Steel Angles Dimensions EN/AISC (RSA)

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

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 Ix
	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