Spring steel is a name given to a wide range of steels used in the manufacture of springs, prominently in automotive and industrial suspension applications. These steels are generally low-alloy manganese, medium-carbon steel or high-carbon steel with a very high yield strength. This allows objects made of spring steel to return to their original shape despite significant deflection or twisting. For springs that are exposed to fatigue loads, high demands are placed on surface finish and inner cleanness (limitation of amount of non-metallic inclusions).

 Ovako standard

EN-standard*

Typical analysis

 

 

C

Si

Mn

Cr

Mo

Ni

Other

52CrMoV4

52CrMoV4

0.5

0.2

0.9

1.1

0.2

 

V

55Cr3

55Cr3

0.6

0.2

0.9

0.9

 

 

 

56Si7

56Si7

0.6

1.8

0.8

 

 

 

 

56SiCr7

56SiCr7

0.6

1.8

0.9

0.3

 

 

 

Imatra MC 608

60Cr3

0.6

0.2

0.9

0.8

 

 

 

MS416

38Si7

0.4

1.6

0.7

 

 

 

 

Ovako 593

51CrV4

0.5

0.3

0.9

1.1

 

 

V

SB33S17B

33SiMnB7-3F

0.3

1.7

0.9

 

 

 

B

VC 510

51CrV4

0.5

0.2

0.9

1.1

 

 

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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