尺  寸

特  性**

公称*尺寸

壁厚

每英尺重量

截面积

X-X轴

Y-Y轴

Ix

Sx

rx

Iy

Sy

ry

ln.

ln.

Lb.

ln.2

ln.4

ln.3

ln.

ln.4

ln.3

ln.

14×6

.5000

1/2

62.46

18.4

426

60.8

4.82

111

37.1

2.46

.3750

3/8

47.90

14.1

337

48.1

4.89

89.1

29.7

2.52

×3125

5/16

40.35

11.9

288

41.2

4.93

76.7

25.6

2.54

.2500

1/4

32.63

9.59

237

33.8

4.97

63.4

21.1

2.57

14×4

.5000

1/2

55.66

16.4

335

47.8

4.52

43.1

21.5

1.62

.3750

3/8

42.79

12.6

267

38.2

4.61

35.4

17.7

1.68

.3125

5/16

36.10

10.6

230

32.8

4.65

30.9

15.4

1.71

.2500

1/4

29.23

8.59

189

27.0

4.69

25.8

12.9

1.73

12×8

.6250

5/8

76.33

22.4

418

69.7

4.32

221

55.3

3.14

.5000

1/2

62.46

18.4

353

58.9

4.39

188

46.9

3.20

.3750

3/8

47.90

14.1

279

46.5

4.45

149

37.3

3.26

.3125

5/16

40.35

11.9

239

39.8

4.49

128

32.0

3.28

.2500

1/4

32.63

9.59

196

32.6

4.52

105

26.3

3.31

12×6

.5000

1/2

55.66

16.4

287

47.8

4.19

96.0

32.0

2.42

.3750

3/8

42.79

12.6

228

38.1

4.26

77.2

25.7

2.48

.3125

5/16

36.10

10.6

196

32.6

4.30

66.6

22.2

2.51

.2500

1/4

29.23

8.59

161

26.9

4.33

55.2

18.4

2.53

.1875

3/16

22.18

6.52

124

20.7

4.37

42.8

14.3

2.56

12×4

.5000

1/2

48.85

14.4

221

36.8

3.92

36.9

18.5

1.60

.3750

3/8

37.69

11.1

178

29.6

4.01

30.5

15.2

1.66

.3125

5/16

31.84

9.36

153

25.5

4.05

26.6

13.3

1.69

.2500

1/4

25.82

7.59

127

21.1

4.09

22.3

11.1

1.71

.1875

3/16

19.63

5.77

98.2

16.4

4.13

17.5

8.75

1.74

12×2

.2500

1/4

22.42

6.59

92.2

15.4

3.74

4.62

4.62

.837

.1875

3/16

17.08

5.02

72.0

12.0

3.79

3.76

3.76

.865