Menu My space
Global Automotive & Mobility Solutions
Choose product sheet language

iCARe® 420 Save

Description

Properties

The iCARe® 420 Save products are low loss electrical steel grades with a guaranteed yield strength of 420 MPa. Compared to the standard iCARe® Save grades, these iCARe® 420 Save grades have a higher yield strength. The iCARe® 420 Save product family combines improved mechanical properties with low core losses, which are specified as guaranteed losses at 400 Hz and indicative maximum values at 700 Hz, both at 1 T. These values are representative of the steel’s core loss behaviour at high frequencies.

Advantages

The improved and guaranteed yield strength (420 MPa) of the iCARe® 420 Save products allows for rotor design improvements of for instance interior permanent magnet synchronous machines. Combined with the low core losses which are particularly useful in the stator, such mechanical rotor design improvements increase the overall performance of the electrical machine.

Applications

iCARe® 420 Save grades have an improved combination of mechanical properties, core losses and magnetic polarisation, and are most effective at reducing iron losses from machine parts which are subject tohigh base frequencies, additional space and time harmonics. The valorisation of the improved mechanical properties of the iCARe® 420 Save grades can be found in those electrical machine topologies where its higher yield strength can be exploited by optimising the mechanical design and/or increasing the machine’s rotating speed, thus enhancing the power density.

In general, Save grades help to improve machine efficiency, especially in the high speed region of the operational torque-versus-speed map. Save grades are particularly useful for reducing iron losses in high-speed hybrid and electric traction machines:the driving range is extended as Save grades save battery energy. Also, having lower core losses implies leaner cooling strategies and thermal management of the electrical machines.

Magnetic properties

Show all
ArcelorMittal name Conventional density (kg/dm3) Max. loss (W/kg) at 400 Hz at 1T [Guaranteed] Max. loss (W/kg) at 700 Hz at 1T [Indicative] 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] Max. anisotropy of loss (±%) at 400 Hz at 1T [Guaranteed] Min. number of bends [Guaranteed] Min. stacking factor [Guaranteed]
420 Save 20-13 7.6 13 29 1.49 1.60 1.70 15 5 0.93
420 Save 25-14* 7.60 14 34 1.49 1.60 1.70 15 5 0.94
420 Save 27-15 7.60 15 37 1.49 1.60 1.70 15 5 0.94
420 Save 30-16 7.60 16 41 1.49 1.60 1.70 15 5 0.95

* On request

Remark: better guaranteed magnetic properties are available on request.

Mechanical properties

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

Show all
ArcelorMittal name Direction Re (MPa) [Guaranteed] Re (MPa) Rm (MPa) Re/Rm A80 (%) HV
420 Save 20-13 L > 420 430 - 470 550 - 600 0.77 - 0.81 10 - 20 200 - 230
T > 420 445 - 485 565 - 615 0.77 - 0.81 10 - 20 200 - 230
420 Save 25-14* L > 420 430 - 470 550 - 600 0.77 - 0.81 10 - 20 200 - 230
T > 420 445 - 485 565 - 615 0.77 - 0.81 10 - 20 200 - 230
420 Save 27-15 L > 420 430 - 470 550 - 600 0.77 - 0.81 12 - 25 200 - 230
T > 420 445 - 485 565 - 615 0.77 - 0.81 12 - 25 200 - 230
420 Save 30-16 L > 420 430 - 470 550 - 600 0.77 - 0.81 12 - 25 200 - 230
T > 420 445 - 485 565 - 615 0.77 - 0.81 12 - 25 200 - 230

* On request

Recommendations

Save grades can be used immediately after lamination punching. The punching effect can be eliminated by performing a stress-relief annealing. This optimises their performance inapplications with fine teeth, and enables a substantial part of the lower frequency area to beexploited. A C5-type coating is recommended.
Save stacks can be produced using existing assembly techniques such as interlocking or welding.

You may also be interested in

Explore our best-in class steel solutions

Search our products

By strength

0MPa 2000MPa
0MPa 2000MPa

By product reference




Results


Tailor your ArcelorMittal Automotive web experience

I am ...

I am especially interested in information about automotive steel for…

My ArcelorMittal Automotive space

This is your personal space on ArcelorMittal's global automotive website. You can keep your favorite ArcelorMittal automotive web pages and documents in a safe place

My space

Configure this website

If you want, you can tailor your web experience on this automotive website to your personal needs. By selecting your job profile and/or region (both optional) you enable us to personalize the content you see on this website.
No matter which job profile or region you select, you will always have unlimited access to all the information on this website. The only thing that changes is that you will be offered more tailored content. As well as your profile and region, we also use your browsing history on this website to remember your personal preferences and identify the most appropriate content for you.
We are confident that this will help you to find the inspiration you are looking for on the ArcelorMittal automotive website.