C Channel Sizes Chart For Steel Channels - Amesweb

C CHANNEL SIZES CHART FOR STEEL CHANNELS

C channel sizes chart for dimensions, weight and section properties of steel channels. C channels are designated by the letter C followed by the nominal depth in inches and the weight in pounds per foot. Thus C 7 × 12.25 designates an American Standard C Channel with a depth of 7 inches and a nominal weight of 12.25 pounds per foot.

American Standard Steel C Channel Sizes
Desig- nation	Area, A, in2	Depth, d, in	Weight lb/ft	Flange		Web Thickness tw, in	Axis X-X			Axis Y-Y			x, in
				Width, bf, in	Thickness, tf, in		I, in4	S, in3	r, in	I, in4	S, in3	r, in
C15 x 50	14.7	15.00	50	3.716	0.650	0.716	404	53.8	5.24	11.0	3.78	0.867	0.798
C15 x 40	11.8	15.00	40	3.520	0.650	0.520	349	46.5	5.44	9.23	3.37	0.886	0.777
C15 x 33.9	9.96	15.00	33.9	3.400	0.650	0.400	315	42.0	5.62	8.13	3.11	0.904	0.787
C12 x 30	8.82	12.00	30	3.170	0.501	0.510	162	27.0	4.29	5.14	2.06	0.763	0.674
C12 x 25	7.35	12.00	25	3.047	0.501	0.387	144	24.1	4.43	4.47	1.88	0.780	0.674
C12 x 20.7	6.09	12.00	20.7	2.942	0.501	0.282	129	21.5	4.61	3.88	1.73	0.799	0.698
C10 x 30	8.82	10.00	30	3.033	0.436	0.673	103	20.7	3.42	3.94	1.65	0.669	0.649
C10 x 25	7.35	10.00	25	2.886	0.436	0.526	91.2	18.2	3.52	3.36	1.48	0.676	0.617
C10 x 20	5.88	10.00	20	2.739	0.436	0.379	78.9	15.8	3.66	2.81	1.32	0.692	0.606
C10 x 15.3	4.49	10.00	15.3	2.600	0.436	0.240	67.4	13.5	3.87	2.28	1.16	0.713	0.634
C9 x 20	5.88	9.00	20	2.648	0.413	0.448	60.9	13.5	3.22	2.42	1.17	0.642	0.583
C9 x 15	4.41	9.00	15	2.485	0.413	0.285	51.0	11.3	3.40	1.93	1.01	0.661	0.586
C9 x 13.4	3.94	9.00	13.4	2.433	0.413	0.233	47.9	10.6	3.48	1.76	0.962	0.669	0.601
Desig- nation	Area, A, in2	Depth, d, in	Weight lb/ft	Flange		Web Thickness tw, in	Axis X-X			Axis Y-Y			x, in
				Width, bf, in	Thickness, tf, in		I, in4	S, in3	r, in	I, in4	S, in3	r, in
C8 x 18.75	5.51	8.00	18.75	2.527	0.390	0.487	44.0	11.0	2.82	1.98	1.01	0.599	0.565
C8 x 13.75	4.04	8.00	13.75	2.343	0.390	0.303	36.1	9.03	2.99	1.53	0.854	0.615	0.553
C8 x 11.5	3.38	8.00	11.5	2.260	0.390	0.220	32.6	8.14	3.11	1.32	0.781	0.625	0.571
C7 x 14.75	4.33	7.00	14.75	2.299	0.366	0.419	27.2	7.78	2.51	1.38	0.779	0.564	0.532
C7 x 12.25	3.60	7.00	12.25	2.194	0.366	0.314	24.2	6.93	2.60	1.17	0.703	0.571	0.525
C7 x 9.8	2.87	7.00	9.8	2.090	0.366	0.210	21.3	6.08	2.72	0.968	0.625	0.581	0.540
C6 x 13	3.83	6.00	13	2.157	0.343	0.437	17.4	5.80	2.13	1.05	0.642	0.525	0.514
C6 x 10.5	3.09	6.00	10.5	2.034	0.343	0.314	15.2	5.06	2.22	0.866	0.564	0.529	0.499
C6 x 8.2	2.40	6.00	8.2	1.920	0.343	0.200	13.1	4.38	2.34	0.693	0.492	0.537	0.511
C5 x 9	2.64	5.00	9	1.885	0.320	0.325	8.90	3.56	1.83	0.632	0.450	0.489	0.478
C5 x 6.7	1.97	5.00	6.7	1.750	0.320	0.190	7.49	3.00	1.95	0.479	0.378	0.493	0.484
C4 x 7.25	2.13	4.00	7.25	1.721	0.296	0.321	4.59	2.29	1.47	0.433	0.343	0.450	0.459
C4 x 5.4	1.59	4.00	5.4	1.584	0.296	0.184	3.85	1.93	1.56	0.319	0.283	0.449	0.457
C3 x 6	1.76	3.00	6	1.596	0.273	0.356	2.07	1.38	1.08	0.305	0.268	0.416	0.455
C3 x 5	1.47	3.00	5	1.498	0.273	0.258	1.85	1.24	1.12	0.247	0.233	0.410	0.438
C3 x 4.1	1.21	3.00	4.1	1.410	0.273	0.170	1.66	1.10	1.17	0.197	0.202	0.404	0.436

Symbols: I = moment of inertia; S = section modulus; r = radius of gyration; x = distance from center of gravity of section to outer face of structural shape.

Supplements:

• Steel channel sizes calculator

Definitions:

Second Moment of Area: The capacity of a cross-section to resist bending.

Radius of Gyration (Area): The distance from an axis at which the area of a body may be assumed to be concentrated and the second moment area of this configuration equal to the second moment area of the actual body about the same axis.

Section Modulus: The moment of inertia of the area of the cross section of a structural member divided by the distance from the center of gravity to the farthest point of the section; a measure of the flexural strength of the beam.

Reference:

• Oberg, E. , Jones ,F.D. , Horton H.L. , Ryffel H.H., (2016) . Machinery's Handbook . 30th edition. Industrial Press Inc. pp 2615
• ASTM 6/A 6M - 05a , Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling