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iCARe® Speed
Description
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.
Magnetic properties
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| ArcelorMittal name | Conventional density (kg/dm3) | Max. loss (W/kg) at 400 Hz at 1T [Guaranteed] | Max. loss (W/kg) at 1000 Hz at 1T [Guaranteed] | Max. loss (W/kg) at 50 Hz at 1.5T [Guaranteed] | Max. loss (W/kg) at 400 Hz at 1.5T [Guaranteed] | Min. polarisation (T) at 2,500 A/m [Guaranteed] | Min. polarisation (T) at 5,000 A/m [Guaranteed] | Min. polarisation (T) at 10,000 A/m [Indicative] |
| Speed 35-500* | 7.6 | 28 | 100 | 5 | 63 | 1.52 | 1.62 | 1.73 |
* On request
Remark: better guaranteed magnetic properties are available on request.
Mechanical properties
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| ArcelorMittal name | Min. yield strength Rp0.2 (MPa) at 20°C [Guaranteed] | Min. tensile strength Rm (MPa) at 20°C [Guaranteed] | Min. elongation at break (%) at 20°C [Guaranteed] |
| Speed 35-500* | 500 | 600 | 12 |
* On request
Recommendations
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.
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