305x165 UB — Sizes, Dimensions & Properties
3 sizes in the 305x165 serial size group. All dimensions in mm, section properties in cm units.
| Designation | Mass (kg/m) | h (mm) | b (mm) | tw (mm) | tf (mm) | A (cm2) | Ixx (cm4) | Iyy (cm4) | Zxx (cm3) | Sxx (cm3) | rxx (cm) | ryy (cm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 305x165x54 | 54 | 310.4 | 166.9 | 7.9 | 13.7 | 68.8 | 11,700 | 1,060 | 754 | 846 | 13 | 3.93 |
| 305x165x46 | 46.1 | 306.6 | 165.7 | 6.7 | 11.8 | 58.7 | 9,900 | 896 | 646 | 720 | 13 | 3.9 |
| 305x165x40 | 40.3 | 303.4 | 165 | 6 | 10.2 | 51.3 | 8,500 | 764 | 560 | 623 | 12.9 | 3.86 |
305x165x54 UB
- Designation
- 305x165x54
- Serial Size
- 305x165
- Mass per Metre
- 54 kg/m
- Depth of Section (h)
- 310.4 mm
- Width of Section (b)
- 166.9 mm
- Web Thickness (tw)
- 7.9 mm
- Flange Thickness (tf)
- 13.7 mm
- Root Radius (r)
- 8.9 mm
- Depth Between Fillets (d)
- 265.2 mm
- Local Buckling Ratio d/tw
- 33.6
- Local Buckling Ratio cf/tf
- 6.09
- Second Moment of Area Ixx
- 11,700 cm4
- Second Moment of Area Iyy
- 1,060 cm4
- Elastic Modulus Zxx
- 754 cm3
- Elastic Modulus Zyy
- 127 cm3
- Plastic Modulus Sxx
- 846 cm3
- Plastic Modulus Syy
- 196 cm3
- Radius of Gyration rxx
- 13 cm
- Radius of Gyration ryy
- 3.93 cm
- Cross-Sectional Area
- 68.8 cm2
- Buckling Parameter (u)
- 0.889
- Torsional Index (x)
- 23.6
- Warping Constant (Iw)
- 0.234 dm6
- Torsional Constant (It)
- 34.8 cm4
- Surface Area per Metre
- 1.26 m2/m
- Surface Area per Tonne
- 23.3 m2/t
305x165x46 UB
- Designation
- 305x165x46
- Serial Size
- 305x165
- Mass per Metre
- 46.1 kg/m
- Depth of Section (h)
- 306.6 mm
- Width of Section (b)
- 165.7 mm
- Web Thickness (tw)
- 6.7 mm
- Flange Thickness (tf)
- 11.8 mm
- Root Radius (r)
- 8.9 mm
- Depth Between Fillets (d)
- 265.2 mm
- Local Buckling Ratio d/tw
- 39.6
- Local Buckling Ratio cf/tf
- 7.02
- Second Moment of Area Ixx
- 9,900 cm4
- Second Moment of Area Iyy
- 896 cm4
- Elastic Modulus Zxx
- 646 cm3
- Elastic Modulus Zyy
- 108 cm3
- Plastic Modulus Sxx
- 720 cm3
- Plastic Modulus Syy
- 166 cm3
- Radius of Gyration rxx
- 13 cm
- Radius of Gyration ryy
- 3.9 cm
- Cross-Sectional Area
- 58.7 cm2
- Buckling Parameter (u)
- 0.891
- Torsional Index (x)
- 27.1
- Warping Constant (Iw)
- 0.195 dm6
- Torsional Constant (It)
- 22.2 cm4
- Surface Area per Metre
- 1.25 m2/m
- Surface Area per Tonne
- 27.1 m2/t
305x165x40 UB
- Designation
- 305x165x40
- Serial Size
- 305x165
- Mass per Metre
- 40.3 kg/m
- Depth of Section (h)
- 303.4 mm
- Width of Section (b)
- 165 mm
- Web Thickness (tw)
- 6 mm
- Flange Thickness (tf)
- 10.2 mm
- Root Radius (r)
- 8.9 mm
- Depth Between Fillets (d)
- 265.2 mm
- Local Buckling Ratio d/tw
- 44.2
- Local Buckling Ratio cf/tf
- 8.09
- Second Moment of Area Ixx
- 8,500 cm4
- Second Moment of Area Iyy
- 764 cm4
- Elastic Modulus Zxx
- 560 cm3
- Elastic Modulus Zyy
- 92.6 cm3
- Plastic Modulus Sxx
- 623 cm3
- Plastic Modulus Syy
- 142 cm3
- Radius of Gyration rxx
- 12.9 cm
- Radius of Gyration ryy
- 3.86 cm
- Cross-Sectional Area
- 51.3 cm2
- Buckling Parameter (u)
- 0.889
- Torsional Index (x)
- 31
- Warping Constant (Iw)
- 0.164 dm6
- Torsional Constant (It)
- 14.7 cm4
- Surface Area per Metre
- 1.24 m2/m
- Surface Area per Tonne
- 30.8 m2/t
305x165 UB — Overview
The 305x165 serial size group contains 3 sections, ranging from 40.3 kg/m to 54 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.