Case hardening entails the treatment of a finished component in a carburizing atmosphere at a high temperature, typically 850–950°C, which increases the carbon content at the surface of the component. The carburized layer is typically 0,5–1,0 mm deep but can be deeper. Following carburization, the part is quenched and thereby hardened. During quenching the carburized layer is transformed to martensite with hardness determined by the carbon content. The result is thus a component with a hard surface and a comparably soft core. Typical components made out of carburizing steel, are gears in transmissions.

 

Ovako standard

EN-standard*

Typical analysis
   

C

Si

Mn

Cr

Mo

Ni

Other

C15E

C15E

0.2

0.2

0.5

 

 

 

 

CN 110 M

16NiCrS4

0.2

0.2

0.6

0.8

 

1.0

 

MC 110 M

16MnCr5

0.2

0.2

1.2

1.0

 

 

 

MC 110 M

20MnCr5

0.2

0.2

1.3

1.2

 

 

 

MoCN 216

18CrNiMo7-6

0.2

0.2

0.7

1.7

0.3

1.6

 

MoCN206M

20NiCrMo2-2

0.2

0.3

0.9

0.6

0.2

0.5

 

Ovako 124

20MoCr4

0.2

0.2

0.8

0.5

0.4

 

 

Ovako 146

16NiCrMo7

0.2

0.1

1.0

1.1

0.1

0.8

 

Ovako 152

20NiCrMo2-2

0.2

0.3

0.9

0.6

0.2

0.5

 

Ovako 157

20NiCrMo7

0.2

0.2

0.6

0.5

0.2

1.7

 

Ovako 158

20NiMo9-7F

0.2

0.1

0.3

0.4

0.7

2.3

 

Ovako 159

18CrNiMo7-6

0.2

0.2

0.7

1.7

0.3

1.6

 

Ovako 225

18CrMo8-5F

0.2

0.3

0.8

1.8

0.5

 

 

Ovako 234

16MnCr5

0.2

0.2

1.2

1.0

 

 

 

Ovako 245

12NiCr14-6F

0.1

0.3

0.5

1.5

0.1

3.3

 

Ovako 253

14NiCrMo13-4

0.2

0.2

0.6

1.2

0.2

2.9

 

Ovako 255

18NiCrMo14-6

0.2

0.3

0.5

1.4

0.2

3.3

 

Ovako 256

24NiCrMo15-5F

0.2

0.3

0.7

1.2

0.3

3.6

 

Ovako 277

16CrMnNiMo9-5-2F

0.2

0.2

1.3

2.1

0.5

0.5

V

Ovako 499

30MoCrV20-7F

0.3

0.2

0.3

1.7

1.8

 

V

This is a selection of our standard program. The steel grades above can all be made as BQ-Steel, IQ-Steel or M-Steel.

  • Designation followed by “F” is not an official EN standard grade but named according to the rules in EN 10027.

 

 

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