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iCARe® Speed

Properties

The iCARe® Speed product family comes with guaranted losses at 400Hz and indicative maximum values at 700Hz. These values are representative of the steel’s behaviour at high frequencies.

Advantages

The Speed grades provide an excellent compromise between mechanical properties and losses.

Applications

Speed has been developed for very high speed rotors. This enables manufacturers to make more compact machines for a given mechanical output.

Recommendations for use

Speed grades can be used immediately after lamination punching. The effect of punching can be eliminated if a stress relief annealing is applied. This optimises the performance of the Speed grades in applications with fine teeth. It can also provide substantial performance improvements in the lower frequency range. To achieve these effects, a C5 type coating is advised.

Speed stacks can be produced using any existing assembly technique such as interlocking or welding.

Magnetic properties

  Conventional density (kg/dm3)    Max loss (W/kg)Min polarisation (T)         Max anisotropy of loss (±%) at 400 Hz at 1T    Min number of bends  Min stacking factor   
At 400 Hz at 1T At 700 Hz at 1TAt 2,500 A/mAt 5,000 A/mAt 10,000 A/m

 

 

Guaranteed

Indicative

Guaranteed

Guaranteed

Indicative

Guaranteed

Guaranteed

Guaranteed

Speed 35-440

7.60

23

60 

1.51

1.62 

1.72 

15

5

0.95

Speed 35-510

7.60

28

65

1.51

1.62

1.72

15

5

0.95


Mechanical properties

The minimal values for Re and Rm data are guaranteed in the rolling direction. The other values in the following table are provided for information purposes only.

 

 

Direction

Re (MPa)

Rm (MPa)

Re/Rm

A80 (%)

HV

Speed 35-440

L

440 - 490

570 - 620

0.76 - 0.88

20 - 30

210 - 240

Speed 35-440

T

465 - 515

590 - 640

0.76 - 0.88

20 - 30

210 - 240

Speed 35-510 

L

510 - 560

605 - 655

0.80 - 0.92

20 - 30

210 - 240

Speed 35-510

T

540 - 590

625 - 675

0.80 - 0.92

20 - 30

210 - 240


Further information

For more information about ArcelorMittal’s iCARe® range of electrical steels and the support we can provide, please visit: http://automotive.arcelormittal.com/automotive/icare.

For information about the packaging of our materials, click here

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