Steel Sections

FL Section Properties

Cross-section database with dimensions and mechanical properties per EN 10058. FL profiles: 213 sections.

Tip: the Find by requirements button filters the table by Wpl, Iy, dimensions or weight. Searching across all families? Use Find the lightest section.

	GEOMETRY		AREA	BENDING
Profile	b[mm]▲	t[mm]▲	A[cm²]▲	I_y[cm⁴]▲	I_z[cm⁴]▲	W_el,y[cm³]▲	W_pl,y[cm³]▲	G[kg/m]▲
FL 10×5	10.00	5.00	0.50	0.04	0.01	0.08	0.13	0.39
FL 12×5	12.00	5.00	0.60	0.07	0.01	0.12	0.18	0.47
FL 12×6	12.00	6.00	0.72	0.09	0.02	0.14	0.22	0.57
FL 15×5	15.00	5.00	0.75	0.14	0.02	0.19	0.28	0.59
FL 15×6	15.00	6.00	0.90	0.17	0.03	0.23	0.34	0.71
FL 15×8	15.00	8.00	1.20	0.23	0.06	0.30	0.45	0.94
FL 15×10	15.00	10.00	1.50	0.28	0.13	0.38	0.56	1.18
FL 16×5	16.00	5.00	0.80	0.17	0.02	0.21	0.32	0.63
FL 16×6	16.00	6.00	0.96	0.20	0.03	0.26	0.38	0.75
FL 16×8	16.00	8.00	1.28	0.27	0.07	0.34	0.51	1.00
FL 16×10	16.00	10.00	1.60	0.34	0.13	0.43	0.64	1.26
FL 20×4	20.00	4.00	0.80	0.27	0.01	0.27	0.40	0.63
FL 20×5	20.00	5.00	1.00	0.33	0.02	0.33	0.50	0.78
FL 20×6	20.00	6.00	1.20	0.40	0.04	0.40	0.60	0.94
FL 20×8	20.00	8.00	1.60	0.53	0.09	0.53	0.80	1.26
FL 20×10	20.00	10.00	2.00	0.67	0.17	0.67	1.00	1.57
FL 20×12	20.00	12.00	2.40	0.80	0.29	0.80	1.20	1.88
FL 20×15	20.00	15.00	3.00	1.00	0.56	1.00	1.50	2.35
FL 25×4	25.00	4.00	1.00	0.52	0.01	0.42	0.63	0.78
FL 25×5	25.00	5.00	1.25	0.65	0.03	0.52	0.78	0.98
FL 25×6	25.00	6.00	1.50	0.78	0.04	0.63	0.94	1.18
FL 25×8	25.00	8.00	2.00	1.04	0.11	0.83	1.25	1.57
FL 25×10	25.00	10.00	2.50	1.30	0.21	1.04	1.56	1.96
FL 25×12	25.00	12.00	3.00	1.56	0.36	1.25	1.88	2.35
FL 25×15	25.00	15.00	3.75	1.95	0.70	1.56	2.34	2.94
FL 30×4	30.00	4.00	1.20	0.90	0.02	0.60	0.90	0.94
FL 30×5	30.00	5.00	1.50	1.13	0.03	0.75	1.13	1.18
FL 30×6	30.00	6.00	1.80	1.35	0.05	0.90	1.35	1.41
FL 30×8	30.00	8.00	2.40	1.80	0.13	1.20	1.80	1.88
FL 30×10	30.00	10.00	3.00	2.25	0.25	1.50	2.25	2.35
FL 30×12	30.00	12.00	3.60	2.70	0.43	1.80	2.70	2.83
FL 30×15	30.00	15.00	4.50	3.38	0.84	2.25	3.38	3.53
FL 30×20	30.00	20.00	6.00	4.50	2.00	3.00	4.50	4.71
FL 35×4	35.00	4.00	1.40	1.43	0.02	0.82	1.23	1.10
FL 35×5	35.00	5.00	1.75	1.79	0.04	1.02	1.53	1.37
FL 35×6	35.00	6.00	2.10	2.14	0.06	1.23	1.84	1.65
FL 35×8	35.00	8.00	2.80	2.86	0.15	1.63	2.45	2.20
FL 35×10	35.00	10.00	3.50	3.57	0.29	2.04	3.06	2.75
FL 35×12	35.00	12.00	4.20	4.29	0.50	2.45	3.67	3.30
FL 35×15	35.00	15.00	5.25	5.36	0.98	3.06	4.59	4.12
FL 35×20	35.00	20.00	7.00	7.15	2.33	4.08	6.13	5.49
FL 40×4	40.00	4.00	1.60	2.13	0.02	1.07	1.60	1.26
FL 40×5	40.00	5.00	2.00	2.67	0.04	1.33	2.00	1.57
FL 40×6	40.00	6.00	2.40	3.20	0.07	1.60	2.40	1.88
FL 40×8	40.00	8.00	3.20	4.27	0.17	2.13	3.20	2.51
FL 40×10	40.00	10.00	4.00	5.33	0.33	2.67	4.00	3.14
FL 40×12	40.00	12.00	4.80	6.40	0.58	3.20	4.80	3.77
FL 40×15	40.00	15.00	6.00	8.00	1.13	4.00	6.00	4.71
FL 40×20	40.00	20.00	8.00	10.67	2.67	5.33	8.00	6.28
FL 40×25	40.00	25.00	10.00	13.33	5.21	6.67	10.00	7.85
FL 40×30	40.00	30.00	12.00	16.00	9.00	8.00	12.00	9.42
FL 45×4	45.00	4.00	1.80	3.04	0.02	1.35	2.02	1.41
FL 45×5	45.00	5.00	2.25	3.80	0.05	1.69	2.53	1.77
FL 45×6	45.00	6.00	2.70	4.56	0.08	2.02	3.04	2.12
FL 45×8	45.00	8.00	3.60	6.08	0.19	2.70	4.05	2.83
FL 45×10	45.00	10.00	4.50	7.59	0.38	3.38	5.06	3.53
FL 45×12	45.00	12.00	5.40	9.11	0.65	4.05	6.08	4.24
FL 45×15	45.00	15.00	6.75	11.39	1.27	5.06	7.59	5.30
FL 45×20	45.00	20.00	9.00	15.19	3.00	6.75	10.13	7.06
FL 45×25	45.00	25.00	11.25	18.98	5.86	8.44	12.66	8.83
FL 45×30	45.00	30.00	13.50	22.78	10.13	10.13	15.19	10.60
FL 50×4	50.00	4.00	2.00	4.17	0.03	1.67	2.50	1.57
FL 50×5	50.00	5.00	2.50	5.21	0.05	2.08	3.13	1.96
FL 50×6	50.00	6.00	3.00	6.25	0.09	2.50	3.75	2.35
FL 50×8	50.00	8.00	4.00	8.33	0.21	3.33	5.00	3.14
FL 50×10	50.00	10.00	5.00	10.42	0.42	4.17	6.25	3.92
FL 50×12	50.00	12.00	6.00	12.50	0.72	5.00	7.50	4.71
FL 50×15	50.00	15.00	7.50	15.63	1.41	6.25	9.38	5.89
FL 50×20	50.00	20.00	10.00	20.83	3.33	8.33	12.50	7.85
FL 50×25	50.00	25.00	12.50	26.04	6.51	10.42	15.63	9.81
FL 50×30	50.00	30.00	15.00	31.25	11.25	12.50	18.75	11.77
FL 60×5	60.00	5.00	3.00	9.00	0.06	3.00	4.50	2.35
FL 60×6	60.00	6.00	3.60	10.80	0.11	3.60	5.40	2.83
FL 60×8	60.00	8.00	4.80	14.40	0.26	4.80	7.20	3.77
FL 60×10	60.00	10.00	6.00	18.00	0.50	6.00	9.00	4.71
FL 60×12	60.00	12.00	7.20	21.60	0.86	7.20	10.80	5.65
FL 60×15	60.00	15.00	9.00	27.00	1.69	9.00	13.50	7.06
FL 60×20	60.00	20.00	12.00	36.00	4.00	12.00	18.00	9.42
FL 60×25	60.00	25.00	15.00	45.00	7.81	15.00	22.50	11.77
FL 60×30	60.00	30.00	18.00	54.00	13.50	18.00	27.00	14.13
FL 60×35	60.00	35.00	21.00	63.00	21.44	21.00	31.50	16.48
FL 60×40	60.00	40.00	24.00	72.00	32.00	24.00	36.00	18.84
FL 70×5	70.00	5.00	3.50	14.29	0.07	4.08	6.13	2.75
FL 70×6	70.00	6.00	4.20	17.15	0.13	4.90	7.35	3.30
FL 70×8	70.00	8.00	5.60	22.87	0.30	6.53	9.80	4.40
FL 70×10	70.00	10.00	7.00	28.58	0.58	8.17	12.25	5.49
FL 70×12	70.00	12.00	8.40	34.30	1.01	9.80	14.70	6.59
FL 70×15	70.00	15.00	10.50	42.88	1.97	12.25	18.38	8.24
FL 70×20	70.00	20.00	14.00	57.17	4.67	16.33	24.50	10.99
FL 70×25	70.00	25.00	17.50	71.46	9.11	20.42	30.63	13.74
FL 70×30	70.00	30.00	21.00	85.75	15.75	24.50	36.75	16.48
FL 70×35	70.00	35.00	24.50	100.04	25.01	28.58	42.88	19.23
FL 70×40	70.00	40.00	28.00	114.33	37.33	32.67	49.00	21.98
FL 80×5	80.00	5.00	4.00	21.33	0.08	5.33	8.00	3.14
FL 80×6	80.00	6.00	4.80	25.60	0.14	6.40	9.60	3.77
FL 80×8	80.00	8.00	6.40	34.13	0.34	8.53	12.80	5.02
FL 80×10	80.00	10.00	8.00	42.67	0.67	10.67	16.00	6.28
FL 80×12	80.00	12.00	9.60	51.20	1.15	12.80	19.20	7.54
FL 80×15	80.00	15.00	12.00	64.00	2.25	16.00	24.00	9.42
FL 80×20	80.00	20.00	16.00	85.33	5.33	21.33	32.00	12.56
FL 80×25	80.00	25.00	20.00	106.67	10.42	26.67	40.00	15.70
FL 80×30	80.00	30.00	24.00	128.00	18.00	32.00	48.00	18.84
FL 80×35	80.00	35.00	28.00	149.33	28.58	37.33	56.00	21.98
FL 80×40	80.00	40.00	32.00	170.67	42.67	42.67	64.00	25.12
FL 80×50	80.00	50.00	40.00	213.33	83.33	53.33	80.00	31.40
FL 80×60	80.00	60.00	48.00	256.00	144.00	64.00	96.00	37.68
FL 90×5	90.00	5.00	4.50	30.38	0.09	6.75	10.13	3.53
FL 90×6	90.00	6.00	5.40	36.45	0.16	8.10	12.15	4.24
FL 90×8	90.00	8.00	7.20	48.60	0.38	10.80	16.20	5.65
FL 90×10	90.00	10.00	9.00	60.75	0.75	13.50	20.25	7.06
FL 90×12	90.00	12.00	10.80	72.90	1.30	16.20	24.30	8.48
FL 90×15	90.00	15.00	13.50	91.13	2.53	20.25	30.38	10.60
FL 90×20	90.00	20.00	18.00	121.50	6.00	27.00	40.50	14.13
FL 90×25	90.00	25.00	22.50	151.88	11.72	33.75	50.63	17.66
FL 90×30	90.00	30.00	27.00	182.25	20.25	40.50	60.75	21.19
FL 90×35	90.00	35.00	31.50	212.63	32.16	47.25	70.88	24.73
FL 90×40	90.00	40.00	36.00	243.00	48.00	54.00	81.00	28.26
FL 90×50	90.00	50.00	45.00	303.75	93.75	67.50	101.25	35.32
FL 90×60	90.00	60.00	54.00	364.50	162.00	81.00	121.50	42.39
FL 100×5	100.00	5.00	5.00	41.67	0.10	8.33	12.50	3.92
FL 100×6	100.00	6.00	6.00	50.00	0.18	10.00	15.00	4.71
FL 100×8	100.00	8.00	8.00	66.67	0.43	13.33	20.00	6.28
FL 100×10	100.00	10.00	10.00	83.33	0.83	16.67	25.00	7.85
FL 100×12	100.00	12.00	12.00	100.00	1.44	20.00	30.00	9.42
FL 100×15	100.00	15.00	15.00	125.00	2.81	25.00	37.50	11.77
FL 100×20	100.00	20.00	20.00	166.67	6.67	33.33	50.00	15.70
FL 100×25	100.00	25.00	25.00	208.33	13.02	41.67	62.50	19.62
FL 100×30	100.00	30.00	30.00	250.00	22.50	50.00	75.00	23.55
FL 100×35	100.00	35.00	35.00	291.67	35.73	58.33	87.50	27.47
FL 100×40	100.00	40.00	40.00	333.33	53.33	66.67	100.00	31.40
FL 100×50	100.00	50.00	50.00	416.67	104.17	83.33	125.00	39.25
FL 100×60	100.00	60.00	60.00	500.00	180.00	100.00	150.00	47.10
FL 120×6	120.00	6.00	7.20	86.40	0.22	14.40	21.60	5.65
FL 120×8	120.00	8.00	9.60	115.20	0.51	19.20	28.80	7.54
FL 120×10	120.00	10.00	12.00	144.00	1.00	24.00	36.00	9.42
FL 120×12	120.00	12.00	14.40	172.80	1.73	28.80	43.20	11.30
FL 120×15	120.00	15.00	18.00	216.00	3.38	36.00	54.00	14.13
FL 120×20	120.00	20.00	24.00	288.00	8.00	48.00	72.00	18.84
FL 120×25	120.00	25.00	30.00	360.00	15.63	60.00	90.00	23.55
FL 120×30	120.00	30.00	36.00	432.00	27.00	72.00	108.00	28.26
FL 120×35	120.00	35.00	42.00	504.00	42.88	84.00	126.00	32.97
FL 120×40	120.00	40.00	48.00	576.00	64.00	96.00	144.00	37.68
FL 120×50	120.00	50.00	60.00	720.00	125.00	120.00	180.00	47.10
FL 120×60	120.00	60.00	72.00	864.00	216.00	144.00	216.00	56.52
FL 130×8	130.00	8.00	10.40	146.47	0.55	22.53	33.80	8.16
FL 130×10	130.00	10.00	13.00	183.08	1.08	28.17	42.25	10.20
FL 130×12	130.00	12.00	15.60	219.70	1.87	33.80	50.70	12.25
FL 130×15	130.00	15.00	19.50	274.63	3.66	42.25	63.38	15.31
FL 130×20	130.00	20.00	26.00	366.17	8.67	56.33	84.50	20.41
FL 130×25	130.00	25.00	32.50	457.71	16.93	70.42	105.63	25.51
FL 130×30	130.00	30.00	39.00	549.25	29.25	84.50	126.75	30.61
FL 130×35	130.00	35.00	45.50	640.79	46.45	98.58	147.88	35.72
FL 130×40	130.00	40.00	52.00	732.33	69.33	112.67	169.00	40.82
FL 130×50	130.00	50.00	65.00	915.42	135.42	140.83	211.25	51.02
FL 130×60	130.00	60.00	78.00	1 098.50	234.00	169.00	253.50	61.23
FL 140×8	140.00	8.00	11.20	182.93	0.60	26.13	39.20	8.79
FL 140×10	140.00	10.00	14.00	228.67	1.17	32.67	49.00	10.99
FL 140×12	140.00	12.00	16.80	274.40	2.02	39.20	58.80	13.19
FL 140×15	140.00	15.00	21.00	343.00	3.94	49.00	73.50	16.48
FL 140×20	140.00	20.00	28.00	457.33	9.33	65.33	98.00	21.98
FL 140×25	140.00	25.00	35.00	571.67	18.23	81.67	122.50	27.47
FL 140×30	140.00	30.00	42.00	686.00	31.50	98.00	147.00	32.97
FL 140×35	140.00	35.00	49.00	800.33	50.02	114.33	171.50	38.46
FL 140×40	140.00	40.00	56.00	914.67	74.67	130.67	196.00	43.96
FL 140×50	140.00	50.00	70.00	1 143.33	145.83	163.33	245.00	54.95
FL 140×60	140.00	60.00	84.00	1 372.00	252.00	196.00	294.00	65.94
FL 150×6	150.00	6.00	9.00	168.75	0.27	22.50	33.75	7.06
FL 150×8	150.00	8.00	12.00	225.00	0.64	30.00	45.00	9.42
FL 150×10	150.00	10.00	15.00	281.25	1.25	37.50	56.25	11.77
FL 150×12	150.00	12.00	18.00	337.50	2.16	45.00	67.50	14.13
FL 150×15	150.00	15.00	22.50	421.88	4.22	56.25	84.38	17.66
FL 150×20	150.00	20.00	30.00	562.50	10.00	75.00	112.50	23.55
FL 150×25	150.00	25.00	37.50	703.13	19.53	93.75	140.63	29.44
FL 150×30	150.00	30.00	45.00	843.75	33.75	112.50	168.75	35.32
FL 150×35	150.00	35.00	52.50	984.38	53.59	131.25	196.88	41.21
FL 150×40	150.00	40.00	60.00	1 125.00	80.00	150.00	225.00	47.10
FL 150×50	150.00	50.00	75.00	1 406.25	156.25	187.50	281.25	58.87
FL 150×60	150.00	60.00	90.00	1 687.50	270.00	225.00	337.50	70.65
FL 150×80	150.00	80.00	120.00	2 250.00	640.00	300.00	450.00	94.20
FL 160×8	160.00	8.00	12.80	273.07	0.68	34.13	51.20	10.05
FL 160×10	160.00	10.00	16.00	341.33	1.33	42.67	64.00	12.56
FL 160×12	160.00	12.00	19.20	409.60	2.30	51.20	76.80	15.07
FL 160×15	160.00	15.00	24.00	512.00	4.50	64.00	96.00	18.84
FL 160×20	160.00	20.00	32.00	682.67	10.67	85.33	128.00	25.12
FL 160×25	160.00	25.00	40.00	853.33	20.83	106.67	160.00	31.40
FL 160×30	160.00	30.00	48.00	1 024.00	36.00	128.00	192.00	37.68
FL 160×35	160.00	35.00	56.00	1 194.67	57.17	149.33	224.00	43.96
FL 160×40	160.00	40.00	64.00	1 365.33	85.33	170.67	256.00	50.24
FL 160×50	160.00	50.00	80.00	1 706.67	166.67	213.33	320.00	62.80
FL 160×60	160.00	60.00	96.00	2 048.00	288.00	256.00	384.00	75.36
FL 170×8	170.00	8.00	13.60	327.53	0.73	38.53	57.80	10.68
FL 170×10	170.00	10.00	17.00	409.42	1.42	48.17	72.25	13.34
FL 170×12	170.00	12.00	20.40	491.30	2.45	57.80	86.70	16.01
FL 170×15	170.00	15.00	25.50	614.13	4.78	72.25	108.38	20.02
FL 170×20	170.00	20.00	34.00	818.83	11.33	96.33	144.50	26.69
FL 170×25	170.00	25.00	42.50	1 023.54	22.14	120.42	180.63	33.36
FL 170×30	170.00	30.00	51.00	1 228.25	38.25	144.50	216.75	40.03
FL 170×35	170.00	35.00	59.50	1 432.96	60.74	168.58	252.88	46.71
FL 170×40	170.00	40.00	68.00	1 637.67	90.67	192.67	289.00	53.38
FL 170×50	170.00	50.00	85.00	2 047.08	177.08	240.83	361.25	66.72
FL 170×60	170.00	60.00	102.00	2 456.50	306.00	289.00	433.50	80.07
FL 180×8	180.00	8.00	14.40	388.80	0.77	43.20	64.80	11.30
FL 180×10	180.00	10.00	18.00	486.00	1.50	54.00	81.00	14.13
FL 180×12	180.00	12.00	21.60	583.20	2.59	64.80	97.20	16.96
FL 180×15	180.00	15.00	27.00	729.00	5.06	81.00	121.50	21.19
FL 180×20	180.00	20.00	36.00	972.00	12.00	108.00	162.00	28.26
FL 180×25	180.00	25.00	45.00	1 215.00	23.44	135.00	202.50	35.32
FL 200×8	200.00	8.00	16.00	533.33	0.85	53.33	80.00	12.56
FL 200×10	200.00	10.00	20.00	666.67	1.67	66.67	100.00	15.70
FL 200×12	200.00	12.00	24.00	800.00	2.88	80.00	120.00	18.84
FL 200×15	200.00	15.00	30.00	1 000.00	5.63	100.00	150.00	23.55
FL 200×20	200.00	20.00	40.00	1 333.33	13.33	133.33	200.00	31.40
FL 200×25	200.00	25.00	50.00	1 666.67	26.04	166.67	250.00	39.25

About FL profiles

A flat bar (FL) is a hot rolled bar of rectangular cross-section defined by EN 10058. It is designated by width and thickness, for example FL 40×6.

Typical uses are gusset plates, stiffeners, splice plates, anchor parts, railings and general fabrication. Rectangle properties follow exact closed-form formulas, so the tabulated values are computed exactly rather than rounded catalogue figures.

The table covers the preferred sizes of EN 10058:2018: flat bars 10 to 150 mm wide and wide flats 160 to 200 mm, in thicknesses from 4 to 80 mm.

Frequently asked questions

How are flat bars designated?

By width and thickness in millimetres, for example FL 40×6 or simply 40×6. Spellings like 40x6 or 40*6 are common and the site search accepts them.

Which standard defines flat bars?

Dimensions and tolerances of hot rolled flat bars are given by EN 10058, with material per EN 10025.

Which axis of a flat bar is the strong one?

Axis y in our table means bending on edge, using the full width of the bar. Bending flat is far less stiff, see the Iz column.

Disclaimer: All content, data, and calculations on this website are provided "as is" for informational purposes only. While we strive for accuracy, we do not warrant that the content is complete, up-to-date, or free of errors. The content does not constitute professional advice and must be verified against the official applicable standards by a qualified person. Use of this data is strictly at the user's own risk, and we accept no liability for any direct or indirect damages resulting from its use.