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powercore® H 085-27 L




Thickness t

0.27 mm


Electrical resistivity ρel

4.8E-7 Ω·m at 20 °C

Surface insulation resistance SIR

10 Ω·cm² at 20 °C

according to DIN IEC 60404-11


Density ρ

7.65 g/cm³ at 20 °C

Grain structure

Grain oriented electrical steel


Coercive force Hc

5 A/m at 20 °C

Curie temperature Tc

745 °C at 20 °C

Guaranteed core loss Clossguar

0.85 [-] at 20 °C

at 1.7 T and 50 Hz

Guaranteed polarization Jguar

1.88 [-] at 20 °C

at 800 A/m

Saturation polarization Js

2.03 T at 20 °C

Typical core loss Closstyp

0.83 [-] at 20 °C

at 1.7 T and 50 Hz

Typical polarization Jtyp

1.91 [-] at 20 °C

at 800 A/m


Elongation A80 A80

6 - 14 % at 20 °C

Elongation A80, transverse A80,trans

24 - 48 % at 20 °C

Hardness, Rockwell B, 15T HRB 15T

75 - 85 [-] at 20 °C

Hardness, Vickers, 0.1 HV 0.1

175 - 195 [-] at 20 °C

Tensile strength Rm

330 - 370 MPa at 20 °C

Tensile strength, transverse Rm,trans

390 - 420 MPa at 20 °C

Yield strength Rp0.2 Rp0.2

300 - 340 MPa at 20 °C

Yield strength Rp0.2, transverse Rp0.2,trans

330 - 360 MPa at 20 °C


Max service temperature Tmax

840 °C

according to DIN IEC 60404-12, under inert gas for 2 h

Technological properties

Application areas

Large power transformers, distribution transformers, small transformers, current transformers, shunt reactors, wound cores, power generators


Both sides coated, coating thickness: 2 µm - 5 µm


Advantages of powercore®: Energy efficiency thanks to minimal losses at full load and reduced no-load losses, reduced noise emission thanks to minimized magnetostriction and improved insulation properties, cost benefits thanks to lower core weights and more compact dimensions.

This material data has been provided by thyssenkrupp Electrical Steel.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.