Beams Standard

STANDARD I-BEAMS S-SHAPES

CSA G40.21 – 50W

ASTM A572 GR50 / A992

Imperial			Metric			Depth (d) Inches		Width (b) Inches	Thickness (t) Inches	Thickness (w) Inches	a in.
S3 x	5.7–7.5	S75 x–	8–11	3	2.33–2.51	0.26	0.17–0.349	1 1/8	1 3/4	5/8	1.68–1.95
S3 x	5.7	S75 x	8	3	2.33	0.26	0.17	1 1/8	1 3/4	5/8	1.68
S3 x	7.5		11	3	2.51	0.26	0.349	1 1/8	1 3/4	5/8	1.95
S4 x	7.7–9.5*	S100 x–	11–14.1*	4	2.66–2.8	0.293	0.193–0.326	1 1/4	2 5/8	11/16	3.04–3.39
S4 x	7.7	S100 x	11	4	2.66	0.293	0.193	1 1/4	2 5/8	11/16	3.04
S4 x	9.5*		14.1*	4	2.8	0.293	0.326	1 1/4	2 5/8	11/16	3.39
S5 x	10	S130 x	15	5	3	0.326	0.214	1 3/8	3 1/2	3/4	4.92
S6 x	12.5–17.25	S150 x–	19–26	6	3.33–3.56	0.359	0.232–0.465	1 1/2	4 3/8	13/16	7.37–8.77
S6 x	12.5	S150 x	19	6	3.33	0.359	0.232	1 1/2	4 3/8	13/16	7.37
S6 x	17.25		26	6	3.56	0.359	0.465	1 1/2	4 3/8	13/16	8.77
S8 x	18.4–23	S200 x–	27–34	8	4–4.17	0.425	0.271–0.441	1 7/8	6 1/8	15/16	14.4–16.2
S8 x	18.4	S200 x	27	8	4	0.425	0.271	1 7/8	6 1/8	15/16	14.4
S8 x	23		34	8	4.17	0.425	0.441	1 7/8	6 1/8	15/16	16.2
S10 x	25.4–35	S250 x–	38–52	10	4.66–4.94	0.491	0.311–0.594	2 1/8	7 7/8	1 1/16	24.7–29.4
S10 x	25.4	S250 x	38	10	4.66	0.491	0.311	2 1/8	7 7/8	1 1/16	24.7
S10 x	35		52	10	4.94	0.491	0.594	2 1/8	7 7/8	1 1/16	29.4
S12 x	31.8–50.0*	S310 x–	47–74*	12	5–5.48	0.544–0.659	0.35–0.687	2 3/8	9 5/8–9 1/4	1 3/16–1 3/8	36.4–50.8
S12 x	31.8	S310 x	47	12	5	0.544	0.35	2 3/8	9 5/8	1 3/16	36.4
S12 x	35		52	12	5.08	0.544	0.428	2 3/8	9 5/8	1 3/16	38.2
S12 x	40.8*		60.7*	12	5.25	0.659	0.462	2 3/8	9 1/4	1 3/8	45.4
S12 x	50.0*		74*	12	5.48	0.659	0.687	2 3/8	9 1/4	1 3/8	50.8
S15 x	42.9–50.0	S380 x–	64–74	15	5.5–5.64	0.622	0.411–0.55	2 1/2	12 3/8	1 5/16	59.6–64.8
S15 x	42.9*	S380 x	64*	15	5.5	0.622	0.411	2 1/2	12 3/8	1 5/16	59.6
S15 x	50.0*		74*	15	5.64	0.622	0.55	2 1/2	12 3/8	1 5/16	64.8
S18 x	54.7–70.00	S460 x–	81.4–104	18	6–6.25	0.691	0.461–0.711	2 3/4	15 1/8	1 7/16	89.4–103
S18 x	54.7*	S460 x	81.4*	18	6	0.691	0.461	2 3/4	15 1/8	1 7/16	89.4
S18 x	70.00*		104*	18	6.25	0.691	0.711	2 3/4	15 1/8	1 7/16	103
S20 x	66.0–96.0	S510 x–	98–143	20–20.3	6.26–7.2	0.795–0.92	0.505–0.8	2 7/8–3 1/4	16 3/4–16 5/8	1 5/8–1 13/16	119–165
S20 x	66.0*	S510 x	98*	20	6.26	0.795	0.505	2 7/8	16 3/4	1 5/8	119
S20 x	75.0*		112*	20	6.39	0.795	0.635	2 7/8	16 3/4	1 5/8	128
S20 x	86.0*		128*	20.3	7.06	0.92	0.66	3 1/4	16 5/8	1 13/16	155
S20 x	96.0*		143*	20.3	7.2	0.92	0.8	3 1/4	16 5/8	1 13/16	165
S24 x	80.0–121.0	S610 x–	119–180	24–24.5	7–8.05	0.87–1.09	0.5–0.8	3 1/4–3 5/8	20 5/8	1 11/16–1 15/16	175–258
S24 x	80.0*	S610 x	119*	24	7	0.87	0.5	3 1/4	20 5/8	1 11/16	175
S24 x	90.0*		134*	24	7.13	0.87	0.625	3 1/4	20 5/8	1 11/16	187
S24 x	100.0*		149*	24	7.24	0.87	0.745	3 1/4	20 5/8	1 11/16	199
S24 x	106.0*		158*	24.5	7.87	1.09	0.62	3 5/8	20 5/8	1 15/16	240
S24 x	121.0*		180*	24.5	8.05	1.09	0.8	3 5/8	20 5/8	1 15/16	258

Metric			Imperial			Depth mm		Width mm	Thickness (mean) mm	Web Thickness mm	a mm
S75 x	8–11	S3 x–	5.7–7.5	176	259–164	16.6	14.3–18.9	28	44	16	27.4–32
S75 x	8	S3 x	5.7	176	259	16.6	14.3	28	44	16	27.4
S75 x	11		7.5	176	164	16.6	18.9	28	44	16	32
S100 x	11–14.1*	S4 x–	7.7–9.5*	102	168–171	17.4	14.8–18.3	32	68	17	50.3–55.9
S100 x	11	S4 x	7.7	102	168	17.4	14.8	32	68	17	50.3
S100 x	14.1*		9.5*	102	171	17.4	18.3	32	68	17	55.9
S130 x	15	S5 x	10	127	176	18.3	15.4	36	90	19	80.5
S150 x	19–26	S6 x–	12.5–17.25	152	185–191	19.1	15.9–11.8	40	111	20	121–143
S150 x	19	S6 x	12.5	152	185	19.1	15.9	40	111	20	121
S150 x	26		17.25	152	191	19.1	11.8	40	111	20	143
S200 x	27–34	S8 x–	18.4–23	203	102–106	10.8	16.9–11.2	48	155	24	237–266
S200 x	27	S8 x	18.4	203	102	10.8	16.9	48	155	24	237
S200 x	34		23	203	106	10.8	11.2	48	155	24	266
S250 x	38–52	S10 x–	25.4–35	254	118–126	12.5	17.9–15.1	55–56	202–201	26	405–484
S250 x	38	S10 x	25.4	254	118	12.5	17.9	55	202	26	405
S250 x	52		35	254	126	12.5	15.1	56	201	26	484
S310 x	47–74*	S12 x–	31.8–50.0*	305	127–139	13.8–16.7	18.9–17.4	59–61	246–235	29–35	598–833
S310 x	47	S12 x	31.8	305	127	13.8	18.9	59	246	29	598
S310 x	52		35	305	129	13.8	10.9	59	246	29	629
S310 x	60.7*		40.8*	305	133	16.7	11.7	61	235	35	744
S310 x	74*		50.0*	305	139	16.7	17.4	61	235	35	833
S380 x	64–74	S15 x–	42.9–50.0	381	140–143	15.8	10.4–14	65	314	34	980–1060
S380 x	64*	S15 x	42.9*	381	140	15.8	10.4	65	314	34	980
S380 x	74*		50.0*	381	143	15.8	14	65	314	34	1060
S460 x	81.4–104	S18 x–	54.7–70.00	457	152–159	17.6	11.7–18.1	70–71	383	37	1470–1690
S460 x	81.4*	S18 x	54.7*	457	152	17.6	11.7	70	383	37	1470
S460 x	104*		70.00*	457	159	17.6	18.1	71	383	37	1690
S510 x	98–143	S20 x–	66.0–96.0	508–516	159–183	20.2–23.4	12.8–20.3	73–82	428–424	40–46	1960–2710
S510 x	98*	S20 x	66.0*	508	159	20.2	12.8	73	428	40	1960
S510 x	112*		75.0*	508	162	20.2	16.1	73	428	40	2090
S510 x	128*		86.0*	516	179	23.4	16.8	81	424	46	2550
S510 x	143*		96.0*	516	183	23.4	20.3	82	424	46	2710
S610 x	119–180	S24 x–	80.0–121.0	610–622	178–204	22.1–27.7	12.7–20.3	83–92	524–522	43–50	2890–4220
S610 x	119*	S24 x	80.0*	610	178	22.1	12.7	83	524	43	2890
S610 x	134*		90.0*	610	181	22.1	15.9	83	524	43	3080
S610 x	149*		100.0*	610	184	22.1	18.9	83	524	43	3270
S610 x	158*		106.0*	622	200	27.7	15.7	92	522	50	3940
S610 x	180*		121.0*	622	204	27.7	20.3	92	522	50	4220

* Not available from Canadian Mills