Chemical Composition(%)

C

Si

Mn

P

S

Nb

Cr

Mo

Ni

Cu

Cep

0.15

0.23

0.68

0.26

0.27

Max0.020

0.020

0.020

0.020

0.020

0.26

Physical properties

Yield Strength(Mpa)

Tensile Strength(Mpa)

Percebtage Elongation

320

475

33%

Specifications

 Nominal Dimmenision/mm

Section Area

b

h

t

rl

r

Theoretical Weight

(KG/M)

80x5

80

5

19

4

≤1.5

5.41

4.25

80x6

80

6

20

4

≤2

6.21

4.88

100x7

100

7

22.5

4.5

≤2

8.71

6.86

100x8

100

8

23.5

4.5

9.74

7.65

120x6

120

6

23

5

≤2

9.32

7.32

120x7

120

7

24

5

10.52

8.26

120x8

120

8

25

5

11.72

9.2

140x7

140

7

26

5.5

≤2

12.43

9.75

140x8

140

B

27

5.5

≤2

13.83

10.85

140x10

140

10

29

5.5

≤3

16.63

13.05

160x7

160

7

29

6

≤2

14.6

11.46

160x8

160

8

30

6

≤2

16.2

12.72

160x9

160

9

31

6

≤2

17.8

13.97

160x11

160

11

33

6

≤3

21

16.49

180x8

180

8

33

7

≤2

18.86

14.8

180x9

180

9

34

7

≤2

20.66

16.22

180xl0

180

10

35

7

≤2

22.15

17.63

180x11

180

11

36

7

≤3

24.26

19.04

200x9

200

9

37

B

≤2

23.66

18.57

200xl0

200

10

38

8

≤3

25.66

20.14

200x11

200

11

39

8

≤3

27.66

21.71

200x12

200

12

40

8

≤3

29.66

23.28

220x10

220

10

41

9

≤3

29.00

22.77

220x11

220

11

42

9

≤3

31.20

24.50

220x12

220

12

43

9

≤3

33.4

26.22

320x12

320

12

58

14

≤3

54.25

42.60

320x13

320

13

59

14

≤3

57.25

45.09

320x14

320

14

60

14

≤4

60.85

47.60