The document details the manufacturing process and specifications of electrical steel produced in Korea, highlighting its excellent performance and energy efficiency. It discusses grain-oriented and non-oriented electrical steel, quality control standards, and diverse product lines tailored to customer needs, particularly for use in transformers and environment-friendly vehicles. Additionally, it outlines key technical properties, testing standards, and product applications.

1. Electrical Steel
2010-11-①
①
Made in Korea
전기강판영문표지1113 2010.11.13 1:37 PM 페이지1 g6

2. MANUFACTURING PROCESS AND FACILITIES · 4
SPECIFICATION & MAIN APPLICATION · 6
GRAIN-ORIENTED ELECTRICAL STEEL · 8
NON-ORIENTED ELECTRICAL STEEL · 14
SURFACE INSULATION · 26
STRESS RELIEF ANNEALING · 27
RELATIONS AMONG WEIGHT, OUTSIDE DIAMETER AND WIDTH OF COIL · 29
MAJOR INTERNATIONAL STANDARDS · 30
UNIT CONVERSION TABLES, THE INTERNATIONAL SYSTEM OF UNITS(SI) · 32
PACKAGING/MARKING · 33
GLOBAL NETWORK · 34
Contents
>>>
전기강판영문표지1113 2010.11.13 1:37 PM 페이지2 g6

3. We move the world in silence
1. Excellent materials
produces the world’
s best electrical steel with its outstanding manufacturing technology.
Customers prefer products made of electrical steel because they feature excellent performance
and high energy efficiency.
In particular, domain refined GO made by the latest laser technology are mainly used for an extra-high
voltage transformer which is the most energy efficient in the world.
2. Reliable Quality Control
produces products in the advanced plants and facilities and applied strict quality control
standard to them to provide high-quality materials to customers.
3. Diversified Product Lines
provides various grade of electrical steel to meet each customer’
s needs.
develops a lot of customized materials which are outstanding performers at a high frequency
and show lower core loss after heat treatment to provide the most appropriate materials for use. The
diversified electrical steel is now widely used for high-performance products, like driving
motors of environment-friendly cars.
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지3 g6

4. 04 www.posco.com
>> Manufacturing
Process and Facilities
Pickling
Cold Rolling Annealing
Insulation Coating
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지4 g6

5. Manufacturing process (Grain-oriented electrical steel)
Manufacturing process (Non grain-oriented electrical steel)
05
Electrical Steel
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6. 06 www.posco.com
● ● ●
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● ● ●
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● ● ● ● ● ● ●
● ● ● ●
● ● ● ●
●
●
● ● ●
Large rotating
machine
Medium rotating
machine
General use
AC motor
Hermetically
sealed motor
Small motor & Intermittent
Service AC motor
Large power
transformer
Medium & small
power transformer
Distribution
transformer
Reactor & magnetic
amplifier
Audio
transformer
Current & potential
transformer
Ballast
Welding
transformer
Static
Machines
Rotating
Machines
Grain-Oriented Non-Oriented
PN-Core PNM-Core PNA-Core PNS-Core PNF-Core
Magnetic
switch core
PHD-
Core
PH-
Core
PG-
Core PN210
-400
PN440
-700
PN800
-1300
PNS250 PNF1500
PNA300
-450
PNM500
-540
>> Specification &
Main Application
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지6 g6

7. 07
Electrical Steel
The usage presented in this section reflects the general use and shall be used as a reference.
Please be sure to consult with our associates when making orders for specific usage.
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지7 g6

8. 08 www.posco.com
>> Grain-Oriented
Electrical Steel
PG-Core
The grain's easy magnetization direction is aligned to the rolling direction. Therefore, this product
features excellent magnetic properties in the rolling direction. It is widely used for large-sized power
transformers or mid/small size transformers.
Standard Size
Grade
0.27
(0.0106)
0.30
(0.0118)
0.35
(0.0138)
7.65
1.10
1.20
1.30
1.10
1.20
1.30
1.40
1.45
1.55
0.50
0.54
0.59
0.50
0.54
0.59
0.64
0.66
0.70
1.80
95.0
95.5
96.0
Thickness
mm (in.)
Density
(kg/dm3
) Watt per kilogram Watt per pound
Magnetic Flux
Density.Min
T (B8)
Lamination Factor,
Min(%)
27PG110
27PG120
27PG130
30PG110
30PG120
30PG130
30PG140
35PG145
35PG155
Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000).
W17/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.7T.
Core loss and induction are measured after stress relief annealing in a longitudinal direction.
(annealing condition : 840℃, 1Hr, Under neutral atmosphere)
Product
27PG110
27PG120
27PG130
30PG110
30PG120
30PG130
30PG140
35PG145
35PG155
0.27
(0.0106)
0.30
(0.0118)
0.35
(0.0138)
850-1000
(33.46-47.24)
1000
(39.37)
1200
(47.24)
508
(20)
PG-Core
Note: For non-standard sizes, please contact us
Width mm (in.)
Available Standard
Specification
Magnetic properties and lamination factor
Grade
Thickness
mm (in.)
Inside diameter
mm (in.)
Core Loss, Max (W17/50)
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9. 09
Electrical Steel
Typical Electrical and Magnetic Property
Grade
0.27
(0.0106)
0.30
(0.0118)
0.35
(0.0138)
7.65 48
1.85
1.85
1.84
1.85
1.85
1.84
1.84
1.84
1.83
Thickness
mm (in.)
Density
(kg/dm3
)
Resistivity
Ωㆍm
(×10-8
)
27PG110
27PG120
27PG130
30PG110
30PG120
30PG130
30PG140
35PG145
35PG155
Note : Above values are not guaranteed.
Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method, using specimens
taken longitudinal to the rolling and then annealed to develop full magnetic properties.
Core Loss
Watt per kilogram
W15/50
0.76
0.78
0.82
0.80
0.83
0.87
0.90
0.98
1.01
1.05
1.15
1.22
1.08
1.17
1.25
1.32
1.37
1.45
1.01
1.02
1.07
1.05
1.09
1.12
1.17
1.29
1.33
1.37
1.48
1.55
1.48
1.53
1.61
1.70
1.80
1.89
0.35
0.35
0.37
0.36
0.38
0.40
0.41
0.44
0.46
0.48
0.52
0.55
0.49
0.53
0.57
0.60
0.62
0.66
0.46
0.46
0.49
0.48
0.49
0.51
0.53
0.59
0.61
0.62
0.67
0.70
0.67
0.69
0.73
0.77
0.82
0.86
W17/50 W15/60 W17/60
Watt per pound
W15/50 W17/50 W15/60 W17/60
Typical Mechanical Property and Lamination Factor
Thickness
mm (in.)
344
345
364
385
412
423
322
330
345
340
350
357
11
12
10
44
49
40
182
174
181
98.0
99.0
99.5
L C L C L C
Hardness
Hv1
Lamination
Factor
(%)
0.27(0.0106)
0.30(0.0118)
0.35(0.0138)
Note : 1. Tests are conducted in accordance with IEC404-2(or JIS C 2550-2000)
2. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
3. Specimens with 0A coating are used for lamination factor test.
Tensile Strength
(N/mm2
)
Yield Point
(N/mm2
)
Elongation
(%)
Dimension & Shape Tolerance
Note : The thickness deviation in width direction means the gap between the thickness of center and the one
of part 15mm away from the edge part.
Width
mm (in.)
0.27(0.0106)
0.30(0.0118)
0.35(0.0138)
±0.03
(0.0012)
0.03(0.0012)
and under
+0.6(0.0236)
0
1.0(0.0394)
and under
Thickness
mm (in.)
Thickness Tolerance
mm (in.)
Thickness deviation in
transverse direction
mm (in.)
Width Tolerance
mm (in.)
Camber
(Length : 2m)
mm (in.)
850 and over
(33.46)
Magnetic
Flux Density.
T
(B8)
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지9 g6

10. 10 www.posco.com
Standard Size
Specification
Product
23PH085
23PH090
23PH095
23PH100
27PH095
27PH100
27PH110
30PH100
30PH105
0.23
(0.0091)
0.27
(0.0106)
0.30
(0.0118)
850-1200
(33.46-47.24)
1000
(39.37)
1200
(47.24)
508
(20)
Grade
Thickness
mm (in.) Available Standard
Inside Diameter
mm (in.)
PH-Core
Note: For non-standard sizes, please contact us.
Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000).
W17/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.7T.
Core loss and induction are measured after stress relief annealing in a longitudinal direction.
(annealing condition : 840℃, 1Hr, Under neutral atmosphere)
Grade
0.23
(0.0091)
0.27
(0.0106)
0.30
(0.0118)
7.65
0.85
0.90
0.95
1.00
0.95
1.00
1.10
1.00
1.05
0.39
0.41
0.43
0.45
0.43
0.45
0.50
0.45
0.48
1.88
94.5
95.0
95.5
Thickness
mm (in.)
Density
(kg/d㎥)
Lamination
Factor, Min(%)
23PH085
23PH090
23PH095
23PH100
27PH095
27PH100
27PH110
30PH100
30PH105
Magnetic properties and lamination factor
Width mm (in.)
PH-Core
The directional property of grain-oriented electrical steel is more reinforced in the rolling direction than
PG-Core and therefore features low core loss and high induction. It is used for iron core of both large and
other size power transformers and desirable for high efficiency and miniaturization of machinery.
Core Loss, Max (W17/50)
Watt per kilogram Watt per pound
Magnetic Flux
Density.Min
T (B8)
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11. 11
Electrical Steel
Dimension & Shape Tolerance
Width
mm (in.)
0.23(0.0091)
0.27(0.0106)
0.30(0.0118)
±0.03(0.0012)
0.03(0.0012)
and under
+0.6(0.0236)
0
1.0(0.0394)
and under
Thickness
mm (in.)
Thickness
Tolerance
mm (in.)
Thickness deviation in
transverse direction
mm (in.)
Width
Tolerance
mm (in.)
Camber
(Length : 2 m)
mm (in.)
850 and over
(33.46)
Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.
Typical Mechanical Property and Lamination Factor
Thickness
mm (in.)
381
361
345
424
415
412
356
337
330
383
367
358
18
18
20
42
42
45
178
182
184
98
98
99
L C L C L C
Hardness
Hv1
Lamination
Factor
(%)
0.23(0.0091)
0.27(0.0106)
0.30(0.0118)
Note : 1. Tests are conducted in accordance with IEC404-2(or JIS C 2550-2000)
2. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
3. Specimens with 0A coating are used for lamination factor test.
Tensile Strength
(N/mm2
)
Yield Point
(N/mm2
)
Elongation
(%)
Typical Electrical and Magnetic Property
Grade
23PH085
23PH090
23PH095
23PH100
27PH095
27PH100
27PH110
30PH100
30PH105
Note : Above values are not guaranteed.
Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method, using specimens taken
longitudinal to the rolling and then annealed to develop full magnetic properties.
Core Loss(W/kg)
Watt per kilogram Watt per pound
W15/50 W17/50 W15/60 W17/60 W15/50 W17/50 W15/60 W17/60
0.23
(0.0091)
0.27
(0.0106)
0.30
(0.0118)
7.65 48
0.62
0.64
0.65
0.70
0.70
0.72
0.78
0.74
0.76
0.83
0.88
0.90
0.95
0.93
0.97
1.03
0.99
1.01
0.81
0.85
0.86
0.92
0.92
0.95
1.01
0.98
1.00
1.10
1.15
1.17
1.26
1.23
1.27
1.37
1.29
1.33
0.28
0.29
0.30
0.32
0.32
0.33
0.35
0.34
0.35
0.38
0.40
0.41
0.43
0.42
0.44
0.47
0.45
0.46
0.37
0.39
0.39
0.42
0.42
0.43
0.46
0.44
0.45
0.50
0.52
0.53
0.57
0.55
0.58
0.62
0.59
0.60
1.91
1.91
1.91
1.90
1.91
1.90
1.90
1.91
1.90
Thickness
mm (in.)
Density
(kg/dm3
)
Resistivity
Ωㆍm
(×10-8
)
Magnetic
Flux
Density.
T (B8)
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12. 12 www.posco.com
PHD-Core
Magnetic domain refined steel is a grade that has been specially laser treated to lower the core loss
some 30% from that of CGO steel. Energy efficiency is raised and magnetostriction is lowered, resulting
in low noise. . It is used for iron core of both large and other size power transformers that have not been
heat treated.
Standard Size
Product
23PHD080
23PHD085
27PHD090
27PHD095
30PHD095
0.23(0.0091)
0.27(0.0106)
0.030(0.0118)
850-1000
(33.46-39.37)
1000
(39.37)
508
(20)
Grade
Thickness
mm (in.) Available Standard
Inside diameter
mm (in.)
PHD-Core
Note: For non-standard sizes, please contact us
Width mm (in.)
Note: The above test is conducted in accordance to IEC60404-3 (or JIS C 2556), using as-sheared specimens in
longitudinal to rolling direction, without stress relief annealing.
W17/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.7T.
Grade
0.23(0.0091)
0.27(0.0106)
0.030(0.0118)
7.65
0.80
0.85
0.90
0.95
0.95
0.36
0.39
0.41
0.43
0.43
1.88
1.88
94.5
95.0
95.5
Thickness
mm (in.)
Density
(kg/dm3
) Watt per kilogram Watt per pound
Lamination
Factor, Min(%)
23PHD080
23PHD085
27PHD090
27PHD095
30PHD095
Specification
Magnetic properties and lamination factor.
Dimension & Shape Tolerance
Width
mm (in.)
0.23(0.0091)
0.27(0.0106)
0.30(0.0118)
±0.03
(0.0012)
0.03(0.0012)
and under
+0.6(0.0236)
0
1.0(0.0394)
and under
Thickness
mm (in.)
Thickness
Tolerance
mm (in.)
Thickness deviation in
transverse direction
mm (in.)
Width
Tolerance
mm (in.)
Camber
(Length : 2 m)
mm (in.)
850 and over
(33.46)
Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.
Core Loss, Max(W17/50) Magnetic Flux
Density.Min
T (B8)
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지12 g6

13. 13
Electrical Steel
Typical Mechanical Property and Lamination Factor
Thickness
mm (in.)
381
361
345
424
415
412
356
337
330
383
367
358
14
11
12
49
44
49
176
185
183
99.0
98.5
99.0
L C L C L C
0.23(0.0091)
0.27(0.0106)
0.30(0.0118)
Note : 1. Tests are conducted in accordance with IEC404-2(or JIS C 2550-2000)
2. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
3. Specimens with 0A coating are used for lamination factor test.
Tensile Strength
(N/mm2
)
Yield Point
(N/mm2
)
Elongation
(%)
Hardness
Hv1
Lamination
Factor
(%)
Typical Electrical and Magnetic Property
Grade
23PHD080
23PHD085
27PHD090
27PHD095
30PHD095
Core Loss
Watt per kilogram Watt per pound
W15/50 W17/50 W15/60 W17/60 W15/50 W17/50 W15/60 W17/60
0.23
(0.0091)
0.27
(0.0106)
0.30
(0.0118)
7.65 48
0.57
0.59
0.64
0.66
0.68
0.77
0.80
0.87
0.91
0.93
0.75
0.78
0.85
086
0.91
1.01
1.05
1.14
1.18
1.23
0.26
0.27
0.29
0.30
0.31
0.35
0.36
0.40
0.41
0.42
0.34
0.35
0.39
0.39
0.41
0.46
0.48
0.52
0.54
0.56
1.91
1.91
1.91
1.91
1.91
Thickness
mm (in.)
Density
(kg/dm3
)
Resistivity
Ωㆍm
(×10-8
)
Magnetic
Flux
Density.
T
(B8)
Note : Above values are not guaranteed.
Tests are conducted in accordance with IEC60404-3 (or JIS C 2556-1996) method, using specimens in
longitudinal to rolling direction.
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지13 g6

14. >> Non-oriented
Electrical Steel
PN-Core
The non-oriented electrical steel features even magnetic properties in the rolling direction and in other directions.
They are widely used for iron core materials of rotating machines ranging from large-size power generators to
small-size precision electric motors. They are also desirable for iron core of small-size power transformers.
Standard Size
Note: For non-standard sizes, please contact us
Product Grade
Thickness
mm (in.) Available Standard
InsideDiameter
mm (in.)
35PN210, 35PN230, 35PN250, 35PN270, 35PN300
50PN250, 50PN270, 50PN290, 50PN310, 50PN350
65PN290, 65PN310, 65PN350
35PN360, 35PN440
50PN400, 50PN470, 50PN600, 50PN700, 50PN800,
50PN1000, 50PN1300
65PN600, 65PN700, 65PN800, 65PN1000, 65PN1300
950~1200
(37.40-47.24)
950~1250
(37.40-49.21)
1000
(39.37)
1100
(43.31)
1200
(47.24)
508
(20)
PN-Core
(Coil)
Width mm (in.)
Magnetic properties and lamination factor.
Grade
0.35
(0.0138)
7.60
7.60
7.60
7.65
7.65
7.65
7.70
2.10
2.30
2.50
2.70
3.00
3.60
4.40
0.95
1.04
1.14
1.23
1.36
1.63
2.00
1.62
1.62
1.62
1.62
1.62
1.63
1.65
95.0
35PN210
35PN230
35PN250
35PN270
35PN300
35PN360
35PN440
Specification
0.35
(0.0138)
0.50
(0.0197)
0.65
(0.0256)
0.35
(0.0138)
0.50
(0.0197)
0.65
(0.0256)
Thickness
mm (in.)
Density
(kg/dm3
)
Magnetic Flux
Density.Min
T
(B50)
Lamination
Factor,
Min
(%)
Core Loss. Max (W15/50)
Watt per kilogram Watt per pound
14 www.posco.com
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지14 g6

15. Dimension & Shape Tolerance
Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.
Width
mm (in.)
0.35(0.0138)
0.50(0.0197)
0.65(0.0256)
0.35(0.0138)
0.50(0.0197)
0.65(0.0256)
±0.035(0.00138)
±0.040(0.00158)
±0.052(0.00205)
±0.035(0.00138)
±0.040(0.00158)
±0.052(0.00205)
0.02(0.0008) and under
0.03(0.0012) and under
0.04(0.0016) and under
0.03(0.0012) and under
0.04(0.0016) and under
0.04(0.0016) and under
+1.5(0.0591)
0
+1.5(0.0591)
0
1.0(0.0394)
and under
Thickness
mm (in.)
Thickness
Tolerance
mm (in.)
Thickness deviation in
transverse direction
mm (in.)
Width
Tolerance
mm (in.)
Camber
(Length : 2 m)
mm (in.)
1000(39.37)
and under
1000(39.37)
and over
Grade
0.50
(0.0197)
0.65
(0.0256)
7.60
7.60
7.60
7.65
7.65
7.65
7.70
7.75
7.80
7.85
7.85
7.85
7.60
7.65
7.65
7.65
7.70
7.75
7.80
7.85
7.85
7.85
2.50
2.70
2.90
3.10
3.50
4.00
4.70
6.00
7.00
8.00
10.00
13.00
2.90
3.10
3.50
4.00
4.70
6.00
7.00
8.00
10.00
13.00
1.14
1.23
1.32
1.41
1.59
1.82
2.13
2.72
3.18
3.63
4.54
5.90
1.32
1.41
1.59
1.82
2.13
2.72
3.18
3.63
4.54
5.90
1.62
1.62
1.62
1.62
1.62
1.63
1.64
1.66
1.70
1.70
1.70
1.70
1.62
1.62
1.62
1.63
1.64
1.66
1.70
1.70
1.70
1.70
96.0
97.0
50PN250
50PN270
50PN290
50PN310
50PN350
50PN400
50PN470
50PN600
50PN700
50PN800
50PN1000
50PN1300
65PN290
65PN310
65PN350
65PN400
65PN470
65PN600
65PN700
65PN800
65PN1000
65PN1300
Thickness
mm (in.)
Density
(kg/dm3
)
Magnetic Flux
Density.Min
T
(B50)
Lamination
Factor,
Min
(%)
Core Loss. Max (W15/50)
Watt per kilogram Watt per pound
Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000).
W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.
15
Electrical Steel
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지15 g6

16. 16 www.posco.com
Typical Electrical and Magnetic Property
Grade
0.35
(0.0138)
0.50
(0.0197)
0.65
(0.0256)
7.60
7.60
7.60
7.65
7.65
7.65
7.70
7.60
7.60
7.60
7.65
7.65
7.65
7.70
7.75
7.80
7.85
7.85
7.85
7.65
7.70
7.75
7.80
7.85
7.85
7.85
59
59
55
52
45
45
42
59
59
56
53
50
45
42
34
30
17
17
17
45
42
34
30
17
17
17
0.84
0.89
0.96
1.02
1.08
1.25
1.39
1.00
1.05
1.09
1.21
1.30
1.41
1.64
1.98
2.62
2.93
3.20
3.75
1.63
1.91
2.27
3.02
3.38
3.64
4.32
2.04
2.10
2.25
2.40
2.53
2.80
3.08
2.37
2.50
2.60
2.70
2.93
3.18
3.55
4.40
5.55
6.26
6.80
7.56
3.70
4.16
5.14
6.47
7.28
7.86
8.79
1.03
1.07
1.17
1.28
1.38
1.55
1.73
1.31
1.35
1.45
1.55
1.63
1.82
2.06
2.49
3.30
3.63
4.10
4.75
2.23
2.59
3.09
4.06
4.56
5.00
5.83
2.53
2.60
2.85
3.00
3.18
3.45
3.82
3.08
3.22
3.35
3.46
3.74
4.01
4.56
5.63
7.03
7.94
8.62
9.54
4.85
5.45
6.68
8.33
9.39
10.14
11.29
0.38
0.40
0.43
0.46
0.49
0.57
0.63
0.45
0.48
0.50
0.55
0.59
0.64
0.74
0.90
1.19
1.33
1.45
1.70
0.74
0.87
1.03
1.37
1.53
1.65
1.96
0.93
0.95
1.02
1.09
1.15
1.27
1.40
1.08
1.14
1.18
1.23
1.33
1.44
1.61
2.00
2.52
2.84
3.09
3.43
1.68
1.89
2.33
2.94
3.30
3.57
4.00
0.47
0.49
0.53
0.58
0.63
0.70
0.79
0.59
0.61
0.65
0.70
0.74
0.83
0.94
1.13
1.50
1.65
1.86
2.16
1.01
1.18
1.40
1.84
2.07
2.27
2.65
0.17
0.18
0.20
0.21
0.22
0.26
0.29
1.40
1.46
1.52
1.57
1.70
1.82
2.07
2.56
3.19
3.60
3.91
4.33
2.20
2.47
3.03
3.78
4.26
4.60
5.13
1.56
1.57
1.57
1.58
1.59
1.59
1.62
1.57
1.57
1.58
1.59
1.60
1.61
1.61
1.62
1.64
1.66
1.67
1.67
1.62
1.62
1.63
1.65
1.67
1.68
1.68
1.65
1.66
1.66
1.67
1.69
1.69
1.71
1.67
1.67
1.67
1.68
1.69
1.70
1.70
1.71
1.72
1.74
1.75
1.75
1.70
1.70
1.72
1.73
1.75
1.75
1.75
35PN210
35PN230
35PN250
35PN270
35PN300
35PN360
35PN440
50PN250
50PN270
50PN290
50PN310
50PN350
50PN400
50PN470
50PN600
50PN700
50PN800
50PN1000
50PN1300
65PN400
65PN470
65PN600
65PN700
65PN800
65PN1000
65PN1300
Thickn
ess
mm
(in.)
Density
(kg/dm3
)
Resistivity
Ωㆍm
(×10-8
)
Watt per kilogram Watt per pound
W10/50 W15/50 W10/60 W15/60 W10/50 W15/50 W10/60 W15/60
B25 B50
Core Loss Magnetic Flux
Density. (T)
Note : Above values are not guaranteed.
W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.
Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method.
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지16 g6

17. 17
Electrical Steel
Typical Mechanical Property and Lamination Factor
Grade
0.35
(0.0138)
0.50
(0.0197)
0.65
(0.0256)
538
535
522
467
456
450
405
550
535
510
483
470
465
415
395
385
375
370
350
499
480
420
395
375
370
350
547
545
539
485
469
470
415
570
550
530
505
489
482
420
405
395
385
380
360
490
490
430
405
385
380
360
415
393
370
347
336
350
273
413
406
370
355
344
352
265
260
270
270
265
250
320
300
295
275
270
265
260
427
403
385
361
351
366
285
426
460
386
361
354
365
375
270
280
280
275
260
340
315
305
285
280
275
270
18
19
19
21
21
23
27
20
22
23
25
25
27
34
37
38
39
40
42
24
28
30
35
41
43
45
19
20
21
23
23
25
29
22
23
25
28
28
30
36
39
39
40
41
43
26
29
31
37
43
45
4
220
216
214
190
188
170
150
223
205
195
189
189
183
143
130
120
115
113
105
170
160
150
118
113
110
110
97.5
98.0
98.0
Thickness
mm (in.)
L C L C L C
Hardness
Hv1
Lamination
Factor
(%)
35PN210
35PN230
35PN250
35PN270
35PN300
35PN360
35PN440
50PN250
50PN270
50PN290
50PN310
50PN350
50PN400
50PN470
50PN600
50PN700
50PN800
50PN1000
50PN1300
65PN400
65PN470
65PN600
65PN700
65PN800
65PN1000
65PN1300
Note : 1. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
3. Specimens with C-6A coating are used for lamination factor test.
Tensile Stength
(N/mm2
)
Yield Point
(N/mm2
)
Elongation
(%)
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지17 g6

18. 18 www.posco.com
PNM-Core
The non-oriented electrical steel features even magnetic properties in the rolling direction and in other
directions. It is utilized as steel material for magnetic switches and improved in wear resistance and
residual magnetism.
Standard Size
Specification
Product
65PNM540
70PNM500
Grade
Thickness
mm (in.) Available Standard
Inside Diameter
mm (in.)
PNM-Core
(Coil)
Note: For non-standard sizes, please contact us
Width mm (in.)
Note : The above test is conducted in accordance to IEC404-2 (or JIS C 2550-2000), using as-sheared specimens
one half longitudinal and one half transverse to the rolling direction.
Grade
0.65
(0.0256)
0.70
(0.0276)
7.70
7.65
1.66
1.65
97.0
97.0
5.40
5.00
2.45
2.63
65PNM540
70PNM500
Magnetic properties and lamination factors.
Dimension & Shape Tolerance
Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.
Width
mm (in.)
0.65(0.0256)
0.70(0.0276)
0.65(0.0256)
0.70(0.0276)
±0.052(0.00205)
±0.056(0.00221)
±0.052(0.00205)
±0.056(0.00221)
0.04(0.0016)
and under
0.04(0.0016)
and under
+1.5(0.0591)
0
+1.5(0.0591)
0
1.0(0.0394)
and under
Thickness
mm (in.)
Thickness
Tolerance
mm (in.)
Thickness deviation in
transverse direction
mm (in.)
Width Tolerance
mm (in.)
Camber
(Length : 2m)
mm (in.)
1000(39.37)
and under
1000(39.37)
and under
0.65
(0.0256)
0.70
(0.0276)
950~1200
(37.40-47.24)
1000
(39.37)
1050
(41.34)
1100
(43.31)
508
(20)
Core Loss. Max (W15/50)
Watt per kilogram Watt per pound
Thickness
mm (in.)
Density
(kg/dm3
)
Magnetic Flux
Density.Min
T
(B50)
Lamination
Factor,
Min
(%)
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지18 g6

19. 19
Electrical Steel
Typical Mechanical Property and Lamination Factor
Grade
0.65
(0.0256)
0.70
(0.0276)
437
495
452
503
300
356
315
371
32
37
33
39
155
173
98.0
Thickness
mm (in.)
L C L C L C
Hardness
(Hv1)
Lamination
Factor
(%)
65PNM540
70PNM500
Tensile Stength
(N/mm2
)
Yield Point
(N/mm2
)
Elongation
(%)
Note : 1. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
2. Specimens with C-6A coating are used for lamination factor test.
Typical Electrical and Magnetic Property
Note : Above values are not guaranteed.
Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method.
Grade
0.65
(0.0256)
0.70
(0.0276)
7.70
7.65
42
44
1.80
1.72
3.72
3.63
2.27
2.18
4.81
4.78
0.82
0.78
1.69
1.65
1.03
0.99
2.18
2.17
1.65
1.61
1.73
1.70
65PNM540
70PNM500
Thickn
ess
mm
(in.)
Density
(kg/dm3
)
Resistivity
Ωㆍm
(×10-8
) Watt per kilogram Watt per pound
W10/50 W15/50 W10/60 W15/60 W10/50 W15/50 W10/60 W15/60
B25 B50
Core Loss
Magnetic Flux
Density.Min
(T)
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지19 g6

20. 20 www.posco.com
PNF-Core
PNF-Core features good magnetic properties in high frequency where eddy current loss extremely
increase.
Standard Size
Product
20PNF1500
0.20
(0.0080)
950~1200
(37.40-47.24)
1000
(39.37)
508
(20)
Grade
Thickness
mm (in.) Available Standard
Inside Diameter
mm (in.)
PNF-Core
(Coil)
Note: For non-standard sizes, please contact us
Width mm (in.)
Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000), using as-sheared specimens
one half longitudinal and one half transverse to the rolling direction.
W10/400 indicates the core loss at the frequency of 400 Hz, magnetic flux density of 1.0T.
B50 indicates magnetic flux density at 5000A/m
Grade
0.20
(0.0080)
7.65 15.0 6.80 1.62 93.0
Thickness
mm (in.)
Density
(kg/dm3
) Watt per kilogram Watt per pound
Lamination
Factor , Min(%)
20PNF1500
Specification
Magnetic properties and lamination factor.
Dimension & Shape Tolerance.
Width
mm (in.)
0.20
(0.0080)
0.20
(0.0080)
±0.020
±0.020
0.02(0.0008)
and under
0.03(0.0012)
and under
+1.5(0.0591)
0
+1.5(0.0591)
0
1.0(0.0394)
and under
Thickness
mm (in.)
Thickness
Tolerance
mm (in.)
Thickness deviation in
transverse direction
mm (in.)
Width Tolerance
mm (in.)
Camber
(Length : 2m)
mm (in.)
1000(39.37)
and under
1000(39.37)
and over
Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.
Core Loss , Max (W10/400) Magnetic Flux
Density.Min
T
(B50)
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지20 g6

21. 21
Electrical Steel
Typical Electrical and Magnetic Property
Grade
20PN
F1500
Note : Above values are not guaranteed.
W10/400 indicates the core loss at the frequency of 400 Hz, magnetic flux density of 1.0T.
Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method,
Core Loss
Watt per kilogram Watt per pound
W10/50 W15/50 W10/60 W15/60 W10/50
W10/400 W10/400
W15/50 W10/60 W15/60 B50
B25
50 1.24 2.71 1.53 3.28 12.8 0.56 1.23 0.69 1.49 5.76 1.55 1.66
Density
(kg/
dm3
)
Thickn
ess
mm
(in.)
0.20
(0.0080)
7.65
Resist
ivity
Ω
·
m
(
108
)
Magnetic Flux
Density.Min
(T)
20PNF1500
35PN210
35PN440
Comparison of Core Loss with Frequency
100
80
60
40
20
50 100 200 400 600 800 1000 1200
Core Loss
(at 1.0Tesla)
(W/kg)
PNF Steel has 30% better W10/400 compared to 35PN210
Motor of
Premium
Slim Spindle
motor of ODD
Typical Mechanical Property and Lamination Factor
Grade
0.20
(0.0080)
471 490 363 381 16 19 195 97.0
L C L C L C
Hardness
(Hv1)
Lamination
Factor
(%)
20PNF1500
Note : 1. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
2. Specimens with C-6A coating are used for lamination factor test.
Thickness
mm (in.)
Tensile Stength
(N/mm2
)
Yield Point
(N/mm2
)
Elongation
(%)
(Hz)
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지21 g6

22. 22 www.posco.com
PNA-Core
PNA-Core features lower core loss, high induction after SRA and good punchability.
Standard Size
Product
50PNA300
50PNA350
50PNA450
0.50
(0.0197)
950~1200
(37.40-47.24)
1000
(39.37)
1050
(41.34)
1100
(43.31)
508
(20)
Grade
Thickness
mm (in.) Available Standard
Inside Diameter
mm (in.)
PNA-Core
(Coil)
Note: For non-standard sizes, please contact us
Width mm (in.)
Specification
Magnetic properties and lamination factor
Dimension & Shape Tolerance.
Width
mm (in.)
0.5(0.0197)
0.5(0.0197)
± 0.040
(0.00158)
± 0.040
(0.00158)
0.03(0.0012)
and under
0.04(0.0016)
and under
+1.5(0.0591)
0
+1.5(0.0591)
0
1.0(0.0394)
and under
Thickness
mm (in.)
Thickness
Tolerance
mm (in.)
Thickness deviation in
transverse direction
mm (in.)
Width
Tolerance
mm (in.)
Camber
(Length 2m)
mm (in.)
1000(39.37)
and under
1000(39.37)
and under
Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.
Grade
7.75 3.0 1.36 1.70 96.0
0.50
(0.0197)
7.75 3.5 1.59 1.70 96.0
7.80 4.5 2.13 1.70 96.0
Thickness
mm (in.)
Density
(kg/dm3
) Watt per kilogram Watt per pound
Lamination
Factor , Min(%)
50PNA300
50PNA350
50PNA450
Core Loss, Max (W15/50) Magnetic Flux
Density.Min T(B50)
Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000), using as-sheared specimens
one half longitudinal and one half transverse to the rolling direction. Core loss and induction are measured after
stress relief annealing.
(Annealing condition : 750℃, 2Hr, under neutral atmosphere)
W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지22 g6

23. 23
Electrical Steel
1.8
1.7
2.5 3.0 3.5
B50(T)
High Induction
50PNA300 50PNA350 50PN400 50PN470
▲ △
▲
△
200
180
160
140
120
Hardness
(Hv1)
Punchability
Better
▲
△
Through higher induction and punchability, PNA-core features higher efficiency of products and longer
life of dies.
[High Efficient Refridgerator
Compressor Motor]
[High Efficient Aircon
Compressor Motor]
Typical Mechanical Property and Lamination Factor
Grade
0.50
(0.0197)
0.50
(0.0197)
0.50
(0.0197)
402
382
380
415
401
381
260
268
269
269
278
270
37
36
39
39
38
39
141
124
117
98.0
L C L C L C
Hardness
(Hv1)
Lamination
Factor
(%)
50PNA300
50PNA350
50PNA450
Note : 1. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
2. Specimens with C-6A coating are used for lamination factor test.
Thickness
mm (in.)
Tensile Stength
(N/mm2
)
Yield Point
(N/mm2
)
Elongation
(%)
Typical Electrical and Magnetic Property
Grade
50PNA300
50PNA350
50PNA450
Note : Above values are not guaranteed.
W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.
Tests were conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method, after stress reliefannealing.
(Annealing condition : 750℃ (1380℉) × 2 Hr under neutral at mosphere.)
Core Loss
Watt per kilogram Watt per pound
W10/50 W15/50 W10/60 W15/60 W10/50 W15/50 W10/60 W15/60 B25 B50
0.50
(0.0197)
0.50
(0.0197)
0.50
(0.0197)
37
33
25
1.29
1.36
1.73
2.70
3.05
3.89
1.72
1.83
2.22
3.71
3.91
5.11
0.59
0.62
0.79
1.35
1.38
1.77
0.78
0.83
1.01
1.68
1.77
2.32
1.66
1.67
1.63
1.73
1.74
1.72
Thickn
ess
mm
(in.)
Density
(kg/dm3
)
Magnetic Flux
Density.Min
(T)
W15/50(W/kg)
Magnetic Property and Puncturbility Comparison (PNA-Core VS PN-Core)
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지23 g6

24. 24 www.posco.com
PNS-Core
PNS-Core features lower core loss, high induction and good punchability with lower hardness
Standard Size
Product
35PNS250
Grade
Thickness
mm (in.) Available Standard
Inside Diameter
mm (in.)
PNS-Core
(Coil)
Note: For non-standard sizes, please contact us
Width mm (in.)
0.35
(0.0138)
950~1200
(37.40-47.24)
1000
(39.37)
1050
(41.34)
1100
(43.31)
508
(20)
Note: The above test is conducted in accordance to IEC60404-2 (or JIS C 2550-2000), using as-sheared specimens
one half longitudinal and one half transverse to the rolling direction.
W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.
Grade
0.35
(0.0138)
7.60 2.5 1.14 1.63 95.0
Thickness
mm (in.)
Density
(kg/dm3
) Watt per kilogram Watt per pound
Lamination
Factor , Min(%)
35PNS250
Specification
Magnetic properties and lamination factor.
Core Loss , Max (W15/50)
Dimension & Shape Tolerance.
Width
mm (in.)
0.35
(0.0138)
0.35
(0.0138)
± 0.035(0.00138)
± 0.035(0.00138)
0.02(0.0008)
and under
0.03(0.0012)
and under
+1.5(0.0591)
0
+1.5(0.0591)
0
1.0(0.0394)
and under
Thickness
mm (in.)
Thickness
Tolerance
mm (in.)
Thickness deviation in
transverse direction
mm (in.)
Width
Tolerance
mm (in.)
Camber
(Length : 2m)
mm (in.)
1000(39.37)
and under
1000(39.37)
and over
Note : The thickness deviation in width direction means the gap between the thickness of center and the one of part
15mm away from the edge part.
Magnetic Flux
Density.Min T(B50)
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25. 25
Electrical Steel
Typical Mechanical Property and Lamination Factor
Grade
35PNS250
Note : Above values are not guaranteed.
W15/50 indicates the core loss at the frequency of 50 Hz, magnetic flux density of 1.5T.
Tests are conducted in accordance with IEC60404-2 (or JIS C 2550-2000) method.
Core Loss
Watt per kilogram Watt per pound
W10/50 W15/50 W10/60 W15/60 W10/50 W15/50 W10/60 W15/60 B25 B50
0.35
(0.0138)
56 0.98 2.25 1.22 2.83 0.45 1.02 0.55 1.29 1.57 1.66
Thickn
ess
mm
(in.)
Density
(kg/dm3
)
Magnetic Flux
Density.Min
(T)
Typical Mechanical Property and Lamination Factor
Grade
0.35
(0.0138)
442 445 330 332 23 25 186 98.0
L C L C L C
Hardness
(Hv1)
Lamination
Factor
(%)
35PNS250
Note : 1. L : Specimens taken longitudinal to the rolling direction
C : Specimens taken transverse to the rolling direction
2. Specimens with C-6A coating are used for lamination factor test.
Thickness
mm (in.)
Tensile Stength
(N/mm2
)
Yield Point
(N/mm2
)
Elongation
(%)
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26. 26 www.posco.com
Types and Features of Surface Insulation
>> Surface Insulation
Inorganic
1.5~2.0
≥ 15
≥ 15
95.0
Not
recogniozed
Not
recogniozed
Not
recogniozed
-
-
-
- - excellent good excellent good Not
allowed
Curreent : 100～150A
Ar 99% flow10～20L/minSpeed
0.25～0.50mpm
ASTM A 717
SRA condition : 750°
C×2hrs. in DX rich gas
1.0MPa ± 0.05 in Pressure (JIS C 2550)
155℃×24hr in Air
750°
C×2hrs.
in DX rich gas
65 ℃, 95% humidity,
72 Hr
ISO 1519
ASTM D3359B
[0B (poor) ~ 5B
(excellent)] SRA:
R-134a/Freol @15C =
65g/100g
(130℃, 21day,0.45㎛
filter paper)
GO NO
Notice
Applied Spec
Composition
Thickness (um)
Resistivity
(Ωcm2/sheet)
Heat resistance
flaking after SRA
Weathering (powdering)
Adhesion
(mmФ)
Resistance
to
refrigerants
Weldability
Lamination Factor (%)
Note: 1) Please designate surface insulation according to usage. Regarding coating properties, please contact us.
2) The coating thickness value and the resistivity is typical value, not guaranteed.
General
Eco-
friendly
0A GS
General
C-6A
Eco-friendly
NS NM NT
C-9A
GO NO
Brfore SRA
After SRA
Brfore SRA
(Mandrel bend
tester)
30
Inorganic
1.5~2.0
≥ 15
≥ 15
95.0
Not
recogniozed
Not
recogniozed
Not
recogniozed
-
-
-
30
Inorganic
+organic
0.5~1.0
≥ 0.5
≥ 0.1
98.0
Not
recogniozed
Not
recogniozed
Not
recogniozed
5B
Not
recogniozed
Not
recogniozed
10
Inorganic
+organic
1.2~1.8
≥ 5.0
≥ 0.5
98.0
Not
recogniozed
Not
recogniozed
Not
recogniozed
5B
Not
recogniozed
Not
recogniozed
10
Inorganic
+organic
0.5~1.0
≥ 0.5
≥ 0.1
98.0
Not
recogniozed
Not
recogniozed
Not
recogniozed
5B
Not
recogniozed
Not
recogniozed
10
Inorganic
+organic
1.2~1.8
≥ 5.0
≥ 0.5
98.0
Not
recogniozed
Not
recogniozed
Not
recogniozed
5B
Not
recogniozed
Not
recogniozed
10
Inorganic
+organic
5.0~7.0
≥ 100
SRA Not Accepted
97.0
SRA Not
Accepted
SRA Not
Accepted
Not
recogniozed
5B
-
-
20
After
SRA(Cross cut
tester)
Change of
surface
Change of
weight
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27. 27
Electrical Steel
>> Stress Relief
Annelaing
If the annealing temperature is too low, it is difficult to acquire adequate magnetic properties and if the
temperature is too high, it may erode surface insulation and degrade insulation properties. The
optimum annealing temperature for grain-oriented electrical steel is 780°
C to 840°
C and 750°
C to 800°
C for non-oriented electrical steel for improved magnetism.
Stress relief annealing is a process that is carried out to acquire desired magnetic properties of electrical
steel sheets by relieving stress generated in the process of shearing and punching at a proper
temperature for a certain period of time.
Annealing Temperature
Annealing time means the in-furnace time of materials at the highest temperature during the annealing
process. During this time, the materials in the furnace should be evenly heated. The annealing time
varies depending upon amount of materials or type of furnace. Generally, the annealing time is
between 1.5 to 2.5 hours.
Annealing Time
Abrupt heating and cooling must be avoided to prevent any deformation of the iron core. Slow cooling
must be applied until it reaches 300~350°
C before air cooling is applied.
Heating and Cooling Speed
Furnace atmosphere should be controlled to minimize carburization or oxidization which can diminish
magnetic properties. Therefore a pure nitrogen atmosphere is ideal and the dew point of gas should
be maintained as low as possible, below 0°
C is adequate. The oil used in shearing and punching
should be removed completely. Otherwise both sides of piled-up core will be damaged during the
annealing process, deteriorating the work capacity.
Furnace Atmosphere
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28. 28 www.posco.com
Water is condensed on the steel surface in certain temperature and humidity in store place and steel is likely to get
rusty.
Ex) In a place of 25℃, humidity 80%, water is condensed when temp decrease to 22℃.
Condensed Water on steel surface Graph according to Humidity and Temperature
Reference for rust
10%
20%
30%
40%
50%
60%
70%
80%
90%
450
400
350
300
250
200
150
100
50
0
0
5
10
15
20
25
30
35
40
45
Humidity(%)
Temp(℃)
Dew
Point
Condensed
Water
Zone
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29. 29
Electrical Steel
>> Relation Among Weight, Outside
Diameter And Width of Coil
Note : Inner diameter is 20inch (508mm)
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30. 30 www.posco.com
>> Major International
Standards
Grain-Oriented Electrical Steel
Thickness
mm
(inch)
POSCO
(2006)
W/kg
17/50
JIS C 2553
(2000)
W/kg
17/50
ASTM
(1999)
W/kg
17/60
EN10107
(1995)
W/kg
17/50
0.23
(0.0091)
0.27
(0.0106)
0.30
(0.0118)
23PHD085 0.85
23PH090 0.90
23PH095 0.95
23PH100 1.00
27PHD090 0.90
27PH095 0.95
27PH100 1.00
27PH110 1.10
27PG120 1.20
27PG130 1.30
30PH100 1.00
30PH105 1.05
30PG130 1.30
30PG140 1.40
35PG145 1.45
35PG155 1.55
23R085 0.85
23P090 0.90
23P095 0.95
23P100 1.00
27R090 0.90
27P100 1.00
27P110 1.10
27G120 1.20
27G130 1.30
30P105 1.05
30P110 1.10
30P120 1.20
30G130 1.30
30G140 1.40
35G145 1.45
35G155 1.55
23Q054 1.19
23P060 1.32
27P066 1.46
27H074 1.63
30H083 1.83
35H094 2.07
M100-23P 1.00
M103-27P 1.03
M130-27S 1.30
M105-30P 1.05
M111-30P 1.11
M117-30P 1.17
M140-30S 1.40
M150-35S 1.50
0.35
(0.0138)
Note : The core loss of POSCO products is the maximum guarantee value at 1.7T and 50Hz
The product standards are subject to change. Please be sure to confirm the recent standards when
making orders or to consult our associates.
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31. Non-Oriented Electrical Steel
Thickness
mm
(inch)
35PN210 2.10
35PN230 2.30
35PN250 2.50
35PN270 2.70
35PN300 3.00
35PN360 3.60
35PN440 4.40
35A210 2.10
35A230 2.30
35A250 2.50
35A270 2.70
35A300 3.00
35A360 3.60
35A440 4.40
36F145 3.20
36F155 3.42
36F175 3.86
36F205 4.52
M235-35A 2.35
M250-35A 2.50
M270-35A 2.70
M300-35A 3.00
POSCO
(2006)
W/kg
15/50
JIS C 2552
(2000)
W/kg
15/50
ASTM
(1999)
W/kg
15/60
EN10106
(1995)
W/kg
15/50
0.35
(0.0138)
50PN250 2.50
50PN270 2.70
50PN290 2.90
50PN310 3.10
50PN350 3.50
50PN400 4.00
50PN470 4.70
50PN600 6.00
50PN700 7.00
50PN800 8.00
50PN1000 10.00
50PN1300 13.00
50A230 2.30
50A250 2.50
50A270 2.70
50A290 2.90
50A310 3.10
50A350 3.50
50A400 4.00
50A470 4.70
50A600 6.00
50A700 7.00
50A800 8.00
50A1000 10.00
50A1300 13.00
47F165 3.64
47F180 3.97
47F200 4.41
47F210 4.63
47F240 5.29
47F400 8.82
47F450 9.92
M250-50A 2.50
M270-50A 2.70
M290-50A 2.90
M310-50A 3.10
M350-50A 3.50
M400-50A 4.00
M470-50A 4.70
M600-50A 6.00
M700-50A 7.00
M800-50A 8.30
M1000-50A 10.00
0.50
(0.0197)
Note : The core loss of POSCO products is the maximum guarantee value at 1.5T and 50Hz.
31
Electrical Steel
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32. 32 www.posco.com
>> Unit Conversion Tables,
The International System
of Units(SI)
Permeability
1 7.96 x 10 2.02
Oersted A/m A/in
1 Oersted
1.256 x 10-2
1 2.54 x 10-2
1 Ampere per Meter
(A/m)
4.95 x 10-1
3.94 x 10 1
1 Ampere per Inch
(A/in)
Magnetic Induction
1 10-4
10-4
6.45
Gauss Tesla WB/m2
line/in2
1 Gauss(G)
104
1 1 6.45 x 104
1 Tesla(T)
104
1 1 6.45 x 104
1 Weber per Square
Meter(Wb/m2
)
1.55 x 10-1
1.55 x 10-5
1.55 x 10-5
1
1 Line per Square
Inch(Line/in2
)
Core Loss
1 4.54x10-1
W/kg W/lb
1 Watt Per
Kilogram(W/kg)
2.204 1
1 Watt Per
Pound(W/lb)
전기강판영문내지최종1113 2010.11.13 2:27 PM 페이지32 g6

33. >> Packaging/Marking
PACKAGING / MARKING
MARKING
Standard packing for domestic sales Standard packing for export sales
Domestic Export
33
Electrical Steel
전기강판영문내지최종1113 2010.11.13 2:28 PM 페이지33 g6

34. 전기강판영문내지최종1113 2010.11.13 2:28 PM 페이지34 g6

35. MANUFACTURING PROCESS AND FACILITIES · 4
SPECIFICATION & MAIN APPLICATION · 6
GRAIN-ORIENTED ELECTRICAL STEEL · 8
NON-ORIENTED ELECTRICAL STEEL · 14
SURFACE INSULATION · 26
STRESS RELIEF ANNEALING · 27
RELATIONS AMONG WEIGHT, OUTSIDE DIAMETER AND WIDTH OF COIL · 29
MAJOR INTERNATIONAL STANDARDS · 30
UNIT CONVERSION TABLES, THE INTERNATIONAL SYSTEM OF UNITS(SI) · 32
PACKAGING/MARKING · 33
GLOBAL NETWORK · 34
Contents
>>>
전기강판영문표지1113 2010.11.13 1:37 PM 페이지2 g6