80x80 EA — Sizes, Dimensions & Properties

3 sizes in the 80x80 serial size group. All dimensions in mm, section properties in cm units.

DesignationMass (kg/m)Leg (mm)t (mm)A (cm2)Ixx (cm4)rxx (cm)rv (cm)
80x80x67.348069.3555.82.441.57
80x80x89.6380812.372.22.431.56
80x80x1011.9801015.187.52.411.55

80x80x6 EA

Designation
80x80x6
Mass per Metre
7.34 kg/m
Leg Length
80 mm
Thickness (t)
6 mm
Root Radius (r)
10 mm
Toe Radius (r2)
5 mm
Cross-Sectional Area
9.35 cm2
Centroid Distance cx
2.17 cm
Centroid Distance cy
2.17 cm
Second Moment of Area Ixx
55.8 cm4
Second Moment of Area Iyy
55.8 cm4
Radius of Gyration rxx
2.44 cm
Radius of Gyration ryy
2.44 cm
Elastic Modulus Zxx
9.57 cm3
Elastic Modulus Zyy
9.57 cm3
Second Moment of Area Iu
88.5 cm4
Second Moment of Area Iv
23.1 cm4
Radius of Gyration ru
3.08 cm
Radius of Gyration rv
1.57 cm
tan(alpha)
1

80x80x8 EA

Designation
80x80x8
Mass per Metre
9.63 kg/m
Leg Length
80 mm
Thickness (t)
8 mm
Root Radius (r)
10 mm
Toe Radius (r2)
5 mm
Cross-Sectional Area
12.3 cm2
Centroid Distance cx
2.26 cm
Centroid Distance cy
2.26 cm
Second Moment of Area Ixx
72.2 cm4
Second Moment of Area Iyy
72.2 cm4
Radius of Gyration rxx
2.43 cm
Radius of Gyration ryy
2.43 cm
Elastic Modulus Zxx
12.6 cm3
Elastic Modulus Zyy
12.6 cm3
Second Moment of Area Iu
115 cm4
Second Moment of Area Iv
29.9 cm4
Radius of Gyration ru
3.06 cm
Radius of Gyration rv
1.56 cm
tan(alpha)
1

80x80x10 EA

Designation
80x80x10
Mass per Metre
11.9 kg/m
Leg Length
80 mm
Thickness (t)
10 mm
Root Radius (r)
10 mm
Toe Radius (r2)
5 mm
Cross-Sectional Area
15.1 cm2
Centroid Distance cx
2.34 cm
Centroid Distance cy
2.34 cm
Second Moment of Area Ixx
87.5 cm4
Second Moment of Area Iyy
87.5 cm4
Radius of Gyration rxx
2.41 cm
Radius of Gyration ryy
2.41 cm
Elastic Modulus Zxx
15.4 cm3
Elastic Modulus Zyy
15.4 cm3
Second Moment of Area Iu
139 cm4
Second Moment of Area Iv
36.4 cm4
Radius of Gyration ru
3.03 cm
Radius of Gyration rv
1.55 cm
tan(alpha)
1

80x80 EA — Overview

The 80x80 serial size group contains 3 sections, ranging from 11.9 kg/m to 7.34 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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