Modulus S
- 201 cm3
- Radius of Gyration r
- 4.36 cm
- Torsional Constant (It)
- 1,578 cm4
- Surface Area per Metre
- 0.449 m2/m
- Surface Area per Tonne
- 11.4 m2/t
120x120x12.5 SHS
- Designation
- 120x120x12.5
- Outside Dimension (D)
- 120 mm
- Wall Thickness (t)
- 12.5 mm
- Mass per Metre
- 40.9 kg/m
- Cross-Sectional Area
- 52.1 cm2
- Second Moment of Area I
- 982 cm4
- Elastic Modulus Z
- 164 cm3
- Plastic Modulus S
- 207 cm3
- Radius of Gyration r
- 4.34 cm
- Torsional Constant (It)
- 1,623 cm4
- Surface Area per Metre
- 0.448 m2/m
- Surface Area per Tonne
- 11 m2/t
120x120 SHS — Overview
The 120x120 serial size group contains 8 sections, ranging from 40.9 kg/m to 14.4 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.