Standard Channels

Standard Channels

CSA G40.21 – 44 W

STOCK LENGTHS 20.0 40.0 60.0

Flange
Metric		Imperial		Depth mm	Width mm	Thickness (mean) mm	Web Thickness mm	Section Modulus 103mm3
C75 x	5–9	C3 x–	3.5–6.0	76–	34–40	6.9	3.4–9.0	16.7–22.3
C75 x	5	C3 x	3.5	76	34	6.9	3.4	16.7
C75 x	6		4.1		35	6.9	4.3	17.6
C75 x	7		5.0		37	6.9	6.6	19.7
C75 x	9		6.0		40	6.9	9.0	22.3
C100 x	7–11	C4 x–	4.5–7.25	102–	38–43	7.5	3.2–8.2	30.0–37.4
C100 x	7	C4 x	4.5	102	38	7.5	3.2	30.0
C100 x	8		5.4		40	7.5	4.7	31.6
C100 x	9		6.25		42	7.5	6.3	34.6
C100 x	11		7.25		43	7.5	8.2	37.4
C130 x	10–17	C5 x–	6.7–11.5	127–	44–52	8.1	4.8–12.0	48.6–61.1
C130 x	10	C5 x	6.7	127	44	8.1	4.8	48.6
C130 x	13		9.0		47	8.1	8.3	57.6
C130 x	17		11.5		52	8.1	12.0	61.1
C150 x	12–19	C6 x–	8.2–13.0	152–	48–54	8.7	5.1–11.1	70.5–93.6
C150 x	12	C6 x	8.2	152	48	8.7	5.1	70.5
C150 x	16		10.5		51	8.7	8.0	81.8
C150 x	19		13.0		54	8.7	11.1	93.6
C180 x	15–22*	C7 x–	9.8–14.75	178–	53–58	9.3	5.3–0.6	99.6–127
C180 x	15	C7 x	9.8	178	53	9.3	5.3	99.6
C180 x	18		12.25		55	9.3	8.0	113
C180 x	22*		14.75		58	9.3	0.6	127
C200 x	17–28	C8 x–	11.5–18.75	203–	57–64	9.9	5.6–12.4	133–180
C200 x	17	C8 x	11.5	203	57	9.9	5.6	133
C200 x	21		13.75		59	9.9	7.7	147
C200 x	28		18.75		64	9.9	12.4	180
C230 x	20–30	C9 x–	13.4–20	229–	61–67	10.5	5.9–11.4	173–222
C230 x	20	C9 x	13.4	229	61	10.5	5.9	173
C230 x	22		15		63	10.5	7.2	186
C230 x	30		20		67	10.5	11.4	222
C250 x	23–45*	C10 x–	15.3–30	254–	65–76	11.1	6.1–17.1	219–337
C250 x	23	C10 x	15.3	254	65	11.1	6.1	219
C250 x	30		20		69	11.1	9.6	257
C250 x	37		25		73	11.1	13.4	299
C250 x	45*		30		76	11.1	17.1	337
C310 x	31–45	C12 x–	20.7–30.0	305–	74–80	12.7	7.2–13.0	351–442
C310 x	31*	C12 x	20.7*	305	74	12.7	7.2	351
C310 x	37*		25.0*		77	12.7	9.8	393
C310 x	45*		30.0*		80	12.7	13.0	442
C380 x	50–74	C15 x–	33.9–50.0	381–	86–94	16.5	10.2–18.2	687–881
C380 x	50*	C15 x	33.9*	381	86	16.5	10.2	687
C380 x	60*		40.0*		89	16.5	13.2	760
C380 x	74*		50.0*		94	16.5	18.2	881

Flange
Imperial		Metric		Depth ins.	Width ins.	Thickness (mean) ins.	Web Thickness ins.	Section Modulus ins.3
C3 x	3.5–6.0	C75 x–	5–9	3.00–	1.36–1.60	0.273	0.125–0.356	1.02–1.38
C3 x	3.5	C75 x	5	3.00	1.36	0.273	0.125	1.02
C3 x	4.1		6		1.41	0.273	0.170	1.10
C3 x	5.0		7		1.50	0.273	0.258	1.24
C3 x	6.0		9		1.60	0.273	0.356	1.38
C4 x	4.5–7.25	C100 x–	7–11	4.00–	1.52–1.72	0.296	0.145–0.321	1.83–2.29
C4 x	4.5	C100 x	7	4.00	1.52	0.296	0.145	1.83
C4 x	5.4		8		1.58	0.296	0.184	1.93
C4 x	6.25		9		1.65	0.296	0.247	2.10
C4 x	7.25		11		1.72	0.296	0.321	2.29
C5 x	6.7–11.5	C130 x–	10–17	5.00–	1.75–2.03	0.320	0.190–0.472	3.00–4.10
C5 x	6.7	C130 x	10	5.00	1.75	0.320	0.190	3.00
C5 x	9.0		13		1.88	0.320	0.325	3.56
C5 x	11.5		17		2.03	0.320	0.472	4.10
C6 x	8.2–13.0	C150 x–	12–19	6.00–	1.92–2.16	0.343	0.200–0.437	4.38–5.80
C6 x	8.2	C150 x	12	6.00	1.92	0.343	0.200	4.38
C6 x	10.5		16		2.03	0.343	0.314	5.06
C6 x	13.0		19		2.16	0.343	0.437	5.80
C7 x	9.8–14.75	C180 x–	15–22*	7.00–	2.09–2.30	0.366	0.210–0.419	6.08–7.75
C7 x	9.8	C180 x	15	7.00	2.09	0.366	0.210	6.08
C7 x	12.25		18		2.19	0.366	0.314	6.93
C7 x	14.75		22*		2.30	0.366	0.419	7.75
C8 x	11.5–18.8	C200 x–	17–28	8.00–	2.26–2.53	0.390	0.220–0.487	8.14–11.0
C8 x	11.5	C200 x	17	8.00	2.26	0.390	0.220	8.14
C8 x	13.8		21		2.34	0.390	0.303	9.03
C8 x	18.8		28		2.53	0.390	0.487	11.0
C9 x	13.4–20.0	C230 x–	20–30	9.00–	2.43–2.65	0.413	0.233–0.448	10.6–13.5
C9 x	13.4	C230 x	20	9.00	2.43	0.413	0.233	10.6
C9 x	15.0		22		2.48	0.413	0.285	11.3
C9 x	20.0		30		2.65	0.413	0.448	13.5
C10 x	15.3–30.0	C250 x–	23–45*	10.00–	2.60–3.03	0.436	0.240–0.673	13.5–20.7
C10 x	15.3	C250 x	23	10.00	2.60	0.436	0.240	13.5
C10 x	20.0		30		2.74	0.436	0.379	15.8
C10 x	25.0		37		2.89	0.436	0.526	18.2
C10 x	30.0		45*		3.03	0.436	0.673	20.7
C12 x	20.7–30.0	C310 x–	31–45	12.00–	2.94–3.17	0.501	0.282–0.510	21.5–27.0
C12 x	20.7*	C310 x	31*	12.00	2.94	0.501	0.282	21.5
C12 x	25.0*		37*		3.05	0.501	0.387	24.1
C12 x	30.0*		45*		3.17	0.501	0.510	27.0
C15 x	33.9–50.0	C380 x–	50–74	15.00–	3.40–3.72	0.650	0.400–0.716	42.0–53.8
C15 x	33.9*	C380 x	50*	15.00	3.40	0.650	0.400	42.0
C15 x	40.0*		60*		3.52	0.650	0.520	46.5
C15 x	50.0*		74*		3.72	0.650	0.716	53.8