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iCARe® Torque

Properties

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

Advantages

Torque grades assist flux generation, allowing the motor to develop more mechanical output. If mechanical output is not an issue, permanent magnet or copper winding can be reduced to save on costs.

Applications

Torque grades are suitable for machines which need high torque at low speeds. They provide the fast acceleration required by hybrid and electric vehicles.

Recommendations for use

Torque 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 Torque 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.

Torque stacks can be produced using existing assembly techniques 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
  GuaranteedIndicativeGuaranteedGuaranteedIndicativeGuaranteedGuaranteedGuaranteed
Torque 20-15*7.6515341.551.651.761550.93
Torque 25-167.6516371.551.651.761550.94
Torque 27-167.6516381.551.651.761550.94
Torque 30-177.6517401.551.651.761550.95
Torque 30-187.6518411.551.651.761550.95
Torque 35-207.6520501.551.651.761550.95

* On request

Mechanical properties

The data in the following table is provided for information purposes only.

 DirectionRe (MPa)Rm (MPa)Re/RmA80 (%)HV
Torque 20-15* L340 - 380470 - 5100.71 - 0.7613 - 28170 - 200
T360 - 400490 - 5300.71 - 0.7613 - 28170 - 200
Torque 25-16 L340 - 380470 - 5100.71 - 0.7613 - 28170 - 200
T360 - 400490 - 5300.71 - 0.7613 - 28170 - 200
Torque 27-16 L340 - 380470 - 5100.71 - 0.7613 - 28170 - 200
T360 - 400490 - 5300.71 - 0.7613 - 28170 - 200
Torque 30-17 L340 - 380470 - 5100.71 - 0.7613 - 28170 - 200
T360 - 400490 - 5300.71 - 0.7613 - 28170 - 200
Torque 30-18 L340 - 380470 - 5100.71 - 0.7613 - 28170 - 200
T360 - 400490 - 5300.71 - 0.7613 - 28170 - 200
Torque 35-20L340 - 380470 - 5100.71 - 0.7613 - 28170 - 200
T360 - 400490 - 5300.71 - 0.7613 - 28170 - 200

* On request

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, please click here.

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