Element

C

Mn

P

S

Si

Cr

Ni

Mo

Weight %

0.36-

0.44

0.50-

0.80

0.015 (max)

0.025 (max)

0.17-

0.37

0.60-

0.90

1.25-

1.75

0.15-

0.25

Mechanical Properties

Tensile Strength (Mpa)

Yield Strength (Mpa)

Elongation (%)

Reduction in Area φ/%

Impact Strength (J)(Izod)

Sample after T+Q Brinell hardness

HB

Not less than

1080

930

12

50

65

321-375

840

6

30

31

-

980

835

12

55

78

293-341

750

6

33

39

-