Gráfico de resistência de tubos de alumínio e aço

Strength chart of aluminum and steel tubes

May 25, 2024 Roberto Magalhães

What is flexural strength?

Flexural strength refers to the maximum stress that a material can withstand when it breaks or reaches a specified bending moment under a bending load. This stress is the maximum normal stress during bending and is measured in MPa (megapascals). It reflects the material's ability to resist bending and is used to measure its bending performance.

Circular tube bending strength

Specifications. (mm)	D	d	Thickness (mm)	Transversal area (millimeters ² )	Weight St. (Kg/M)	Weight Al (Kg/M)	I	Me and (Steel)	Me and (Al)
8	8	6.6	0.7	16.05	0.13	0.04	107.92	22231.50	7554.39
	8	6.4	0.8	6:10 p.m.	0.14	0.05	118.71	24453.63	8309.49
	8	6.2	0.9	20.07	0.16	0.05	128.53	26476.92	8997.01
	8	6	1.0	21.99	0.17	0.06	137.44	28313.60	9621.13
10	10	8.6	0.7	8:45 p.m.	0.16	0.06	222.36	45806.54	15565.33
	10	8.4	0.8	23.12	0.18	0.06	246.48	50775.25	17253.73
	10	8.2	0.9	25.73	0.20	0.07	268.94	55401.45	18825.74
	10	8	1.0	28.27	0.22	0.08	289.81	59701.25	20286.83
12	12	10.6	0.7	24.85	0.19	0.07	398.16	82020.77	27871.14
	12	10.4	0.8	28:15	0.22	0.08	443.62	91386.35	31053.61
	12	10.2	0.9	31.38	0.24	0.08	486.54	100226.90	34057.69
	12	10	1.0	34.56	0.27	0.09	527.00	108562.44	36890.15
13	13	11.4	0.8	30.66	0.24	0.08	572.92	118021.19	40104.29
14.5	14.5	13.1	0.7	30:35	0.24	0.08	724.29	149203.29	50700.15
	14.5	12.9	0.8	34.43	0.27	0.09	810.57	166977.19	56739.82
	14.5	12.7	0.9	38.45	0:30	0.10	892.93	183943.35	62505.02
	14.5	12.5	1.0	42.41	0.33	0.11	971.49	200126.62	68004.19
15	15	13.6	0.7	31:45	0.25	0.08	805.76	165986.46	56403.17
	15	13.4	0.8	35.69	0.28	0.10	902.38	185891.00	63166.85
	15	13.2	0.9	39.87	0.31	0.11	994.78	204923.98	69634.36
	15	13	1.0	43.98	0.34	0.12	1083.06	223111.19	75814.48
16	16	14.8	0.6	29.03	0.23	0.08	861.85	177541.24	60329.55
	16	14.6	0.7	33.65	0.26	0.09	986.60	203239.23	69061.88
	16	14.4	0.8	38:20	0:30	0.10	1106.32	227902.57	77442.62
	16	14.2	0.9	42.69	0.33	0.12	1221.16	251559.39	85481.35
	16	14	1.0	47.12	0.37	0.13	1331.25	274237.47	93187.49
17.5	17.5	16.3	0.6	31.86	0.25	0.09	1138.72	234577.05	79710.65
	17.5	16.1	0.7	36.95	0.29	0.10	1305.69	268971.53	91398.09
	17.5	15.9	0.8	41.97	0.33	0.11	1466.54	302107.83	102658.00
	17.5	15.7	0.9	46.94	0.37	0.13	1621.44	334017.02	113500.93
	17.5	15.5	1.0	51.84	0.40	0.14	1770.53	364729.77	123937.30
	17.5	15.1	1.2	61.45	0.48	0.17	2051.88	422686.73	143631.41
19	19	17.8	0.6	34.68	0.27	0.09	1469.35	302686.72	102854.71
	19	17.6	0.7	40.24	0.31	0.11	1687.12	347546.88	118098.45
	19	17.4	0.8	45.74	0.36	0.12	1897.59	390903.50	132831.29
	19	17.2	0.9	51.18	0.40	0.14	2100.93	432790.56	147064.75
	19	17	1.0	56.55	0.44	0.15	2297.29	473241.66	160810.27
	19	16.6	1.2	67.10	0.52	0.18	2669.75	549968.35	186882.45
22	22	20.8	0.6	40.34	0.31	0.11	2310.97	476059.17	161767.68
	22	20.6	0.7	46.84	0.37	0.13	2659.29	547813.52	186150.23
	22	20.4	0.8	53.28	0.42	0.14	2,997.61	617508.10	209832.85
	22	20.2	0.9	59.66	0.47	0.16	3326.13	685182.71	232829.08
	22	20	1.0	65.97	0.51	0.18	3645.03	750876.76	255152.30
	22	19.6	1.2	78.41	0.61	0.21	4254.75	876478.88	297832.63
25	25	23.8	0.6	45.99	0.36	0.12	3424.86	705521.67	239740.37
	25	23.6	0.7	53.44	0.42	0.14	3,947.63	813212.78	276334.44
	25	23.4	0.8	60.82	0.47	0.16	4457.28	918200.51	312009.88
	25	23.2	0.9	68.14	0.53	0.18	4954.03	1020530.49	346782.20
	25	23	1.0	75.40	0.59	0.20	5438.10	1120247.94	380666.78
	25	22.6	1.2	89.72	0.70	0.24	6369.05	1312024.29	445833.50
	25	22	1.5	110.74	0.86	0:30	7675.75	1581203.51	537302.16
	25	21	2.0	144.51	1.13	0.39	9628.20	1983408.36	673973.71
	25	20	2.5	176.71	1.38	0.48	11320.78	2332080.27	792454.46
28	28	26.6	0.7	60.04	0.47	0.16	5596.69	1152918.26	391768.34
	28	26	1.0	84.82	0.66	0.23	7740.10	1594460.35	541806.91
32	32	29	1.5	143.73	1.12	0.39	16753.28	3451175.44	1172729.52

Rectangular tube bending strength

Specifications. (mm)	H	B	R	Thickness (mm)	Transversal area (millimeters ² )	Weight St. (Kg/M)	Weight Al (Kg/M)	I	Me and (Steel)	Me and (Al)
16*8	16	8	1.2	0.6	26.43	0.21	0.07	836.01	172217.85	58520.63
	16	8	1.4	0.7	30.38	0.24	0.08	940.92	193830.13	65864.61
	16	8	1.6	0.8	34.19	0.27	0.09	1036.68	213556.85	72567.86
	16	8	1.8	0.9	37.87	0:30	0.10	1123.54	231449.31	78647.82
	16	8	two	1.0	41.42	0.32	0.11	1201.74	247558.24	84121.73
12*6	12	6	0.8	0.4	1:35 p.m.	0.10	0.04	240.74	49592.41	16851.79
	12	6	1.2	0.6	7:23 p.m.	0.15	0.05	328.01	67570.72	22960.92
	12	6
20*10	20	10	1.2	0.6	33.63	0.26	0.09	1703.31	350881.46	119231.56
	20	10	1.4	0.7	38.78	0:30	0.10	1932.19	398030.68	135253.14
	20	10	1.6	0.8	43.79	0.34	0.12	2146.21	442119.96	150234.94
	20	10	1.8	0.9	48.67	0.38	0.13	2345.70	483214.52	164199.11
	20	10	two	1.0	53.42	0.42	0.14	2530.97	521379.03	177167.63
	20	10	2.4	1.2	62.53	0.49	0.17	2860.07	589173.52	200204.59
22*22	22	22	1.2	0.6	50.43	0.39	0.14	3813.36	785552.24	266935.23
	22	22	1.4	0.7	58.38	0.46	0.16	4365.55	899303.29	305588.50
	22	22	1.6	0.8	66.19	0.52	0.18	4894.99	1008367.62	342649.19
	22	22	1.8	0.9	73.87	0.58	0.20	5402.07	1112826.50	378144.93

Bending resistance of flat elliptical tube

Specifications. (mm)	H	B	d	Thickness (mm)	Transversal area (millimeters ² )	Weight St. (Kg/M)	Weight Al (Kg/M)	I	Me and (Steel)	Me and (Al)
21.5*11	21.5	11	9.8	0.6	32:20	0.25	0.09	1604.15	330455.20	112290.60
	21.5	11	9.6	0.7	37.35	0.29	0.10	1842.08	379467.97	128945.43
	21.5	11	9.4	0.8	42.44	0.33	0.11	2072.07	426846.07	145044.78
	21.5	11	9.2	0.9	47.46	0.37	0.13	2294.30	472625.27	160600.82
	21.5	11	9	1.0	52.42	0.41	0.14	2508.94	516840.92	175625.56

Bending resistance of elliptical tube

Specifications. (mm)	The	B	Thickness (mm)	Transversal area (millimeters ² )	Weight St. (Kg/M)	Weight Al (Kg/M)	I	Me and (Steel)	Me and (Al)
16*8	8	4	0.6	9:49 p.m.	0.17	0.06	526.40	108439.22	36848.28
	8	4	0.7	24.85	0.19	0.07	600.24	123648.56	42016.50
	8	4	0.8	28:15	0.22	0.08	670.42	138106.70	46929.46
	8	4	0.9	31.38	0.24	0.08	737.08	151837.91	51595.41
	8	4	1.0	34.56	0.27	0.09	800.32	164866.07	56022.45