Motor laminations
Electric car charging
Hi-Lite stator component
Overview
Manual
ELECTRICAL STEEL
Overview

Non-oriented electrical steel

Our non-oriented electrical steel products including Hi-Lite significantly reduces losses at higher frequencies compared to normal gauge electrical steels. Opening a whole new array of design and application possibilities for your business.

Another focus area is our HP-grades (High Permeability) for applications where improved permeability is of importance. Another recent addition to our product portfolio are our grades with guaranteed mechanical strength.

Total Cost of Ownership drivers:

  • Light weighting: Same performance with less steel
  • Space: Same performance with less space
  • Assistance: Engineering data & assistance for durability-design available

Key Application Areas:

  • Automotive (H) EV vehicles
  • Aviation
  • Power tools
  • Household appliances (Vacuum cleaners)
  • Transformers
  • Filters
  • Industrial high speed motors
  • Magnetic bearings
  • High speed pumps and compressors

Surahammars Bruk offer the widest range of thin gauge electrical steels in the market. These thin materials give lower losses at higher magnetisation frequencies and for example in Hybrid Electric Vehicles this offers the same efficiency and torque with a smaller and lighter weight motor.
As these products are typically used at higher rotational speeds please find below an overview of guaranteed and typical losses also at higher frequencies.

New coatings combine performance with environmental benefits

At Cogent we believe that an environmentally responsible company is a successful company. ?We ensure that our materials are produced in a safe and environmentally-friendly environment. This duty of care is carried forward into our products and their application. That’s why we offer:

  • Our new bonded coating, Suralac 9000, is now available for all products. This coating may be heated to enable lamination stacks to bond together. This type of bonding delivers improved noise performance for large volume production of thin materials. It is compatible with other traditional insulation coatings.
  • Suralac 7000FF – a formaldehyde-free, organic coating. This ensures a clean working environment in application, free from potentially hazardous fumes.
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Customer benefits

At Surahammars Bruk, we understand how flexibility and speed contribute to the success of our customers in today’s marketplace. It means we can deliver supply chain benefits of processed electrical steel supplied locally and fully supported by the manufacturing mill.

Our responsive approach enables customers to:

  • act quickly to win business

  • keep stocks low

  • operate as efficiently as possible

Technical specification
Manual
ELECTRICAL STEEL
Technical specification

Our Hi-Lite grades significantly reduces losses at higher frequencies compared to normal gauge electrical steels. Opening a whole new array of design and application possibilities for your business. Another focus area is our HP-grades (High Permeability) for applications where improved permeability is of importance. A recent addition to our product portfolio are our grades with guaranteed mechanical strength.

For more detailed data on our Hi-Lite grades please contact Surahammars Bruk at sales@sura.se

Hi-Lite Gauge Max Loss Min Jpeak at 50 Hz Min. Mech. properties
Grade mm W/kg T MPa ?
? ? 1.0 T 400 Hz 1.0 T 700 Hz 2500 A/m 5000 A/m Rp0.2 Rm
NO10-1270N 0.1 12.7 23.6 1.52 1.63 330 430
NO12-1180N 0.12 11.8 24.2 1.54 1.64 330 430
NO15-1230N 0.15 12.3 25.6 1.54 1.64 330 430
NO18-1280N 0.18 12.8 27.5 1.55 1.65 330 430
NO20-1350N 0.2 13.5 29.1 1.55 1.65 320 410
NO18-1160H 0.18 11.6 25.5 1.51 1.61 395 495
NO20-1200H 0.2 12 27.5 1.52 1.62 400 500
NO20-1300H 0.2 13 28 1.53 1.63 420 520
NO25-1350H 0.25 13.5 31.5 1.52 1.62 420 520
NO27-1400H 0.27 14 32.4 1.55 1.64 420 520
NO27-1450H 0.27 14.5 34.4 1.52 1.62 420 520
NO30-1500H 0.3 15 36 1.52 1.62 420 520
NO35-1750H 0.35 17.5 42.2 1.52 1.62 420 520

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Core loss SURA* Grade IEC 60404-8-4 JIS C2552 GOST 21427.2 Old AISI ASTM A667 Core Loss 1.5T ? ?
1.5T50Hz W/kg EN 10106 ? -2000 -1983 Grade -2007 60Hz W/lb 50Hz W/lb Datasheet
2.35 M235-35A M235-35A5 (35A230) - - - - - link
2.5 M250-35A M250-35A5 35A250 2413 (M-15) (36F145) 145 2.58 link?
2.7 M270-35A M270-35A5 35A270 2412 (M-19) (36F155) 1.55 2.76 link?
3 M300-35A M300-35A5 35A300 2411 (M-22) (36F175) 1.75 3.1 link?
3.3 M330-35A M330-35A5 - - M-36 (36F185) 1.85 3.26 link?
2.5 M250-50A M250-50A5 50A250 - - - - - link?
2.7 M270-50A M270-50A5 50A270 2414 - - - - link?
2.9 M290-50A M270-50A5 50A290 2413 M-15 47F165 1.65 2.86 link?
3.1 M310-50A M310-50A5 50A290 2412 (M-19) 47F180 1.8 3.12 link?
3.3 M330-50A M330-50A5 - - M-27 47F190 1.9 3.3 link?
3.5 M350-50A M350-50A5 50A350 -2411 (M-36) 47F200 2 3.47 link?
4 M400-50A M400-50A5 50A400 2216 M-43 (47F240) 2.4 4.17 link?
4.7 M470-50A M470-50A5 50A470 -2214 (M-45) (47F280) 2.8 4.89 link?
5.3 M530-50A M530-50A5 - -2211 M-47 - - - link?
6 M600-50A M600-50A5 50A600 2112 - - - - link?
7 M700-50A M700-50A5 50A700 2111 - 47F400 4 7.04 link?
8 M800-50A M800-50A5 50A800 2011 - (47F450) 4.5 7.92 link?
3.1 M310-65A M310-65A5 - - - - - - link?
3.3 M330-65A M330-65A5 - - - (64F200) 2 3.38 link?
3.5 M350-65A M350-65A5 - - M-19 64F210 2.1 3.55 link?
4 M400-65A M400-65A5 - - (M-27) (64F235) 2.35 3.98 link?
4.7 M470-65A M475-50A5 - - (M-43) 64F275 2.75 4.65 link?
5.3 M530-65A M530-65A5 - - (M-45) (64F320) 3.2 5.46 link?
6 M600-65A M600-65A5 - - - - - - link?
7 M700-65A M700-65A5 - - - - - - link?
8 M800-65A M800-65A5 - - ? (64F500 5 8.6 link?
6 M600-100A M600-100A5 - - - - - - link?
7 M700-100A M700-100A5 - - - - - - link?
8 M800-100A M800-100A5 - - - - - - link?
10 M1000-100A M1000-100A5 - - - - - - link?

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American standards

American standards are based on US units and a test frequency of 60 Hz. There is no exact conversion of loss data from 50 Hz to 60 Hz, but these approximate relationships may be used for losses at 1.5 T:
(W/kg at 50 Hz) = (WJlb at 60 Hz)
1,77 (for 0.35 mm grades)
1,74 (for 0.50 mm grades)
1,70 (for 0.65 mm grades)
1,64 (for 1.00 mm grades)

American standard thicknesses differ from metric standards, particularly at 0.50 mm:
EN/IEC ASTM
0.35mm 0.36mm (0.0140inch)
0.50mm 0.47mm(0.0185inch)
0.65mm 0.64mm (0.0250inch)

Conversion factors

1 Tesla (T) = 1 Weber/m2 (Wb/m2) = 10000 Gauss = 64.5 kilolines/sq.in.
1 A/m = 0.01 A/cm = 0.0254 A/in = 0.01257 Oersted
1 W/kg = 0.4536 W/lb (at the same frequency)
1 VA/kg = 0.4536 VA/Ib (at the same frequency)
1 N/mm2 (MPa) = 145.0 psi (lbs/sq.in.)

Dimensions and tolerances
Manual
ELECTRICAL STEEL
Dimensions and tolerances

Our in-house silting and cutting lines make it possible to supply our materials in bespoke widths and lengths.

Physical characteristics

Our dimensional capability is as follows:

Dimension From To
Thickness 0.1 1
Width 10 1250
Length 400 3500


Internal coil diameter is nominally 508 mm.
Maximum coil weight is 20 tonnes or 20,0 kg per mm coil width.
Maximum coil outside diameter is 1850mm.
Our experienced staff are happy to be of further assistance if you have any questions or requirements that fall outside the data presented here. We are happy to provide you with test samples at any time.
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Thickness tolerances

Surahammars Bruk non-oriented fully processed electrical steels meet all the requirements on thickness tolerance and other characteristics such as edge camber and flatness as specified in the standards EN 10106 and IEC 60404-8-4.

Width tolerances

>? Standard Special
? ? tolerance tolerance
mm mm mm mm
10 150 0/+0.2 ±0.08
150 300 0/+0.3 ±0.08
300 600 0/+0.5 ±0.20
600 1000 0/+1.0 ±0.30
1000 1250 0/+1.5 ±0.30


Length tolerances

>? Width tolerance (mm)
400 3500 0/+0.5% (max. 6mm)