Properties

Semi-processed standard grades have guaranteed magnetic properties in accordance with EN 10341:2006 (which superseded EN 10126:1995 for non-alloyed grades and EN 10165:1995 for alloyed grades). The magnetic properties are developed during the final annealing cycle, which is performed by the client after punching the laminations. This annealing treatment reduces losses and improves permeability and polarisation, as a result of recrystallisation, grain growth and also - for certain grades - decarburisation.

Advantages

The punchability of the semi-processed grades has been optimised by the application of an optimised final skin-pass reduction, after the cold rolling and annealing process. Skin-passing produces a controlled surface roughness, ensuring good material behaviour in the punching presses. This roughness also prevents the strips from sticking during the client’s final annealing treatment. Regarding magnetic performance, skin-passing also plays an important role by stimulating grain growth during the annealing cycle, which results in further reduction of losses and increased permeability of the steel.

Applications

Non-alloyed semi-processed electrical steels are designed for small industrial motors, fans and domestic appliances such as washing machine motors, microwave oven transformers and refrigerator compressors.

Alloyed semi-processed electrical steels are designed for similar higher efficiency versions of these applications, as they have lower losses whilst the permeability remains at a good level.

Recommendations for use

The punching process needs to be carried out with an appropriate lubricant, which must be selected carefully, especially in the case of the alloyed semi-processed grades.

Brand correspondence

 
Thickness 0.50 mm
 EN 10341:2006EN 10126:1995EN 10165:1995IEC/CEI 60404-8-3:2005
M 340-50 K M 340-50 K M 340-50 EM 340-50 K5
M 390-50 K M 390-50 K M 390-50 EM 390-50 K5
M 450-50 K M 450-50 K M 450-50 EM 450-50 K5
M 560-50 K M 560-50 K M 560-50 EM 560-50 K5
M 660-50 K M 660-50 KM 660-50 D M 660-50 K5
M 890-50 K M 890-50 KM 890-50 D M 890-50 K5
M 1050-50 K M 1050-50 KM 1050-50 D M 1050-50 K5
 
Thickness 0.65 mm
 EN 10341:2006EN 10126:1995EN 10165:1995IEC/CEI 60404-8-3:2005
M 390-65 K M 390-65 K M 390-65 EM 390-65 K5
M 450-65 K M 450-65 K M 450-65 EM 450-65 K5
M 520-65 K M 520-65 K M 520-65 EM 520-65 K5
M 630-65 K M 630-65 K M 630-50 EM 630-65 K5
M 800-65 K M 800-65 KM 800-65 D M 800-65 K5
M 1000-65 K M 1000-65 KM 1000-65 D M 1000-65 K5
M 1200-65 K M 1200-65 KM 1200-65 D M 1200-65 K5
 
Thickness 0.70 mm
 EN 10341:2006EN 10126:1995EN 10165:1995IEC/CEI 60404-8-3:2005
M 1000-70 K AM FCE     
Grades in italics: not included in the standard
 
Thickness 0.80 mm
 EN 10341:2006EN 10126:1995EN 10165:1995IEC/CEI 60404-8-3:2005
M 1200-80 K AM FCE     
Grades in italics: not included in the standard
 
Thickness 1.00 mm
 EN 10341:2006EN 10126:1995EN 10165:1995IEC/CEI 60404-8-3:2005
M 1300-100 K AM FCE     
M 1800-100 K AM FCE     
Grades in italics: not included in the standard

Dimensions

Please contact us for thicknesses < 0.50 mm.

 

      
Thickness 0.50 mm 
 NotesSide trimmedSlit coils
Min widthMax widthMin widthMax width
M 340-50 K1600130040600
M 390-50 K 
M 450-50 K 1350
M 560-50 K 
M 660-50 K 1400
M 890-50 K 
M 1050-50 K 
      
Thickness 0.65 mm 
 NotesSide trimmedSlit coils
Min widthMax widthMin widthMax width
M 390-65 K1600130040600
M 450-65 K 
M 520-65 K 1350
M 630-65 K 
M 800-65 K 1400
M 1000-65 K 
M 1200-65 K 
      
Thickness 0.70 mm 
 NotesSide trimmedSlit coils
Min widthMax widthMin widthMax width
M 1000-70 K AM FCE 600140040600
      
Thickness 0.80 mm 
 NotesSide trimmedSlit coils
Min widthMax widthMin widthMax width
M 1200-80 K AM FCE 600140040600
      
Thickness 1.00 mm 
 NotesSide trimmedSlit coils
Min widthMax widthMin widthMax width
M 1300-100 K AM FCE 600140040600
M 1800-100 K AM FCE 
1. After prior agreement
Grades in italics: not included in the standard

 

Magnetic properties

 
Thickness 0.50 mm
 
Conventional density (kg/dm³)
Max loss (W/kg) at 50 Hz at 1 T
Max loss (W/kg) at 50 Hz at 1.5 T
Max loss (W/kg) at 60 Hz at 1.5 T
Min polarisation (T) at 2500 A/m
Min polarisation (T) at 5000 A/m
Min polarisation (T) at 10,000 A/m
 IndicativeGuaranteedIndicativeGuaranteedGuaranteedGuaranteed
M 340-50 K 7.65 1.42 3.40 4.32 1.54 1.62 1.72
M 390-50 K 7.70 1.62 3.90 4.97 1.56 1.64 1.74
M 450-50 K 7.75 1.92 4.50 5.67 1.57 1.65 1.75
M 560-50 K 7.80 2.42 5.60 7.03 1.58 1.66 1.76
M 660-50 K 7.85 2.80 6.60 8.38 1.62 1.70 1.79
M 890-50 K 3.70 8.90 11.30 1.60 1.68 1.78
M 1050-50 K 4.30 10.50 13.34 1.57 1.65 1.77
Multiply the values in W/kg by 0.4536 to obtain the values in W/lb.
 
Thickness 0.65 mm
 
Conventional density (kg/dm³)
Max loss (W/kg) at 50 Hz at 1 T
Max loss (W/kg) at 50 Hz at 1.5 T
Max loss (W/kg) at 60 Hz at 1.5 T
Min polarisation (T) at 2500 A/m
Min polarisation (T) at 5000 A/m
Min polarisation (T) at 10,000 A/m
 IndicativeGuaranteedIndicativeGuaranteedGuaranteedGuaranteed
M 390-65 K 7.65 1.62 3.90 5.07 1.54 1.62 1.72
M 450-65 K 7.70 1.92 4.50 5.86 1.56 1.64 1.74
M 520-65 K 7.75 2.22 5.20 6.72 1.57 1.65 1.75
M 630-65 K 7.80 2.72 6.30 8.00 1.58 1.66 1.76
M 800-65 K 7.85 3.30 8.00 10.16 1.62 1.70 1.79
M 1000-65 K 4.20 10.00 12.70 1.60 1.68 1.78
M 1200-65 K 5.00 12.00 15.24 1.57 1.65 1.77
Multiply the values in W/kg by 0.4536 to obtain the values in W/lb.
 
Thickness 0.70 mm
 
Conventional density (kg/dm³)
Max loss (W/kg) at 50 Hz at 1 T
Max loss (W/kg) at 50 Hz at 1.5 T
Max loss (W/kg) at 60 Hz at 1.5 T
Min polarisation (T) at 2500 A/m
Min polarisation (T) at 5000 A/m
Min polarisation (T) at 10,000 A/m
 IndicativeGuaranteedIndicativeGuaranteedGuaranteedGuaranteed
M 1000-70 K AM FCE 7.85 4.20 10.00   1.60 1.70 1.80
Grades in italics: not included in the standard
Multiply the values in W/kg by 0.4536 to obtain the values in W/lb.
 
Thickness 0.80 mm
 
Conventional density (kg/dm³)
Max loss (W/kg) at 50 Hz at 1 T
Max loss (W/kg) at 50 Hz at 1.5 T
Max loss (W/kg) at 60 Hz at 1.5 T
Min polarisation (T) at 2500 A/m
Min polarisation (T) at 5000 A/m
Min polarisation (T) at 10,000 A/m
 IndicativeGuaranteedIndicativeGuaranteedGuaranteedGuaranteed
M 1200-80 K AM FCE 7.85 5.00 12.00   1.60 1.70 1.80
Grades in italics: not included in the standard
Multiply the values in W/kg by 0.4536 to obtain the values in W/lb.
 
Thickness 1.00 mm
 
Conventional density (kg/dm³)
Max loss (W/kg) at 50 Hz at 1 T
Max loss (W/kg) at 50 Hz at 1.5 T
Max loss (W/kg) at 60 Hz at 1.5 T
Min polarisation (T) at 2500 A/m
Min polarisation (T) at 5000 A/m
Min polarisation (T) at 10,000 A/m
 IndicativeGuaranteedIndicativeGuaranteedGuaranteedGuaranteed
M 1300-100 K AM FCE 7.85 5.40 13.00   1.60 1.70 1.80
M 1800-100 K AM FCE 6.00 18.00
Grades in italics: not included in the standard
Multiply the values in W/kg by 0.4536 to obtain the values in W/lb.


Mechanical properties

The mechanical properties are for information purposes only.


Thickness 0.50 mm
 
Direction
Re (MPa)
Rm (MPa)
HV
A80 (%)
M 340-50 KT400 - 450450 - 550150 - 2107 - 23
M 390-50 KT390 - 485445 - 515150 - 2107 - 26
M 450-50 KT355 - 435405 - 475135 - 19010 - 29
M 560-50 KT380 - 440435 - 495130 - 18510 - 29
M 660-50 KT350 - 450380 - 470125 - 17013 - 30
M 890-50 KT285 - 450350 - 470120 - 17016 - 35
M 1050-50 KT240 - 450295 - 470105 - 17021 - 39
Thickness 0.65 mm
 
Direction
Re (MPa)
Rm (MPa)
HV
A80 (%)
M 390-65 KT505 - 565560 - 610185 - 23510 - 21
M 450-65 KT435 - 465470 - 510180 - 21018 - 24
M 520-65 KT370 - 440420 - 480150 - 19012 - 26
M 630-65 KT370 - 440420 - 480150 - 19012 - 31
M 800-65 KT360 - 450380 - 470130 - 17512 - 31
M 1000-65 KT280 - 450350 - 470120 - 17017 - 37
M 1200-65 KT270 - 450320 - 470100 - 17019 - 39
Thickness 0.70 mm
 
Direction
Re (MPa)
Rm (MPa)
HV
A80 (%)
M 1000-70 K AM FCET300 - 340360 - 400120 - 14028 - 35
Grades in italics: not included in the standard
Thickness 0.80 mm
 
Direction
Re (MPa)
Rm (MPa)
HV
A80 (%)
M 1200-80 K AM FCET320 - 375360 - 400125 - 15520 - 30
Grades in italics: not included in the standard
Thickness 1.00 mm
 
Direction
Re (MPa)
Rm (MPa)
HV
A80 (%)
M 1300-100 K AM FCET370 - 400390 - 430140 - 17021 - 27
M 1800-100 K AM FCET255 - 305290 - 335105 - 14029 - 43
Grades in italics: not included in the standard


Coating properties

These semi-processed grades are available non-insulated. The final process step in the decarburising annealing treatment carried out by the client provides a suitable atmosphere and thermal conditions for blueing: the formation of an oxide film, which creates the required surface insulation layer.


 


For commercial information (quotations, deliveries, product availability):

For technical questions about these products: flateurope.technical.assistance@arcelormittal.com


All details provided in the ArcelorMittal Flat Carbon Europe S.A. catalogue are for information purposes only. ArcelorMittal Flat Carbon Europe S.A. reserves the right to change its product range at any time without prior notice.