Manufacturer of CRGO Transformer Cores,CRGO Built-up Magnetic Cores,CRGO R... Page 1 of 3
quicknavigation Nomax : Manufacturers of CRGO Strip Lamination,CRGO Slit Coil to Customer Specifications in required Grade of Materials ,Grain Oriented Steel Lamination and CRGO Toroidal and Strip W ound Cores in Kolkata, India.
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Im portant Electrical Pr operties of CRGO CRGO Cold Cold Rolled Grain Oriented Steel Convention al & CRGOHi - B Grades Core Loss Details of Popularly used CRGO C old Rolled Grain Oriented steel Grades. Manufacturing mills of CRGO Electrical Steel guarantee the core loss figure at fl density of 1.5 Tesla in case of CRGO Conventional Grain Oriented steel and at 1.7 Tesla in case of CRGO of CRGO HI-B-Steel and CRGO HI -B-LS -B-LS Electrical Steel.
Click here to see our CRGO &
Thickness A ssume d
0.23
23ZDKH90
KG/DM3 7.65
0.23 -0.009
23ZH90
0.9
1.88
23ZH95
0.95
1.88
M-0H
1
1.88
0.71
1.06
1.8
M-2
0.75
1.12
1.8
M-3
0.79
1.04
1.8
0.95
1.88
27ZH95
0.95
1.88
27ZH100
1
1.8
M-0H
1.03
1.88
1.09
1.88
MM
M-1
Important Electrical Prope rties of CRGO ...
0.27 -0.0106
27ZDKH95
M-1H more
Important Electrical Prope rties of CRNGO ...
0.3 -0.0118
At 1 . 5 T
7.65
7.65
A t 1. 7T 0.9
1.88
M-3
0.83
1.21
1.8
M-4
0.89
1.27
1.8
30ZH100
1
1.88
M-0H
1.05
1.88
M-1H
1.11
1.88
1.17
1.88
M-2H Click here to see production processes of CRGO
7.65
Maximum Co re L os s
Minimum Induction at 800 A / mT
CR GO Gr ade
CRNGO availibility...
7.65
M-3
0.85
1.23
1.8
M-4
0.9
1.32
1.8
M-5
0.97
1.39
1.8
M-1H
1.16
1.88
M-2H
1.16
1.88
M-3H
1.28
1.88
1.45
1.8
M-5
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1.01
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Manufacturer of CRGO Transformer Cores,CRGO Built-up Magnetic Cores,CRGO R... Page 2 of 3
Application of CRGO & CRNGO
M-6
1.11
1.57
1.8
electrical steel
Technical Details of CRGO
more
CRGO or Cold Rolled Grain Oriented Electrical Steel is av ailable in various grade (Generally called M3-0.23, M4-0.27, M5-0.30 & M6-0.35). Followed link below "more grades of CRGO" for M ajor international standards such as Japanese (JIS) American (ASTM), German (DIN) and British Standards which specify CRGO Col Rolled Grain Oriented Steel Grade. Conventional CRGO grades generally M3,M4,M5 and M6 are used regularly for Transformer Cores in Transformers. However recently due to environmental protection, energy savings are becoming a very important factor and minimizing core loss in Transformers is becoming a must. Nippon Steel Corporation and other CRGO producing mills has come out with low loss Hi-B materials, which guarantee low Watt Losses at 1.5 Tesla flux density. Such materials are called Hi-B CRGO materials. Above table gives magnetic propertie of CRGO Hi-B material.Popular CRGO Hi-B grades used are 23 MOH & 27 MOH and 30 MOH. Click here for more grades of CRGO
Imp ortant physical propert ies of CRGO Density gm/c3 Silicon content % Resistivity micro Ohm-centimeter
7.65 3.10 48.00
Ulti mate Tensi le Stren gth 0° to Ro lling Dir ec tion Kg/mm 2
32.60
Ultimate Tensile Strength 90° to Rolling Direction Kg/mm2 Stacking factor % M4 (.27 mm)
38.20 96.00
Stacking factor % M5 (.30 mm)
96.50
Stacking factor % M6 (.35 mm) 97.00 CRGO materials come either in the form of coils or sheets. Given below the details of CRGO dimensions and tolerances as per JIS C 3553.
Dimensions and Tolerances of CRGO
CRGO COILS
Sheets
0.18 mm (0.0071 in. ) 0.20 mm (0.0079 in.), 0.23 mm (0.0091 in. ) Thickness 0.27 mm (0.0106 in.), 0.30 mm (0.0118 in. ) 0.35 mm (0.0138 in.) 914 mm (36 in.), and 1000 mm (39 Width in. ) (Standard width available with from 50 mm(2 in.), to 1.050mm (41 range) in. ) Inside Coil Diameter 508 mm (20 in. ) 0.30 mm (0.0118 in.), 0.35 mm Thickness (0.0138 in. ) 914 mm (36 in.), and 1000 mm (39 Width in. ) Length will be available according to Length negotiation
CRGO Toleranc es in Dimension s & Shape of CRGO conform to JI S C 2553. TOLERANCE
Width mm
Thickness mm
150 or
0.18 0.20 0.23
Thickness mm
+0.02 +0.02 +0.02
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Deviation of thickness in transverse direction mm
Width mm
Camber in any 2 metres (Slit Products) mm
Shear Burr mm
+0.20 0.02 or
9/1/2011
Manufacturer of CRGO Transformer Cores,CRGO Built-up Magnetic Cores,CRGO R... Page 3 of 3
under
over 150 to 400
over 400 to 750
over 750
0.27 0.30 0.35 0.18 0.20 0.23 0.27 0.30 0.35 0.18 0.20 0.23 0.27 0.30 0.35 0.18 0.20 0.23 0.27 0.30 0.35
+0.03 +0.03 +0.03 +0.02 +0.02 +0.02 +0.03 +0.03 +0.03 +0.02 +0.02 +0.02 +0.03 +0.03 +0.03 +0.02 +0.02 +0.02 +0.03 +0.03 +0.03
under
0.02 or under
+0.30
1.0 or under 0.03 or under
+0.50
0.03 or under
+0.6 0
0.04 or under
Note : Stipulation of camber shall be applied only for the steel strips (width 75mm over).
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9/1/2011
