Properties - Parallel Flange Channels

Welcome to our Parallel Flange Channel properties page! Here you'll find properties for all UK Parallel Flange Channel steel sections described by the Steelwork Design Guide to BS5950-1:2000, Volume 1, Section Properties, Member Capacities, 7th Edition (also known as The Blue Book). Sort the table below according to any property and select a CAD file to download using the reference links in the left-most column.

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Section Reference	Second Moment of Area		Radius of Gyration		Elastic Modulus		Plastic Modulus		Buckling Parameter	Torsional Index	Warping Constant	Torsional Constant	Area of Section
	Axis x-x	Axis y-y	Axis x-x	Axis y-y	Axis x-x	Axis y-y	Axis x-x	Axis y-y
	cm⁴	cm⁴	cm	cm	cm³	cm³	cm³	cm³	u	x	H dm⁶	J cm⁴	A cm²
430x100x64	21900	722	16.3	2.97	1020	97.9	1220	176	0.917	22.5	0.219	63	82.1
380x100x54	15000	643	14.8	3.06	791	89.2	933	161	0.933	21.2	0.15	45.7	68.7
300x100x46	8230	568	11.9	3.13	549	81.7	641	148	0.944	17	0.0813	36.8	58
300x90x41	7220	404	11.7	2.77	481	63.1	568	114	0.934	18.4	0.0581	28.8	52.7
260x90x35	4730	353	10.3	2.82	364	56.3	425	102	0.943	17.2	0.0379	20.6	44.4
260x75x28	3620	185	10.1	2.3	278	34.4	328	62	0.932	20.5	0.0203	11.7	35.1
230x90x32	3520	334	9.27	2.86	306	55	355	98.9	0.949	15.1	0.0279	19.3	41
230x75x26	2750	181	9.17	2.35	239	34.8	278	63.2	0.945	17.3	0.0153	11.8	32.7
200x90x30	2520	314	8.16	2.88	252	53.4	291	94.5	0.952	12.9	0.0197	18.3	37.9
200x75x23	1960	170	8.11	2.39	196	33.8	227	60.6	0.956	14.7	0.0107	11.1	29.9
180x90x26	1820	277	7.4	2.89	202	47.4	232	83.5	0.95	12.8	0.0141	13.3	33.2
180x75x20	1370	146	7.27	2.38	152	28.8	176	51.8	0.945	15.3	0.00754	7.34	25.9
150x90x24	1160	253	6.18	2.89	155	44.4	179	76.9	0.937	10.8	0.0089	11.8	30.4
150x75x18	861	131	6.15	2.4	115	26.6	132	47.2	0.945	13.1	0.00467	6.1	22.8
125x65x15	483	80	5.07	2.06	77.3	18.8	89.9	33.2	0.942	11.1	0.00194	4.72	18.8
100x50x10	208	32.3	4	1.58	41.5	9.89	48.9	17.5	0.942	10	0.000491	2.53	13