BS970 #5

Grade

C

Mn

Si

Cr

Ni

Mo

S

P 

Others

46

0.35/0.45

0.70/1.00

1.50/2.00

0.05

0.05

48

0.45/0.55

0.50/0.80

0.10/0.50

1.00/1.40

0.05

0.05

48A

0.50/0.60

0.60/0.90

1.35/1.65

0.55/0.85

0.05

0.05

49A

0.40/0.85

1.00 M

0.30 M

0.05

0.05

49B

0.45/0.85

1.00 M

0.30 M

0.05

0.05

49C

0.55/0.85

0.75 M

0.30 M

0.04

0.04

49D

0.65/0.85

0.75 M

0.30 M

0.04

0.04

50

0.40/0.50

0.50/0.70

0.10/0.35

1.00/1.50

0.04

0.04

51

0.25/0.35

0.35/0.75

0.10/0.35

0.30 M

2.75/3.25

0.05

0.05

52

0.40/0.50

0.30/0.60

3.00/3.75

7.50/9.50

0.50 M

0.04

0.04

53

0.55/0.65

0.30/0.60

1.40/1.70

5.75/6.75

0.50 M

0.05

0.05

54

0.35/0.50

1.50 M

1.00/2.509

12.0/16.0

10.0 M

0.04

0.04

54A

0.37/0.47

0.50/0.80

1.00/2.00

13.0/15.0

13.0/15.0

0.40/0.60

0.04

0.04

55

0.18/0.45

1.00 MAX

1.00/2.50

17.0 Min

6.0/12.0

0.04

0.04

56A

0.12 M

1.00M

1.00 M

12.0/14.0

1.00 M

0.04

0.04

56B

0.12/0.18

1.00 M

1.00 M

12.0/14.0

1.00 M

0.04

0.04

56C

0.18/0.25

1.00 M

1.00 M

12.0/14.0

1.00 M

0.04

0.04

56D

0.25/0.35

1.00 M

1.00 M

12.0/14.0

1.00 M

0.04

0.04

56AM

0.12 M

1.50 M

1.00 M

12.0/14.0

1.00 M

0.75

0.04

56BM

0.12/0.18

1.50 M

1.00 M

12.0/14.0

1.00 M

0.75

0.04

56CM

0.18/0.25

1.50 M

1.00 M

12.0/14.0

1.00 M

0.75

0.04

56DM

0.25/0.35

1.50 M

1.00 M

12.0/14.0

1.00 M

0.75

0.04