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

Surahammars Bruk's non-oriented fully processed electrical steels enable our customers to use electrical steels with the best magnetic properties and coatings, confident in the knowledge that the materials are supported by reliable delivery and strong technical support.

Non-oriented electrical steels between 0.10 mm and 1.00 mm thick are critical in the manufacturing of rotating machines of all sizes, as well as in small transformers and a variety of other electromagnetic applications. Their magnetic properties are combined with tailored insulation coatings which offer the best performance required for the manufacturing process and final application.

The final annealing refines the final magnetic properties after which the bespoke insulation coating is applied.

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

Non-oriented electrical steel

Non-oriented electrical steels are critical in the manufacture of:

  • rotating machines of all sizes
  • small transformers
  • a variety of other electromagnetic applications


The magnetic properties of these steels are combined with tailored insulation coatings - offering the best performance required for the manufacturing process and final application.

Our product range also includes:

  • Hi-Lite - Ultra-thin gauge grades - offering the superior performance required for high-frequency applications
  • HP-grades for applications where improved permeability is of importance

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.

Our new bonded coating, Suralac 9000, is now available for our thin gauge 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.

Reliable performance

Electrical steels play a vital role in the generation, transmission, distribution and use of electrical power. They are one of the most important magnetic materials produced today. We supply a wide range of processed grain-oriented and non-oriented electrical steels. Our quality-assured electrical steels deliver:

  • consistent magnetic performance
  • excellent delivery performance

We also offer new coatings that combine performance with environmental and safety benefits. We have extensive in-house knowledge and experience of electrical steels and their applications.

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

Innovative solutions for improved efficiency

As the global consumption of electricity continues to rise, our focus is to deliver innovative solutions to support improved efficiencies in the generation, transmission and consumption of electricity.

The delivery of a consistently highly-efficient electrical steel is essential to maintaining high-performing generators, transformers and motors in their final application. We ensure the high performance of our materials throughout their application life cycle through:

  • the reliable quality of the insulation coatings we apply to our electrical steels
  • maintenance of exact tolerances

Surahammars Bruks Aktiebolag
Registration number 556050-1206

 

Hi-Lite
Manual
ELECTRICAL STEEL
Hi-Lite thin gauge products

Our Hi-Lite thin gauge products 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.

The product range also includes the thin gauge grades, which offer the superior performance required for high frequency applications, and HP-grades 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 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 a below an overview of guaranteed and typical losses also at higher frequencies (400 and 2500).

 

Technical specification
Manual
ELECTRICAL STEEL
Technical specification

Cogent Power's electrical steels are manufactured to the most demanding requirements and meet global standards for electrical steel.
Our products are subject to rigorous quality control procedures throughout their manufacture to ensure their technical specifications are consistently produced.

Electrical steel grades are designated according to guaranteed maximum specific total loss at a peak magnetic polarisation of 1.5 T and 50Hz.

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 

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.

We have partnerships with several local companies within the Nordic Power Components network which allow us to serve our customers with laser cut laminations and stamped laminations.

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.

 

Thickness tolerances

Cogent Power 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)