model

Mechanical behavior

Tensile strength (MPa)

Yield strength (MPa)

Elongation (%)

Impact energy( J)

Hardness( HBS)

45

≥600

≥355

≥16

≥39

≤197

27SiMn

≥980

≥835

≥12

≥39

≤217

model

Chemical Composition %

C

Si

Mn

P

S

Ni

Cr

Cu

Mo

other

45

0.42-0.50

0.17-0.37

0.50-0.80

≤0.35

≤0.35

≤0.25

≤0.25

≤0.20

-

-

27SiMn

0.24-0.32

1.10-1.40

1.10-1.40

≤0.35

≤0.35

≤0.25

≤0.25

≤0.20

≤0.15

-