Steel section tables · 04 / 08
Equal Angle Sizes and Dimensions
Equal angles are L-sections with two legs of the same length. They are used for bracing, frames, lintels, edge trims and brackets. Sizes are written leg × leg × thickness.
Symbols
Symbol key
- Mass
- Mass per metre
- kg/m
- a
- Leg length
- mm
- t
- Thickness
- mm
- r1
- Root radius
- mm
- r2
- Toe radius
- mm
- A
- Area of section
- cm²
- c
- Back of leg to centroid
- cm
- Ix
- Second moment of area about x–x (equal to y–y)
- cm⁴
- Wel,x
- Elastic section modulus, x–x (equal to y–y)
- cm³
Table
Equal angles table
Select a column heading to sort. Every row links: add its ID to the address, for example #ea-80x80x6.
Popular sizes
| Designationserial size | Masskg/m | amm | tmm | r1mm | r2mm | Acm² | ccm | Ixcm⁴ | Wel,xcm³ |
|---|---|---|---|---|---|---|---|---|---|
| 20 × 20 × 3 | 0.88 | 20 | 3 | 3.5 | 1.75 | 1.12 | 0.598 | 0.392 | 0.279 |
| 25 × 25 × 3 | 1.12 | 25 | 3 | 3.5 | 1.75 | 1.42 | 0.723 | 0.803 | 0.452 |
| 25 × 25 × 4 | 1.45 | 25 | 4 | 3.5 | 1.75 | 1.85 | 0.762 | 1.02 | 0.586 |
| 25 × 25 × 5 | 1.78 | 25 | 5 | 3.5 | 1.75 | 2.26 | 0.799 | 1.21 | 0.711 |
| 30 × 30 × 3 | 1.36 | 30 | 3 | 5 | 2.5 | 1.74 | 0.835 | 1.4 | 0.649 |
| 30 × 30 × 4 | 1.78 | 30 | 4 | 5 | 2.5 | 2.27 | 0.878 | 1.8 | 0.85 |
| 30 × 30 × 5 | 2.18 | 30 | 5 | 5 | 2.5 | 2.78 | 0.918 | 2.16 | 1.04 |
| 35 × 35 × 4 | 2.09 | 35 | 4 | 5 | 2.5 | 2.67 | 1 | 2.95 | 1.18 |
| 40 × 40 × 3 | 1.84 | 40 | 3 | 6 | 3 | 2.35 | 1.07 | 3.45 | 1.18 |
| 40 × 40 × 4 | 2.42 | 40 | 4 | 6 | 3 | 3.08 | 1.12 | 4.47 | 1.55 |
| 40 × 40 × 5 | 2.97 | 40 | 5 | 6 | 3 | 3.79 | 1.16 | 5.43 | 1.91 |
| 40 × 40 × 6 | 3.52 | 40 | 6 | 6 | 3 | 4.48 | 1.2 | 6.31 | 2.26 |
| 45 × 45 × 3 | 2.09 | 45 | 3 | 7 | 3.5 | 2.66 | 1.18 | 4.93 | 1.49 |
| 45 × 45 × 4 | 2.74 | 45 | 4 | 7 | 3.5 | 3.49 | 1.23 | 6.43 | 1.97 |
| 45 × 45 × 4.5 | 3.06 | 45 | 4.5 | 7 | 3.5 | 3.9 | 1.26 | 7.15 | 2.2 |
| 45 × 45 × 5 | 3.38 | 45 | 5 | 7 | 3.5 | 4.3 | 1.28 | 7.84 | 2.43 |
| 45 × 45 × 6 | 4.00 | 45 | 6 | 7 | 3.5 | 5.09 | 1.32 | 9.16 | 2.88 |
| 50 × 50 × 3 | 2.33 | 50 | 3 | 7 | 3.5 | 2.96 | 1.31 | 6.86 | 1.86 |
| 50 × 50 × 4 | 3.06 | 50 | 4 | 7 | 3.5 | 3.89 | 1.36 | 8.97 | 2.46 |
| 50 × 50 × 5 | 3.77 | 50 | 5 | 7 | 3.5 | 4.8 | 1.4 | 11 | 3.05 |
| 50 × 50 × 6 | 4.47 | 50 | 6 | 7 | 3.5 | 5.69 | 1.45 | 12.8 | 3.61 |
| 50 × 50 × 8 | 5.82 | 50 | 8 | 7 | 3.5 | 7.41 | 1.52 | 16.3 | 4.68 |
| 60 × 60 × 5 | 4.57 | 60 | 5 | 8 | 4 | 5.82 | 1.64 | 19.4 | 4.45 |
| 60 × 60 × 6 | 5.42 | 60 | 6 | 8 | 4 | 6.91 | 1.69 | 22.8 | 5.29 |
| 60 × 60 × 8 | 7.09 | 60 | 8 | 8 | 4 | 9.03 | 1.77 | 29.2 | 6.89 |
| 60 × 60 × 10 | 8.69 | 60 | 10 | 8 | 4 | 11.1 | 1.85 | 34.9 | 8.41 |
| 65 × 65 × 7 | 6.83 | 65 | 7 | 9 | 4.5 | 8.7 | 1.85 | 33.4 | 7.18 |
| 70 × 70 × 6 | 6.38 | 70 | 6 | 9 | 4.5 | 8.13 | 1.93 | 36.9 | 7.27 |
| 70 × 70 × 7 | 7.38 | 70 | 7 | 9 | 4.5 | 9.4 | 1.97 | 42.3 | 8.41 |
| 70 × 70 × 8 | 8.36 | 70 | 8 | 9 | 4.5 | 10.6 | 2.01 | 47.5 | 9.52 |
| 70 × 70 × 10 | 10.3 | 70 | 10 | 9 | 4.5 | 13.1 | 2.09 | 57.2 | 11.7 |
| 75 × 75 × 6 | 6.85 | 75 | 6 | 9 | 4.5 | 8.73 | 2.05 | 45.8 | 8.41 |
| 75 × 75 × 8 | 8.99 | 75 | 8 | 9 | 4.5 | 11.4 | 2.14 | 59.1 | 11 |
| 80 × 80 × 6 | 7.34 | 80 | 6 | 10 | 5 | 9.35 | 2.17 | 55.8 | 9.57 |
| 80 × 80 × 8 | 9.63 | 80 | 8 | 10 | 5 | 12.3 | 2.26 | 72.2 | 12.6 |
| 80 × 80 × 10 | 11.9 | 80 | 10 | 10 | 5 | 15.1 | 2.34 | 87.5 | 15.4 |
| 90 × 90 × 6 | 8.30 | 90 | 6 | 11 | 5.5 | 10.6 | 2.41 | 80.3 | 12.2 |
| 90 × 90 × 7 | 9.61 | 90 | 7 | 11 | 5.5 | 12.2 | 2.45 | 92.5 | 14.1 |
| 90 × 90 × 8 | 10.9 | 90 | 8 | 11 | 5.5 | 13.9 | 2.5 | 104 | 16.1 |
| 90 × 90 × 9 | 12.2 | 90 | 9 | 11 | 5.5 | 15.5 | 2.54 | 116 | 17.9 |
| 90 × 90 × 10 | 13.4 | 90 | 10 | 11 | 5.5 | 17.1 | 2.58 | 127 | 19.8 |
| 90 × 90 × 12 | 15.9 | 90 | 12 | 11 | 5.5 | 20.3 | 2.66 | 148 | 23.3 |
| 100 × 100 × 8 | 12.2 | 100 | 8 | 12 | 6 | 15.5 | 2.74 | 145 | 19.9 |
| 100 × 100 × 10 | 15.0 | 100 | 10 | 12 | 6 | 19.2 | 2.82 | 177 | 24.6 |
| 100 × 100 × 12 | 17.8 | 100 | 12 | 12 | 6 | 22.7 | 2.9 | 207 | 29.1 |
| 100 × 100 × 15 | 21.9 | 100 | 15 | 12 | 6 | 27.9 | 3.02 | 249 | 35.6 |
| 120 × 120 × 8 | 14.7 | 120 | 8 | 13 | 6.5 | 18.7 | 3.23 | 256 | 29.1 |
| 120 × 120 × 10 | 18.2 | 120 | 10 | 13 | 6.5 | 23.2 | 3.31 | 313 | 36 |
| 120 × 120 × 12 | 21.6 | 120 | 12 | 13 | 6.5 | 27.5 | 3.4 | 368 | 42.7 |
| 120 × 120 × 15 | 26.6 | 120 | 15 | 13 | 6.5 | 33.9 | 3.51 | 445 | 52.4 |
| 130 × 130 × 12 | 23.5 | 130 | 12 | 14 | 7 | 30 | 3.64 | 472 | 50.4 |
| 150 × 150 × 10 | 23.0 | 150 | 10 | 16 | 8 | 29.3 | 4.03 | 624 | 56.9 |
| 150 × 150 × 12 | 27.3 | 150 | 12 | 16 | 8 | 34.8 | 4.12 | 737 | 67.7 |
| 150 × 150 × 15 | 33.8 | 150 | 15 | 16 | 8 | 43 | 4.25 | 898 | 83.5 |
| 150 × 150 × 18 | 40.1 | 150 | 18 | 16 | 8 | 51 | 4.37 | 1,050 | 98.7 |
| 160 × 160 × 15 | 36.2 | 160 | 15 | 17 | 8.5 | 46.1 | 4.49 | 1,099 | 95.5 |
| 180 × 180 × 16 | 43.5 | 180 | 16 | 18 | 9 | 55.4 | 5.02 | 1,682 | 130 |
| 180 × 180 × 18 | 48.6 | 180 | 18 | 18 | 9 | 61.9 | 5.1 | 1,866 | 145 |
| 200 × 200 × 16 | 48.5 | 200 | 16 | 18 | 9 | 61.8 | 5.52 | 2,342 | 162 |
| 200 × 200 × 18 | 54.2 | 200 | 18 | 18 | 9 | 69.1 | 5.6 | 2,600 | 181 |
| 200 × 200 × 20 | 59.9 | 200 | 20 | 18 | 9 | 76.3 | 5.68 | 2,851 | 199 |
| 200 × 200 × 24 | 71.1 | 200 | 24 | 18 | 9 | 90.6 | 5.84 | 3,331 | 235 |
| 250 × 250 × 25 | 93.6 | 250 | 25 | 20 | 10 | 119 | 7.12 | 6,975 | 390 |
| 250 × 250 × 28 | 104.0 | 250 | 28 | 18 | 9 | 133 | 7.24 | 7,697 | 433 |
| 250 × 250 × 32 | 118.0 | 250 | 32 | 20 | 10 | 150 | 7.38 | 8,597 | 488 |
| 250 × 250 × 35 | 128.0 | 250 | 35 | 18 | 9 | 163 | 7.5 | 9,264 | 529 |
Values are nominal. Reference only: check against current manufacturer data and a structural engineer before design use.
Calculator
Steel weight calculator
Pick a section and size, enter the length and quantity, and get the total weight. Plate and flat bar are worked out from their dimensions at 7,850 kg/m³.
- Section weight = mass per metre × length × quantity
- Plate or flat bar weight = length × width × thickness × 7,850 kg/m³ × quantity
A 305 × 165 × 40 UB is 40.3 kg/m, so four 6 m lengths weigh 40.3 × 6 × 4 = 967.2 kg. A 10 mm plate 1,000 × 500 mm weighs 1.0 × 0.5 × 0.01 × 7,850 = 39.25 kg. Weights are nominal and exclude coatings, plates and fittings.
Questions
Frequently asked questions
How are angle sizes written?
Leg × leg × thickness in millimetres. A 100 × 100 × 8 equal angle has two 100 mm legs, 8 mm thick, and weighs 12.2 kg per metre.
What are r1 and r2?
r1 is the root radius, the curve inside the corner where the legs meet. r2 is the toe radius at the end of each leg. Allow for both when detailing cleats, bolts and welds.
Where is the centroid of an angle?
Off the section, inside the corner. The table gives c, the distance from the back of each leg to the centroid. For a 100 × 100 × 8 angle it is 2.74 cm.
How do I work out the weight of an angle?
Multiply the mass per metre by the length. A 100 × 100 × 8 angle at 6 m weighs 12.2 × 6 = 73.2 kg.
Standards
Standards referenced
- BS 4-1:2005 Structural steel sections. Specification for hot-rolled sections (UB, UC, PFC)
- BS EN 10365:2017 Hot rolled steel channels, I and H sections. Dimensions and masses
- BS EN 10056-1:2017 Structural steel equal and unequal leg angles. Dimensions
- BS EN 10210-2:2019 Hot finished steel structural hollow sections. Tolerances, dimensions and sectional properties
- BS EN 10219-2:2019 Cold formed welded steel structural hollow sections (not covered by these tables)
Reference only
Reference only. Values are nominal figures for the standard UK section ranges. Check them against current manufacturer data, and have a structural engineer confirm sizes before you use them in design. Koyda Ltd accepts no liability for decisions based on these tables.
Sizes and dimensions are compiled from the standard section ranges and checked against current manufacturer data (British Steel for beams, columns, channels and large angles; Tata Steel Celsius for hollow sections) and independent published tables. We recalculated area, second moment of area and elastic modulus from the nominal dimensions for every size, and show a value only where it matches a published figure. Diagrams and layout are our own.
Other section tables
Other section tables
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