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Steel Angles Dimensions EN/AISC (RSA)

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In this article, we show the dimensions of equal and unequal steel angles for construction to the European (EN) and American (AISC) standards. 

STEEL ANGLES EUROPEAN NORMS (EN)

Steel angles can be divided into two main types, equal and unequal. Mild steel angles, also known as angles, angle bars, rolled steel angles (i.e RSA) are widely used in construction, industrial plants, machinery and equipment building, and other uses where structural stability is required by joining steel frames, plates, and other infrastructures.

Equal angle bars, standardized to EN 10056-1 (1998) and tolerances to EN 10056-2 (1993), have two parallel legs of the same length (size), whereas unequal angles have legs of two different sizes. The typical materials for mild steel angles are:

  • EN 10025 S275
  • EN 10025 S355

steel angles dimensions

Difference equal unequal steel angles

EQUAL STEEL ANGLES DIMENSIONS

The table shows the dimensions of equal steel angles per the European norms (steel angle weight in kilograms per meter and surface area in square meters by meter length). Equal steel angles have legs of the same exact size in mm.

Equal Steel Angle

h x b X t (in mm)

surface area in m2 per meter weight in kg/meter
16 x 16 x3 0.061 0.704
20 x 20 x3 0.077 0.902
20 x 20 x4 0.077 1.16
25 x 25 x3 0.097 1.14
25 x 25 x4 0.097 1.49
25 x 25 x5 0.097 1.81
30 x 30 x3 0.116 1.39
30 x 30 x4 0.116 1.81
30 x 30 x5 0.116 2.22
35 x 35 x3 0.136 1.63
35 x 35 x4 0.136 2.13
35 x 35 x5 0.136 2.62
35 x 35 x6 0.136 3.09
40 x 40 x3 0.155 1.88
40 x 40 x4 0.155 2.46
40 x 40 x5 0.155 3.03
40 x 40 x6 0.155 3.58
45 x 45 x5 0.174 3.44
45 x 45 x6 0.174 4.07
50 x 50 x4 0.194 3.11
50 x 50 x5 0.194 3.84
50 x 50 x6 0.194 4.55
50 x 50 x7 0.194 5.25
50 x 50 x8 0.194 5.93
50 x 50 x9 0.194 6.6
55 x 55 x6 0.213 5.05
55 x 55 x8 0.213 6.58
60 x 60 x 6 0.233 5.53
60 x 60 x 7 0.233 6.38
60 x 60 x 8 0.233 7.22
60 x 60 x 10 0.233 8.85
65 x 65 x 6 0.252 6.02
65 x 65 x 7 0.252 6.96
65 x 65 x 8 0.252 7.88
65 x 65 x 9 0.252 8.8
70 x 70 x 7 0.272 7.52
70 x 70 x 8 0.272 8.56
70 x 70 x 9 0.272 9.5
70 x 70 x 10 0.272 10.5
75 x 75 x 6 0.29 6.98
75 x 75 x 7 0.291 8.09
75 x 75 x 8 0.291 9.17
75 x 75 x 10 0.291 11.3
75 x 75 x 12 0.291 13.3
80 x 80 x 8 0.311 9.81
80 x 80 x 10 0.311 12.1
80 x 80 x 12 0.311 14.3
90 x 90 x 8 0.351 11.1
90 x 90 x 9 0.351 12.4
90 x 90 x 10 0.351 13.7
90 x 90 x 12 0.351 16.2
100 x 100 x 8 0.39 12.4
100 x 100 x 10 0.39 15.3
100 x 100 x 12 0.39 18.2
100 x 100 x 14 0.39 21
100 x 100 x 15 0.39 22.3
110 x 110 x 10 0.43 16.9
110 x 110 x 12 0.43 20.1
110 x 110 x 14 0.43 23.2
120 x 120 x 10 0.469 18.5
120 x 120 x 11 0.469 20.3
120 x 120 x 12 0.469 22
120 x 120 x 15 0.469 27.1
130 x 130 x 12 0.508 24
130 x 130 x 14 0.508 27.8
140 x 140 x 13 0.547 28
140 x 140 x 15 0.547 32
150 x 150 x 12 0.586 27.9
150 x 150 x 14 0.586 32.2
150 x 150 x 15 0.586 34.4
150 x 150 x 18 0.586 40.8
160 x 160 x 15 0.625 36.8
180 x 180 x 16 0.705 44.3
180 x 180 x 18 0.705 49.5
200 x 200 x 16 0.785 49.4
200 x 200 x 18 0.785 55.3
200 x 200 x 20 0.785 61.1
200 x 200 x 24 0.785 72.5

UNEQUAL STEEL ANGLES DIMENSIONS

The table shows the dimensions of unequal steel angles per the European norms (steel angle weight in kilograms per meter and surface area in square meters by meter length). Unequal steel angles have legs of the two different sizes (one shorter, one longer) in mm.

Unequal Steel Angle Dimensions

h x b x t (in mm)

surface area in m2 per meter weight in kg/meter
30 x 20 x 3 0.097 1.14
30 x 20 x 4 0.097 1.49
40 x 20 x 3 0.117 1.38
40 x 20 x 4 0.117 1.8
40 x 25 x 4 0.127 1.97
45 x 30 x 4 0.146 2.3
45 x 30 x 5 0.146 2.82
50 x 30 x 5 0.156 3.02
50 x 30 x 6 0.156 3.58
50 x 40 x 4 0.177 2.77
50 x 40 x 5 0.177 3.42
50 x 40 x 6 0.177 4.03
60 x 30 x 5 0.175 3.43
60 x 30 x 6 0.175 4.06
60 x 30 x 7 0.175 4.68
60 x 40 x 5 0.195 3.83
60 x 40 x 6 0.195 4.54
60 x 40 x 7 0.195 5.24
65 x 50 x 5 0.224 4.43
65 x 50 x 6 0.224 5.26
65 x 50 x 7 0.224 6.08
65 x 50 x 8 0.224 6.88
75 x 50 x 5 0.244 4.83
75 x 50 x 6 0.244 5.75
75 x 50 x 7 0.244 6.65
75 x 50 x 8 0.244 7.53
75 x 50 x 9 0.244 8.4
75 x 55 x 5 0.254 5.04
75 x 55 x 7 0.254 6.93
75 x 65 x 6 0.273 6.49
75 x 65 x 8 0.273 8.48
75 x 65 x 10 0.273 10.5
80 x 40 x 6 0.234 5.51
80 x 40 x 8 0.234 7.21
80 x 60 x 6 0.273 6.49
80 x 60 x 7 0.273 7.5
80 x 60 x 8 0.273 8.48
80 x 65 x 6 0.283 6.73
80 x 65 x 8 0.283 8.82
80 x 65 x 10 0.283 10.9
90 x 65 x 6 0.303 7.22
90 x 65 x 7 0.303 8.32
90 x 65 x 8 0.303 9.44
90 x 65 x 10 0.303 11.7
100 x 50 x 6 0.292 6.98
100 x 50 x 8 0.292 9.16
100 x 50 x 10 0.292 11.3
100 x 65 x 7 0.321 8.96
100 x 65 x 8 0.321 10.2
100 x 65 x 9 0.321 11.3
100 x 65 x 10 0.321 12.5
100 x 75 x 7 0.341 9.52
100 x 75 x 8 0.341 10.8
100 x 75 x 9 0.341 12.1
100 x 75 x 10 0.341 13.3
100 x 75 x 11 0.341 14.6
100 x 75 x 12 0.341 15.8
120 x 80 x 8 0.391 12.4
120 x 80 x 10 0.391 15.3
120 x 80 x 12 0.391 18.2
130 x 65 x 8 0.381 12.1
130 x 65 x 10 0.381 14.9
130 x 65 x 12 0.381 17.7
130 x 75 x 8 0.401 12.7
130 x 75 x 10 0.401 15.7
130 x 75 x 12 0.401 18.6
130 x 90 x 10 0.43 17
130 x 90 x 12 0.43 20.1
150 x 75 x 9 0.441 15.7
150 x 75 x 10 0.441 17.4
150 x 75 x 11 0.441 18.9
150 x 75 x 12 0.441 20.6
150 x 90 x 10 0.47 18.6
150 x 90 x 12 0.47 22
150 x 90 x 15 0.47 27.1
150 x100 x 10 0.489 19.3
150 x100 x 12 0.489 23
150 x100 x 14 0.489 26.6
160 x 80 x 10 0.469 18.5
160 x 80 x 12 0.469 22
160 x 80 x 14 0.469 25.4
200 x100 x 10 0.587 23.4
200 x100 x 12 0.587 27.8
200 x100 x 15 0.587 34.4

STEEL ANGLES AMERICAN NORMS (AISC A36)

The dimensions of mild steel angles a per the AISC standard are reported below:

 

Steel Angles Size in inches
(in x in)
Steel Angle Dimensions AISC Static Measures
Angle Legs length (inches) Thickness (inches) Sectional Area
(in2)
Weight
(lbf/ft)
Inertial Moment I
12 x 12 12 1 3/8 30.9 105 410.0
12 1 1/4 28.3 96.4 377.5
12 1 1/8 25.6 87.2 344.1
12 1 22.9 77.8 310.4
10 x 10 10 1 3/8 25.6 87.1 232.1
10 1 1/4 23.5 79.9 215.1
10 1 1/8 21.2 72.3 196.2
10 1 19.0 64.7 177.3
10 7/8 16.7 56.9 157.6
10 3/4 14.4 49.1 137.2
8 x 8 8 1 1/8 16.7 56.9 98.0
8 1 15.0 51.0 89.0
8 7/8 13.2 45.0 79.6
8 3/4 11.4 38.9 69.7
8 5/8 9.6 32.7 59.4
8 9/16 8.7 29.6 54.1
8 1/2 7.8 26.4 48.6
6 x 6 6 1 11.0 37.4 35.5
6 7/8 9.7 33.1 31.9
6 3/4 8.4 28.7 28.2
6 5/8 7.1 24.2 24.2
6 9/16 6.4 21.9 22.1
6 1/2 5.8 19.6 19.9
6 7/16 5.1 17.2 17.7
6 3/8 4.4 14.9 15.4
6 5/16 3.7 12.4 13.0
5 x 5 5 7/8 8.0 27.2 17.8
5 3/4 6.9 23.6 15.7
5 5/8 5.9 20.0 13.6
5 1/2 4.8 16.2 11.3
5 7/16 4.2 14.3 10.0
5 3/8 3.6 12.3 8.74
5 5/16 3.0 10.3 7.42
4 x 4 4 3/4 5.4 18.5 7.67
4 5/8 4.6 15.7 6.66
4 1/2 3.8 12.8 5.56
4 7/16 3.3 11.3 4.97
4 3/8 2.9 9.8 4.36
4 5/16 2.4 8.2 3.71
4 1/4 1.9 6.6 3.04
3 1/2 x 3 1/2 3 1/2 1/2 3.3 11.1 3.64
3 1/2 7/16 2.9 9.8 3.26
3 1/2 3/8 2.5 8.5 2.87
3 1/2 5/16 2.1 7.2 2.45
3 1/2 1/4 1.7 5.8 2.01
3 x 3 3 1/2 2.75 9.4 2.22
3 7/16 2.43 8.3 1.99
3 3/8 2.11 7.2 1.76
3 5/16 1.78 6.1 1.51
3 1/4 1.44 4.9 1.24
3 3/16 1.09 3.7 0.96
2 1/2 x 2 1/2 2 1/2 1/2 2.25 7.7 1.23
2 1/2 3/8 1.73 5.9 0.98
2 1/2 5/16 1.46 5.0 0.85
2 1/2 1/4 1.19 4.1 0.70
2 1/2 3/16 0.90 3.1 0.55
2 x 2 2 3/8 1.36 4.7 0.48
2 5/16 1.15 3.9 0.42
2 1/4 0.94 3.2 0.35
2 3/16 0.72 2.4 0.27
2 1/8 0.48 1.7 0.19

 

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