收藏词条 编辑词条 热轧不等边角钢(GB 9788-88)
热轧不等边角钢尺寸、外形、重量及允许偏差(摘要) GB 9788-88
1主要内容与适用范围
本标准规定了热轧不等边角钢的尺寸、外形、重量及允许偏差。
本标准适用于热轧不等边角钢。
2尺寸及允许偏差
2．1截面尺寸及允许偏差
2．1．1不等边角钢的截面图示及标注符号如下图所示。
B-长边宽度；I-惯性矩；
b-短边宽度；W-截面系数；
d-边厚度；
i-惯性半径；
r-内圆弧半径；X0-重心距离；
r1-边端内圆弧半径；Y0-重心距离
标记示例
普通碳素钢甲类3号镇静钢，尺寸为160mm×100mm×10mm热轧不等边角钢的标记如下：
热轧不等边角钢 (160×100×10-GB 9788-88)/(A3-GB 700-79)
2.1.2不等边角钢的尺寸、截面面积、理论重量及截面特性参数应符合表1的规定。
表1
|
型 号 |
尺 寸 |
截面 面积 cm2 |
理论 重量 kg/m |
外表 面积 m2/m |
参 考 数 值 |
||||||||||||||||
|
X-X |
Y-Y |
X1-X1 |
Y1-Y1 |
u-u |
|||||||||||||||||
|
B |
b |
d |
r |
Ixcm4 |
ixcm |
Wx cm3 |
Iycm |
Iycm |
Wycm3 |
Ix1cm4 |
Y0cm |
Iy1cm4 |
X0cm |
Iucm4 |
iucm |
Wucm3 |
tgα |
||||
|
2.5/1.6 |
25 |
16 |
3 |
3.5 |
1.162 |
0.912 |
0.080 |
0.70 |
0.78 |
0.43 |
0.22 |
0.44 |
0.19 |
1.56 |
0.86 |
0.43 |
0.42 |
0.14 |
0.34 |
0.16 |
0.392 |
|
4 |
1.499 |
1.176 |
0.079 |
0.88 |
0.77 |
0.55 |
0.27 |
0.43 |
0.24 |
2.09 |
0.90 |
0.59 |
0.46 |
0.17 |
0.34 |
0.20 |
0.381 |
||||
|
3.2/2 |
32 |
20 |
3 |
1.492 |
1.171 |
0.102 |
1.53 |
1.01 |
0.72 |
0.46 |
0.55 |
0.30 |
3.27 |
1.08 |
0.82 |
0.49 |
0.28 |
0.43 |
0.25 |
0.382 |
|
|
4 |
1.939 |
1.522 |
0.101 |
1.93 |
1.00 |
0.93 |
0.57 |
0.54 |
0.39 |
4.37 |
1.12 |
1.12 |
0.53 |
0.35 |
0.42 |
0.32 |
0.374 |
||||
|
4/2.5 |
40 |
25 |
3 |
4 |
1.890 |
1.484 |
0.127 |
3.08 |
1.28 |
1.15 |
0.93 |
0.70 |
0.49 |
5.39 |
1.32 |
1.59 |
0.59 |
0.56 |
0.54 |
0.40 |
0.385 |
|
4 |
2.467 |
1.936 |
0.127 |
3.93 |
1.36 |
1.49 |
1.18 |
0.69 |
0.63 |
8.53 |
1.37 |
2.14 |
0.63 |
0.71 |
0.54 |
0.52 |
0.381 |
||||
|
4.5/2.8 |
45 |
28 |
3 |
5 |
2.149 |
1.687 |
0.143 |
4.45 |
1.44 |
1.47 |
1.34 |
0.79 |
0.62 |
9.10 |
1.47 |
2.23 |
0.64 |
0.80 |
0.61 |
0.51 |
0.383 |
|
4 |
2.806 |
2.203 |
0.143 |
5.69 |
1.42 |
1.91 |
1.70 |
0.78 |
0.80 |
12.13 |
1.51 |
3.00 |
0.68 |
1.02 |
0.60 |
0.66 |
0.380 |
||||
|
5/3.2 |
50 |
32 |
3 |
5.5 |
2.431 |
1.908 |
0.161 |
6.24 |
1.60 |
1.84 |
2.02 |
0.91 |
0.82 |
12.49 |
1.60 |
3.31 |
0.73 |
1.20 |
0.70 |
0.68 |
0.404 |
|
4 |
3.177 |
2.494 |
0.160 |
8.02 |
1.59 |
2.39 |
2.58 |
0.90 |
1.06 |
16.65 |
1.65 |
4.45 |
0.77 |
1.53 |
0.69 |
0.87 |
0.402 |
||||
|
5.6/3.6 |
56 |
36 |
3 |
6 |
2.743 |
2.153 |
0.181 |
8.88 |
1.80 |
2.32 |
2.92 |
1.03 |
1.05 |
17.54 |
1.78 |
4.70 |
0.80 |
1.73 |
0.79 |
0.87 |
0.408 |
|
4 |
3.590 |
2.818 |
0.180 |
11.45 |
1.79 |
3.03 |
3.76 |
1.02 |
1.37 |
23.39 |
1.82 |
6.33 |
0.85 |
2.23 |
0.79 |
1.13 |
0.408 |
||||
|
5 |
4.415 |
3.466 |
0.180 |
13.86 |
1.77 |
3.71 |
4.49 |
1.01 |
1.65 |
29.25 |
1.87 |
7.94 |
0.88 |
2.67 |
0.78 |
1.36 |
0.404 |
||||
|
6.3/4 |
63 |
40 |
4 |
7 |
4.058 |
3.185 |
0.202 |
16.49 |
2.02 |
3.87 |
5.23 |
1.14 |
1.70 |
33.30 |
2.04 |
8.63 |
0.92 |
3.12 |
0.88 |
1.40 |
0.398 |
|
5 |
4.993 |
3.920 |
0.202 |
20.02 |
2.00 |
4.74 |
6.31 |
1.12 |
2.71 |
41.63 |
2.08 |
10.86 |
0.95 |
3.76 |
0.87 |
1.71 |
0.396 |
||||
|
6 |
5.908 |
4.638 |
0.201 |
23.36 |
1.96 |
5.59 |
7.29 |
1.11 |
2.43 |
49.98 |
2.12 |
13.12 |
0.99 |
4.34 |
0.86 |
1.99 |
0.393 |
||||
|
7 |
6.802 |
5.339 |
0.201 |
26.53 |
1.98 |
6.40 |
8.24 |
1.10 |
2.78 |
58.07 |
2.15 |
15.47 |
1.03 |
4.97 |
0.86 |
2.29 |
0.389 |
||||
|
7/4. |
70 |
45 |
4 |
7.5 |
4.547 |
3.570 |
0.226 |
23.17 |
2.26 |
4.86 |
7.55 |
1.29 |
2.17 |
45.92 |
2.24 |
12.26 |
1.02 |
4.40 |
0.98 |
1.77 |
0.410 |
|
5 |
5.609 |
4.403 |
0.225 |
27.95 |
2.23 |
5.92 |
9.13 |
1.28 |
2.65 |
57.10 |
2.28 |
15.39 |
1.06 |
5.40 |
0.98 |
2.19 |
0.407 |
||||
|
6 |
6.647 |
5.218 |
0.225 |
32.54 |
2.21 |
6.95 |
10.62 |
1.26 |
3.12 |
68.35 |
2.32 |
18.58 |
1.09 |
6.35 |
0.98 |
2.59 |
0.404 |
||||
|
7 |
7.657 |
6.011 |
0.225 |
37.22 |
2.20 |
8.03 |
12.01 |
1.25 |
3.57 |
79.99 |
2.36 |
21.84 |
1.13 |
7.16 |
0.97 |
2.94 |
0.402 |
||||
|
(7.5/5) |
75 |
50 |
5 |
8 |
6.125 |
4.808 |
0.245 |
34.86 |
2.39 |
6.83 |
12.61 |
1.44 |
3.30 |
70.00 |
2.40 |
21.04 |
1.17 |
7.41 |
1.10 |
2.74 |
0.435 |
|
6 |
7.260 |
5.699 |
0.245 |
41.12 |
2.38 |
8.12 |
14.70 |
1.42 |
3.88 |
84.30 |
2.44 |
25.37 |
1.21 |
8.54 |
1.08 |
3.19 |
0.435 |
||||
|
8 |
9.467 |
7.431 |
0.244 |
52.39 |
2.35 |
10.52 |
18.53 |
1.40 |
4.99 |
112.50 |
2.52 |
34.23 |
1.29 |
10.87 |
1.07 |
4.10 |
0.429 |
||||
|
10 |
11.590 |
9.098 |
0.244 |
62.71 |
2.33 |
12.79 |
21.96 |
1.38 |
6.04 |
140.80 |
2.60 |
43.43 |
1.36 |
13.10 |
1.06 |
4.99 |
0.423 |
||||
|
8/5 |
80 |
50 |
5 |
8 |
6.375 |
5.005 |
0.255 |
41.96 |
2.56 |
7.78 |
12.82 |
1.42 |
3.32 |
85.21 |
2.60 |
21.06 |
1.14 |
7.66 |
1.10 |
2.74 |
0.388 |
|
6 |
7.560 |
5.935 |
0.255 |
49.49 |
2.56 |
9.25 |
14.95 |
1.41 |
3.91 |
102.53 |
2.65 |
25.41 |
1.18 |
8.85 |
1.08 |
3.20 |
0.387 |
||||
|
7 |
8.724 |
6.848 |
0.255 |
56.16 |
2.54 |
10.58 |
16.96 |
1.39 |
4.48 |
119.33 |
2.69 |
29.82 |
1.21 |
10.18 |
1.08 |
3.70 |
0.384 |
||||
|
8 |
9.867 |
7.745 |
0.254 |
62.83 |
2.52 |
11.92 |
18.85 |
1.38 |
5.03 |
136.41 |
2.73 |
34.32 |
1.25 |
11.38 |
1.07 |
4.16 |
0.381 |
||||
|
9/5.6 |
90 |
56 |
5 |
9 |
7.212 |
5.661 |
0.287 |
60.45 |
2.90 |
9.92 |
18.32 |
1.59 |
4.21 |
121.32 |
2.91 |
29.53 |
1.25 |
10.98 |
1.23 |
3.49 |
0.385 |
|
6 |
8.557 |
6.717 |
0.286 |
71.03 |
2.88 |
11.74 |
21.42 |
1.58 |
4.96 |
145.59 |
2.95 |
35.58 |
1.29 |
12.90 |
1.23 |
4.13 |
0.384 |
||||
|
7 |
9.880 |
7.756 |
0.286 |
81.01 |
2.86 |
13.49 |
24.36 |
1.57 |
5.70 |
169.60 |
3.00 |
41.71 |
1.33 |
14.67 |
1.22 |
4.72 |
0.382 |
||||
|
8 |
11.183 |
8.779 |
0.286 |
91.03 |
2.85 |
15.27 |
27.15 |
1.56 |
6.41 |
194.17 |
3.04 |
47.93 |
1.36 |
16.34 |
1.21 |
5.29 |
0.380 |
||||
|
10/6.3 |
100 |
63 |
6 |
10 |
9.617 |
7.550 |
0.320 |
99.06 |
3.21 |
14.64 |
30.94 |
1.79 |
6.35 |
199.71 |
3.24 |
50.50 |
1.43 |
18.42 |
1.38 |
5.25 |
0.394 |
|
7 |
11.111 |
8.722 |
0.320 |
113.45 |
3.20 |
16.88 |
35.26 |
1.78 |
7.29 |
233.00 |
3.28 |
59.14 |
1.47 |
21.00 |
1.38 |
6.02 |
0.394 |
||||
|
8 |
12.584 |
9.878 |
0.319 |
127.37 |
3.18 |
19.08 |
39.39 |
1.77 |
8.21 |
266.32 |
3.32 |
67.88 |
1.50 |
23.50 |
1.37 |
6.78 |
0.391 |
||||
|
10 |
15.467 |
12.142 |
0.319 |
153.81 |
3.15 |
23.32 |
47.12 |
1.74 |
9.98 |
333.06 |
3.40 |
85.73 |
1.58 |
28.33 |
1.35 |
8.24 |
0.387 |
||||
|
10/8 |
100 |
80 |
6 |
10.637 |
8.350 |
0.354 |
107.04 |
3.17 |
15.19 |
61.24 |
2.40 |
10.16 |
199.83 |
2.95 |
102.68 |
1.97 |
31.65 |
1.72 |
8.37 |
0.627 |
|
|
7 |
12.301 |
9.656 |
0.354 |
122.73 |
3.16 |
17.52 |
70.08 |
2.39 |
11.71 |
233.20 |
3.00 |
119.98 |
2.91 |
36.17 |
1.72 |
9.60 |
0.626 |
||||
|
8 |
13.944 |
10.946 |
0.353 |
137.92 |
3.14 |
19.81 |
78.58 |
2.37 |
13.21 |
266.61 |
3.04 |
137.37 |
2.05 |
40.58 |
1.71 |
10.80 |
0.625 |
||||
|
10 |
17.167 |
13.476 |
0.353 |
166.87 |
3.12 |
24.24 |
94.65 |
2.35 |
16.12 |
333.63 |
3.12 |
172.48 |
2.13 |
49.10 |
1.69 |
13.12 |
0.622 |
||||
|
11/7 |
110 |
70 |
6 |
10.637 |
8.350 |
0.354 |
133.37 |
3.54 |
17.85 |
42.92 |
2.01 |
7.90 |
265.78 |
3.53 |
69.08 |
1.57 |
25.36 |
1.54 |
6.53 |
0.403 |
|
|
7 |
12.301 |
9.656 |
0.354 |
153.00 |
3.53 |
20.60 |
49.01 |
2.00 |
9.09 |
310.07 |
3.57 |
80.82 |
1.61 |
28.95 |
1.53 |
7.50 |
0.402 |
||||
|
8 |
13.944 |
10.946 |
0.353 |
172.04 |
3.51 |
23.30 |
54.87 |
1.98 |
10.25 |
354.39 |
3.62 |
92.70 |
1.65 |
32.45 |
1.53 |
8.45 |
0.401 |
||||
|
10 |
17.167 |
13.476 |
0.353 |
208.39 |
3.48 |
28.54 |
65.88 |
1.96 |
12.48 |
443.13 |
3.70 |
116.83 |
1.72 |
39.20 |
1.51 |
10.29 |
0.397 |
||||
|
12.5/8 |
120 |
80 |
7 |
11 |
14.096 |
11.066 |
0.403 |
227.98 |
4.02 |
26.86 |
74.42 |
2.30 |
12.01 |
454.99 |
4.01 |
120.32 |
1.80 |
43.81 |
1.76 |
9.92 |
0.408 |
|
8 |
15.989 |
12.551 |
0.403 |
256.77 |
4.01 |
30.41 |
83.49 |
2.28 |
13.56 |
519.99 |
4.06 |
137.85 |
1.84 |
49.15 |
1.75 |
11.18 |
0.407 |
||||
|
10 |
19.712 |
15.474 |
0.402 |
312.04 |
3.98 |
37.33 |
100.67 |
2.26 |
16.56 |
650.09 |
4.14 |
173.40 |
1.92 |
59.45 |
1.74 |
13.64 |
0.404 |
||||
|
12 |
23.351 |
18.330 |
0.402 |
364.41 |
3.95 |
44.01 |
116.67 |
2.24 |
19.43 |
780.39 |
4.22 |
209.67 |
2.00 |
69.35 |
1.72 |
16.01 |
0.400 |
||||
|
14/9 |
140 |
90 |
8 |
12 |
18.038 |
14.160 |
0.453 |
365.64 |
4.50 |
38.48 |
120.69 |
2.59 |
17.34 |
730.53 |
4.50 |
195.79 |
2.04 |
70.83 |
1.98 |
14.31 |
0.411 |
|
10 |
22.261 |
17.475 |
0.452 |
455.50 |
4.47 |
47.31 |
140.03 |
2.56 |
21.22 |
913.20 |
4.58 |
245.92 |
2.12 |
85.82 |
1.96 |
17.48 |
0.409 |
||||
|
12 |
26.400 |
20.724 |
0.451 |
521.59 |
4.44 |
55.87 |
169.79 |
2.54 |
24.95 |
1096.01 |
4.66 |
296.89 |
2.19 |
100.21 |
1.95 |
20.54 |
0.406 |
||||
|
14 |
30.456 |
23.908 |
0.451 |
594.10 |
4.42 |
64.18 |
192.10 |
2.51 |
28.54 |
1279.26 |
4.74 |
348.82 |
2.27 |
114.13 |
1.94 |
23.52 |
0.403 |
||||
|
16/10 |
160 |
100 |
10 |
13 |
25.315 |
19.872 |
0.512 |
668.69 |
5.14 |
62.13 |
205.03 |
2.85 |
26.56 |
1362.81 |
5.24 |
336.59 |
2.28 |
121.74 |
2.19 |
21.92 |
0.390 |
|
12 |
30.054 |
23.592 |
0.511 |
784.91 |
5.11 |
73.49 |
239.06 |
2.82 |
31.28 |
1635.56 |
5.32 |
405.94 |
2.36 |
142.33 |
2.17 |
25.79 |
0.388 |
||||
|
14 |
34.709 |
27.247 |
0.510 |
896.30 |
5.08 |
84.56 |
271.20 |
2.80 |
35.83 |
1908.50 |
5.40 |
476.42 |
2.43 |
162.23 |
2.16 |
29.56 |
0.385 |
||||
|
16 |
39.281 |
30.835 |
0.510 |
1003.04 |
5.05 |
95.33 |
301.60 |
2.77 |
40.24 |
1181.71 |
5.48 |
548.22 |
2.51 |
82.57 |
2.16 |
33.44 |
0.382 |
||||
|
18/11 |
180 |
110 |
10 |
14 |
28.373 |
22.273 |
0.571 |
956.25 |
5.80 |
78.96 |
278.11 |
3.13 |
32.49 |
1940.40 |
5.89 |
447.22 |
2.44 |
166.50 |
2.42 |
26.88 |
0.376 |
|
12 |
33.712 |
26.464 |
0.571 |
1124.72 |
5.78 |
93.53 |
325.03 |
3.10 |
38.32 |
2328.38 |
5.98 |
538.94 |
2.52 |
194.87 |
2.40 |
31.66 |
0.374 |
||||
|
14 |
38.976 |
30.589 |
0.570 |
1289.91 |
5.75 |
107.76 |
369.55 |
3.08 |
43.97 |
2716.60 |
6.06 |
631.95 |
2.59 |
222.30 |
2.39 |
36.32 |
0.372 |
||||
|
16 |
44.139 |
34.649 |
0.569 |
1443.06 |
5.72 |
121.64 |
411.85 |
3.06 |
49.44 |
3105.15 |
6.14 |
726.46 |
2.67 |
248.94 |
2.38 |
40.87 |
0.369 |
||||
|
20/12.5 |
200 |
125 |
12 |
37.912 |
29.761 |
0.641 |
1570.90 |
6.44 |
116.73 |
483.16 |
3.57 |
49.99 |
3193.85 |
6.54 |
787.74 |
2.83 |
285.79 |
2.74 |
41.23 |
0.392 |
|
|
14 |
43.867 |
34.436 |
0.640 |
1800.97 |
6.41 |
134.65 |
550.83 |
3.54 |
57.44 |
3726.17 |
6.62 |
922.47 |
2.91 |
326.58 |
2.73 |
47.34 |
0.390 |
||||
|
16 |
49.739 |
39.045 |
0.639 |
2023.35 |
6.38 |
152.18 |
615.44 |
3.52 |
64.69 |
4258.86 |
6.70 |
1058.86 |
2.99 |
366.21 |
2.71 |
53.32 |
0.388 |
||||
|
18 |
55.526 |
43.588 |
0.639 |
2238.30 |
6.35 |
169.33 |
677.19 |
3.49 |
71.74 |
4792.00 |
6.78 |
1197.13 |
3.06 |
404.83 |
2.70 |
59.18 |
0.385 |
||||