Data sheet isovac 250-35 A | page 1/7 | 01/2018

isovac 250-35 A

Manufactured in the most modern production lines, this fully processed isovac® grade exhibits highly homogeneous properties across the width and length of the entire strip. The result is excellent and consistent processability in the manufacture of highly efficient electrical components.Upon request, isovac 250-35 A can be supplied with an electrical steel insulation system and can be used directly in as-delivered condition.

Convincing advantages: » Best processability through consistent mechan-ical properties and homogeneous, clean sur-faces

» Excellent stackability resulting from high dimen-sional accuracy in rolling direction and perpen-dicular to rolling direction (thickness tolerance)

» Innovative electrical steel insulation systems upon request

The perfect solution for direct application

Electrical Steel | Fully processed Data sheet isovac 250-35 A | page 1/7 | 01/2018

voestalpine Steel Division www.voestalpine.com/isovac

Data sheet isovac 250-35 A | page 2/7 | 01/2018

Grade namedaccording to isovac®

DIN EN 10106 IEC60404-8-4

JISC2552

GOST21427.2

ASTMA677

AISI IS648 GB/T2521.1Material No. Abbreviation

isovac 250-35 A 1.0800 M250-35A M250-35A 5 35A250 2413 36F145 M-15 35C250 35W250

Grade named according to conventional international standards:

Grade named according to isovac®

Yield strength ReH

[MPa]

0.2 %-Yield strength Rp0.2

[MPa]

Tensile strength Rm

[MPa]

ElongationA80 [%]

HardnessHV5

[-]

isovac 250-35 A 455 450 570 15 210

Mechanical properties: Tensile test according to DIN EN ISO 6892-1 and hardness according to DIN EN ISO 6507-1 (Typical values); Test direction: Transverse

Specific total loss Magnetic polarization Relative permeability

Grade namedaccording to isovac®

1.0 T P10

1.5 TP15

2500 A/mJ25

5000 A/mJ50

10000 A/mJ100

1.5 Tµr

50 Hz[W/kg]

60 Hz[W/lb]

50 Hz[W/kg]

60 Hz[W/lb] [T] [T] [T] [-]

isovac 250-35 A 0.85 0.48 2.15 1.20 1.52 1.61 1.74 600

Magnetic properties: in as-delivered condition (Typical values)Test direction: Mean value from longitudinal and transverse measurements at 50 Hz (60 Hz), single-sheet test

Grade named according to isovac®

Densityρ

[g/cm3]

Specific electrical resistanceρs

[µΩcm]

Thermal conductivityλ

[W/mK]

isovac 250-35 A 7.60 64.5 22

Physical properties: Typical values

voestalpine supplies isovac 250-35 A, an electrical steel of the highest quality. We offer you a customer-focused overall package of products, service and logistics in addition to all the advantages of our integrated metallurgical facility and Steel Service Centers.

Data sheet isovac 250-35 A | page 3/7 | 01/2018

Characteristics Ps/J loss curve and characteristics J/H magnetization curveTest direction: Mean value from longitudinal and transverse measurements at indicated frequencies, single-sheet test

Characteristics µr/J permeability curveTest direction: Mean value from longitudinal and transverse measurements at 50 Hz, single-sheet test

0.0

0.1

1.0

10.0

100.0

1000.0

0 500 1000 1500 2000

P S [W

/kg]

J [mT]

50 Hz 60 Hz 200 Hz 400 Hz 500 Hz 600 Hz 700 Hz 800 Hz 1000 Hz

0

2000

4000

6000

8000

10000

12000

14000

0 500 1000 1500 2000

µ r

J [mT]

50 Hz

0

200

400

600

800

1000

1200

1400

1600

1800

2000

10 100 1000 10000

J [mT]

H [A/m]

50 Hz

Data sheet isovac 250-35 A | page 4/7 | 01/2018

Frequency dependence of magnetic propertiesTest direction: Mean value longitudinal and transverse at indicated frequencies and polarizations, single-sheet test

50 Hz 60 Hz 200 Hz

J [mT]

H[A/m]

Ps[W/kg]

µr[-]

J [mT]

H[A/m]

Ps[W/kg]

µr[-]

J [mT]

H[A/m]

Ps[W/kg]

µr[-]

150 20 0.04 5691 150 21 0.05 5621 150 24 0.25 4721

200 23 0.06 6491 200 24 0.08 6389 200 29 0.41 5210

250 26 0.09 7268 250 27 0.11 7137 250 33 0.59 5687

300 29 0.12 8012 300 30 0.15 7853 300 38 0.77 6146

350 32 0.15 8711 350 33 0.19 8527 350 42 0.97 6583

400 35 0.18 9353 400 36 0.23 9148 400 46 1.18 6990

450 38 0.22 9929 450 39 0.28 9706 450 50 1.42 7364

500 41 0.26 10427 500 42 0.33 10191 500 54 1.68 7696

550 43 0.30 10836 550 44 0.38 10593 550 57 1.98 7985

600 46 0.35 11156 600 47 0.44 10911 600 61 2.30 8232

650 49 0.40 11385 650 50 0.51 11145 650 64 2.64 8441

700 52 0.45 11524 700 53 0.58 11294 700 67 3.01 8618

750 55 0.51 11572 750 56 0.65 11359 750 71 3.41 8765

800 59 0.57 11529 800 60 0.73 11339 800 74 3.82 8888

850 63 0.64 11393 850 64 0.81 11233 850 78 4.26 8986

900 68 0.70 11159 900 69 0.89 11030 900 82 4.72 9045

1000 81 0.85 10369 1000 81 1.08 10290 1000 92 5.72 8972

1050 89 0.93 9798 1050 90 1.18 9732 1050 99 6.27 8794

1100 100 1.02 9092 1100 101 1.30 9043 1100 108 6.86 8455

1150 116 1.12 8224 1150 117 1.42 8208 1150 122 7.49 7885

1200 139 1.23 7132 1200 139 1.56 7148 1200 142 8.20 7009

1250 177 1.36 5780 1250 175 1.72 5810 1250 177 9.02 5785

1300 260 1.51 4277 1300 259 1.91 4303 1300 260 9.97 4331

1350 435 1.68 2791 1350 437 2.13 2804 1350 440 11.07 2832

1400 795 1.87 1596 1400 796 2.36 1596 1400 804 12.24 1605

1450 1417 2.04 900 1450 1408 2.58 897 1450 1421 13.41 897

1500 2263 2.20 559 1500 2250 2.78 561 1500 2268 14.57 560

1550 3294 2.35 381 1550 3291 2.98 384 1550 3316 15.77 383

1600 4568 2.51 285 1600 4579 3.18 284 1600 4613 17.05 283

1650 6131 2.67 223 1650 6148 3.39 221 1650 6195 18.45 220

1700 7907 2.82 179 1700 7922 3.62 177 1700 7987 19.94 176

1731 9000 2.99 153 1731 9000 3.79 153 1729 9000 20.75 153

1754 10000 3.05 140 1754 10000 3.86 140 1752 10000 21.65 139

Data sheet isovac 250-35 A | page 5/7 | 01/2018

Frequency dependence of magnetic propertiesTest direction: Mean value longitudinal and transverse at indicated frequencies and polarizations, single-sheet test

400 Hz 500 Hz 600 Hz

J [mT]

H[A/m]

Ps[W/kg]

µr[-]

J [mT]

H[A/m]

Ps[W/kg]

µr[-]

J [mT]

H[A/m]

Ps[W/kg]

µr[-]

100 23 0.25 3557 100 25 0.35 3332

150 29 0.68 3905 150 31 0.96 3643

200 35 1.13 4249 200 38 1.60 3950

250 41 1.60 4584 250 44 2.26 4248

300 47 2.11 4907 300 51 2.96 4535

350 52 2.65 5213 350 57 3.72 4807

400 58 3.24 5498 400 63 4.55 5059 400 67 5.59 4849

450 63 3.89 5758 450 69 5.47 5288 450 73 6.91 5018

500 68 4.62 5989 500 74 6.48 5489 500 78 8.31 5171

550 73 5.43 6187 550 80 7.60 5660 550 84 9.84 5295

600 77 6.31 6355 600 85 8.84 5803 600 90 11.53 5391

650 82 7.27 6496 650 90 10.18 5921 650 96 13.35 5464

700 86 8.31 6613 700 95 11.64 6015 700 103 15.32 5517

750 91 9.42 6708 750 100 13.21 6088 750 109 17.42 5555

800 96 10.60 6785 800 105 14.89 6142 800 115 19.65 5583

850 100 11.85 6846 850 111 16.68 6180 850 122 22.02 5601

900 106 13.18 6888 900 117 18.59 6201 900 129 24.56 5603

1000 117 16.11 6896 1000 130 22.83 6178 1000 145 30.38 5524

1050 123 17.73 6858 1050 137 25.18 6136 1050 154 33.67 5450

1100 130 19.48 6809 1100 145 27.70 6096 1100 163 37.19 5405

1150 139 21.37 6719 1150 154 30.44 6042 1150 171 41.03 5379

1200 154 23.48 6356 1200 166 33.49 5808 1200 183 45.34 5233

1250 184 25.88 5510 1250 189 36.99 5217 1250 208 50.24 4813

1300 263 28.67 4266 1300 267 41.07 4203 1300 276 55.81 4018

1350 443 31.89 2828 1350 451 45.78 2832 1350 432 62.15 2818

1400 808 35.36 1592 1400 814 50.98 1579 1400 801 69.31 1616

1450 1429 38.92 885 1450 1416 56.46 872 1450 1474 77.15 883

1500 2280 42.63 557 1500 2281 62.05 557 1500 2273 84.87 559

1550 3328 46.60 383 1550 3412 67.72 381

1600 4621 51.00 283 1600 4785 74.15 274

1650 6194 55.96 219 1650 6362 81.81 209

1700 7972 61.32 175 1700 8081 90.38 169

1730 9000 65.15 153 1731 9000 96.08 153

1753 10000 67.27 139 1749 10000 97.72 139

Data sheet isovac 250-35 A | page 6/7 | 01/2018

Frequency dependence of magnetic propertiesTest direction: Mean value longitudinal and transverse at indicated frequencies and polarizations, single-sheet test

700 Hz 800 Hz 1000 Hz

J [mT]

H[A/m]

Ps[W/kg]

µr[-]

J [mT]

H[A/m]

Ps[W/kg]

µr[-]

J [mT]

H[A/m]

Ps[W/kg]

µr[-]

400 70 6.98 4592 400 84 12.11 3816

450 76 8.64 4746 450 82 10.61 4424 450 92 15.01 3920

500 82 10.40 4882 500 89 12.79 4539 500 100 18.12 4007

550 89 12.34 4988 550 96 15.21 4624 550 109 21.61 4066

600 96 14.47 5065 600 103 17.87 4681 600 118 25.49 4099

650 102 16.79 5118 650 111 20.77 4716 650 127 29.72 4111

700 109 19.29 5152 700 119 23.89 4736 700 137 34.29 4109

750 116 21.96 5173 750 127 27.21 4747 750 147 39.14 4100

800 124 24.81 5187 800 135 30.73 4754 800 156 44.26 4090

850 131 27.84 5194 850 142 34.45 4759 850 166 49.69 4079

900 139 31.12 5184 900 151 38.55 4743 900 177 55.79 4046

1000 158 38.80 5053 1000 175 48.70 4553 1000 209 71.71 3814

1050 169 43.17 4960 1050 188 54.52 4434 1050 226 80.80 3687

1100 179 47.79 4909 1100 200 60.33 4391 1100 240 89.38 3651

1150 190 52.86 4853 1150 213 66.79 4328 1150 258 99.06 3577

1200 202 58.53 4740 1200 226 74.08 4225 1200 274 110.08 3493

1250 220 64.94 4479 1250 243 82.31 4035 1250 289 122.43 3398

1300 283 72.24 3840 1300 303 91.56 3525 1300 342 136.26 3066

1350 445 80.59 2707 1350 463 101.99 2558 1350 492 151.85 2332

1400 808 89.99 1558 1400 816 114.03 1536 1400 832 169.86 1495

1450 1444 100.24 872 1450 1435 127.62 882 1450 1434 190.33 893

1500 2258 110.32 559 1500 2262 140.33 557 1500 2255 210.52 558

Data sheet isovac 250-35 A | page 7/7 | 01/2018

voestalpine Stahl GmbH voestalpine-Straße 34020 Linz, AustriaT. +43/50304/15-8018produktmanagement@voestalpine.comwww.voestalpine.com/isovac

The information and product properties contained in this printed material are non-binding and serve the sole purpose of technical orientation. They do not replace individual advisory services provided by our sales and customer service teams. The product information and characteristics set forth herein shall not be considered as guaranteed properties unless explicitly stipulated in a separate contractual agreement. For this reason, voestalpine shall not grant any warranty nor be held liable for properties and/or specifications other than those subject to explicit agreement. This also applies to the suitability and applicability of products for certain applications as well as to the further processing of materials into final products. All application risks and suitability risks shall be borne by the customer. The General Terms of Sale for Goods and Services of the voestalpine Steel Division shall apply to all materials supplied by the voestalpine Steel Division and can be accessed using the following link: www.voestalpine.com/stahl/en/The-Steel-Division/General-Terms-of-Sale

Technical changes are reserved. Errors and misprints are excepted. No part of this publication may be reprinted without explicit written permission by voestalpine Stahl GmbH.

Please find further information and downloadable files at

www.voestalpine.com/isovac

Available Dimensions

Grade namedaccording to isovac®

Delivery form Width[mm]

Length[mm]

isovac 250-35 AWide strip / Slit strip 19 – 1320 -

Cut-to-length sheets 300 – 1320 300 – 5000

Grade namedaccording to isovac®

Uncoated C-3 Backlack C-5 C-6

isovac 250-35 A

Deliverable coating systems

Available On request