不锈钢圆钢与不锈钢方钢理论重量表

直径d (或边长 a)/mm	精度组别			截面面积/cm?		理论质量(kg/m)
	1组	2组	3组
				圆 钢	方 钢	圆 钢	方 钢
	允许偏差/mm
5.5	士0.20	±0.30	士0.40	O.2375	0.30	0.186	0.237
6				0.2827	0.36	0.222	0.283
6.5				0.3318	0.42	0.260	0.332
7				0.3848	0.49	0.302	0.385
8	±0.25	±0.35	±0.40	0.5077	0.64	0.395	0.502
9				0.6362	0.81	0.499	0.636
10				0.7854	1.0	0.617	0.785
*1l				0.9503	1.21	0.746	0.95
12				1.131	1.44	0.888	1.13
13				1.327	1.69	1.04	1.33
14				1.539	1.96	1.2l	1.54
15				1.767	2.25	1.39	1.77
16				2.011	2.56	1.58	2.01
17				2.270	2.89	1.78	2.27
18				2.545	3.24	2.00	2.54
19				2.835	3.61	2.23	2.83
20				3.142	4.00	2.47	3.14
21	±O.30	±O.40	±O.50	3.464	4.41	2.72	3.46
22				3.80l	4.84	2.98	3.80
*23				4.155	5.29	3.26	4.15
24				4.524	5.76	3.55	4.52

25				4.909	6.25	3.85	4.91
26				5.309	6.76	4.17	5.3l
*27				5.726	7.29	4.49	5.72
28				6.158	7.84	4.83	6.15
*29				6.605	8.41	5.18	6.60
30				7.069	9.00	5.55	7.06
*31	±0.40	±0.50	±0.60	7.548	9.6l	5.93	7.54
32				8.042	10.24	6.31	8.04
*33				8.553	10.89	6.71	8.55
34				9.097	11.56	7.13	9.07
*35				9.62l	12.25	7.55	9.62
36				10.18	12.96	7.99	10.2
38				11.34	14.44	8.90	11.3
40				12.57	16.00	9.86	12.6
42				13.85	17.64	10.9	13.8
45				15.90	20.25	12.5	15.9
48				18.10	23.04	14.2	18.1
50				19.64	25.00	15.4	19.6
53	±0.60	士O.70	±0.80	22.06	28.09	17.3	22.O
*55				23.76	30.25	18.6	23.7
56				24.63	31.36	19.3	24.6
*58				26.42	33.64	20.7	26.4
60	±O.60	±O.70	±0.80	28.27	36.00	22.2	28.3
63				31.17	39.69	24.5	31.2
*65				33.18	42.25	26.O	33.2
*68				36.32	46.24	28.5	36.3
70				38.48	49.00	30.2	38.5
75				44.18	56.25	34.7	44.2