角钢号数

尺寸（毫米）

截面面积
（厘米2）

理论重量
（公斤/米）

表面积
（米2/米）

b

d

r

2

20

3
4

3.5

1.132
1.459

0.889
1.145

0.078
0.077

2.5

25

3
4

3.5

1.432
1.859

1.124
1.459

0.098
0.097

3.0

30

3
4

4.5

1.749
2.276

1.373
1.786

0.117
0.117

3.6

36

3
4
5

4.5

2.109
2.756
3.382

1.656
2.163
2.654

0.141
0.141
0.141

4.0

40

3
4
5

5

2.359
3.086
3.791

1.852
2.422
2.976

0.157
0.157
0.156

4.5

45

3
4
5
6

5

2.659
3.486
4.292
5.076

2.088
2.736
 .369
3.985

0.177
0.177
0.176
0.176

5.0

50

3
4

5.5

2.971
3.897

2.332
3.059

0.197
0.197

5.0

50

5
6

5.5

4.803
5.688

3.770
4.465

0.196
0.196

5.6

56

3
4
5
8

6.0

3.343
4.390
5.415
8.367

2.624
3.446
4.251
6.568

0.221
0.220
0.220
0.219

6.3

63

4
5
6
8
10

7

4.978
6.143
7.288
9.515
11.657

3.907
4.822
5.721
7.469
9.151

0.248
0.248
0.247
0.247
0.246

7

70

4
5
6
7
8

8

5.570
6.875
8.160
9.424
10.667

4.372
5.397
6.406
7.398
8.373

0.275
0.275
0.275
0.275
0.274

7.5

75

5
6
7
8
10

9

7.367
8.797
10.160
11.503
14.126

5.818
6.905
7.976
9.030
11.089

0.295
0.294
0.294
0.294
0.293

8

80

5
6
7
8
10

9

7.912
9.397
10.860
12.303
15.126

6.211
7.376
8.525
9.658
11.874

0.315
0.314
0.314
0.314
0.313

9

90

6
7
8
10
12

10

10.637
12.301
13.944
17.167
20.306

8.350
9.656
10.946
13.476
15.940

0.354
0.354
0.353
0.353
0.352

10

100

6
7
8
10

12

11.932
13.796
15.638
19.261

9.366
10.830
12.276
15.120

0.393
0.393
0.393
0.392

10

100

12
14
16

12

22.800
26.256
29.627

17.898
20.611
23.257

0.391
0.391
0.390

11

110

7
8
10
12
14

12

15.196
17.238
21.261
25.200
29.056

11.928
13.532
16.690
19.782
22.809

0.433
0.433
0.432
0.431
0.431

12.5

125

8
10
12
14

14

11.932
13.796
15.638
19.261

15.504
19.133
22.696
26.193

0.492
0.491
0.491
0.490

14

140

10
12
14
16

14

27.373
32.512
37.567
42.539

21.488
25.522
29.490
33.393

0.551
0.551
0.550
0.549

16

160

10
12
14
16

16

31.502
37.441
43.296
49.067

24.729
29.391
33.987
38.518

0.630
0.630
0.629
0.629

18

180

12
14
16
18

16

42.241
48.896
55.467
61.955

33.159
38.383
43.542
48.634

0.710
0.709
0.709
0.708

20

200

14
16
18
20
24

18

54.642
62.013
69.301
76.505
90.661

42.894
48.680
54.401
60.056
71.168

0.788
0.788
0.787
0.787
0.785

角钢号数

尺寸（毫米）

截面面积
（厘米2）

理论重量
（公斤/米）

表面积
（米2/米）

B

b

d

r

2.5/1.6

25

16

3
4

3.5

1.162
1.499

0.912
1.176

0.080
0.079

3.2/2

32

20

3
4

3.5

1.492
1.939

1.171
1.522

0.102
0.101

4/2.5

40

25

3
4

4

1.890
2.467

1.484
1.936

0.127
0.127

4.5/2.8

45

28

3
4

5

2.149
2.806

1.687
2.203

0.143
0.143

5/3.2

50

32

3
4

5.5

2.431
3.177

1.908
2.494

0.161
0.160

5.6/3.6

56

36

3
4
5

6

2.743
3.590
4.415

2.153
2.818
 3.466

0.181
0.180
0.180

6.3/4

63

40

4
5
6
7

7

4.058
4.993
5.908
6.802

3.185
3.920
4.638
5.339

0.202
0.202
0.201
0.201

7/4.5

70

45

4
5
6
7

7.5

4.547
5.609
6.647
7.657

3.570
4.403
5.218
6.011

0.226
0.225
0.225
0.225

7.5/5

75

50

5
6
8
10

8

6.125
7.260
9.467
11.590

4.808
5.699
7.431
9.098

0.245
0.245
0.244
0.244

8/5

80

50

5
6
7
8

8

6.375
7.560
8.724
9.867

5.005
5.935
6.848
7.745

0.255
0.255
0.255
0.254

5.6/3.6

56

36

3
4
5

6

2.743
3.590
4.415

2.153
2.818
 3.466

0.181
0.180
0.180

6.3/4

63

40

4
5
6
7

7

4.058
4.993
5.908
6.802

3.185
3.920
4.638
5.339

0.202
0.202
0.201
0.201

7/4.5

70

45

4
5
6
7

7.5

4.547
5.609
6.647
7.657

3.570
4.403
5.218
6.011

0.226
0.225
0.225
0.225

7.5/5

75

50

5
6
8
10

8

6.125
7.260
9.467
11.590

4.808
5.699
7.431
9.098

0.245
0.245
0.244
0.244

8/5

80

50

5
6
7
8

8

6.375
7.560
8.724
9.867

5.005
5.935
6.848
7.745

0.255
0.255
0.255
0.254