HP and CDW-PERM® grades: unparalleled magnetizability

Highly-permeable electrical steel strip grades for improved efficiency

Waelzholz HP and CDW-PERM® grades are electrical steel strip grades with a special high magnetic permeability. We also produce significantly higher polarization at the same energy input with our HP and CDW-PERM® grades in comparison with standard grades. The result is excellent magnetizability in both grade variations as well as a significant increase in thermal conductivity in the CDW-PERM® variation.

Optimal polarization and thermal conductivity for electrical drives

These highly-permeable electrical steel strip grades are ideal for high-performance electrical drives. Due to their high permeability values they enable higher engine torque.To top it all off, our CDW-PERM® grades have excellent thermal conductivity, which ensures that heat built up during motor operation can easily escape.

Higher polarization at the same energy input

The higher polarization of our CDW-PERM® and HP grades in comparison with standard grades provides our customers with unparalleled magnetizability and a high degree of efficiency and effectiveness.

CDW-PERM® grades: the impact of alloy content

In comparison with standard grades, our CDW-PERM® grades have significantly better polarization and thermal conductivity.

Magnetic properties of HP material

Denomination Min. magnetic
polarization at
2,500 [A/m]
Typ. magnetic
polarization at
2,500 [A/m]
Typ. yield strength Typ. tensile strength Typ. elongation Typ. hardness Thermal conductivity
DIN EN 10106:2007 [T] Waelzholz [T] [ksi] [ksi] A80 [%] HV5 [W/mK]
Nominal thickness: 0.50 mm
M 350-50 A HP
M 400-50 A HP
M 470-50 A HP
M 530-50 A HP
M 600-50 A HP
M 700-50 A HP
M 800-50 A HP
M 940-50 A HP
1.50
1.53
1.54
1.56
1.57
1.60
1.60
1.62
1.56
1.58
1.59
1.61
1.62
1.65
1.65
1.67
340
340
300
300
295
295
290
290
470
470
430
430
425
425
410
410
29
29
30
30
31
31
33
33
160
160
135
135
130
130
120
120
24.5
24.5
30.3
30.3
33.6
33.6
42.4
42.4
Nominal thickness: 0.65 mm
M 400-65 A HP
M 470-65 A HP
M 530-65 A HP
M 600-65 A HP
M 700-65 A HP
M 800-65 A HP
M 1000-65 A HP
1.52
1.53
1.54
1.56
1.57
1.60
1.61
1.57
1.58
1.59
1.61
1.62
1.66
1.66
335
340
340
300
300
290
290
460
470
470
430
425
410
410
30
30
30
32
32
34
34
165
165
165
140
130
120
120
24.5
24.5
24.5
30.3
33.6
42.4
42.4
Nominal thickness: 1.00 mm
M1400-100 A 1.60 1.70 295 395 31 130 57

Magnetic properties of CDW-PERM®

Denomination Min. magnetic
polarization at
Typ. magnetic
polarization at
Typ. Yield strength Typ. tensile strength Typ. elongation Typ. hardness Thermal conductivity
DIN EN 10106:2007 [T] Waelzholz [T] [MPa] [MPa] A80 [%] HV5 [W/mK]
Nominal thickness: 0.50 mm
CDW-PERM®400-50A 1.53 1.62 300 430 30 130 30
Nominal thickness: 0.65 mm
CDW-PERM®470-65A 1.53 1.62 300 430 30 130 30

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