C

Si

Mn

P

S

Cr

Mo

Cu

Fe

0.22-0.29

<0.35

0.5-0.8

<0.025

<0,02

0.9-1.2

0.15-0.30

<0,3

Other

+QT

Yield strength, min, ReH , MPa

440

Tensile strength (tensile strength), min., Rm, MPa

560-740

Relative elongation, min., %

Longitudinal patterns

18

Cross patterns

16

KV impact work at 20°C, min., J

Longitudinal swatches

60

Cross swatches

40

Impact work KV at -20°C, min., J

Longitudinal swatches

50

Cross Patterns

35

Impact work KV at -40°С -40°F ], min., J

Longitudinal swatches

45

Cross patterns

30

Impact work KV at -50°С -60°F ], min., J

Longitudinal samples

40

Cross patterns

27

Impact work KV at -60°С -75°F ], min., J

Longitudinal patterns

40

Cross Patterns

27