Ovako has a history of pioneering the use of boron steel and over time has innovated its use and the wide range of variants we can provide today. Boron is a small interstitial element which is added to improve hardenability. It most effective in lower and medium carbon steels with < 0.40% C. Boron increases the strength of heat-treated steels in the quenched and tempered condition. Boron steel grades can be hot worked and direct quenched to achieve a high strength component. It is often a very cost-effective solution. Boron steels are often used in applications subjected to wear.

Ovako
standard

EN-standard*

Typical analysis

 

 

C

Si

Mn

Cr

Mo

Ni

Other

BCM 311

27MnCrB5-2

0.3

0.2

1.3

0.5

 

 

B

BCM 414

39MnCrB6-4

0.4

0.3

1.5

0.5

 

 

B

BM 212

20MnB5

0.2

0.2

1.3

 

 

 

B

BM 312

30MnB5

0.3

0.2

1.3

 

 

 

B

SB23M12B

20MnB5

0.2

0.2

1.3

 

 

 

B

SB24M13B

24MnB5F

0.2

0.3

1.3

0.2

 

 

B

SB27M12CB

27MnCrB5-2

0.3

0.2

1.3

0.5

 

 

B

SB30M12CB

30MnCrB5-2F

0.3

0.3

1.3

0.5

 

 

B

SB33M13B

30MnB5

0.3

0.2

1.3

 

 

 

B

SB33M13CB

33MnCrB5-2

0.3

0.3

1.3

0.6

 

 

B

SB43M14B

43MnB6-3F

0.4

0.3

1.4

 

 

 

B

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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