| Cold
Rolled Steel Sheets & Strips Conforming to IS 513/1994 |
|
CR Strips Mild Steel
|
1) Ordinary (O)
2) Drawing (D)
3) Deep Drawing (D.D)
4) Extra Deep Drawing (E.D.D)
5) Hard (H)
6) Half Hard (1/2 H)
7) Quarter Hard (1/4 H)
|
|
Carbon Steel
|
Medium and High Carbon
|
|
Specifications
|
IS 513/BS 1449/JIS G3141
DIN 1623
|
|
Strip
|
Width : 12.5 mm to 550 mm
Thickness : 0.35 mm to 2 mm
|
|
Coil weight
|
2 kg - 7 kg per mm of strip width
(upto 1 kg/mm on request)
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|
Coil Internal Dia
|
508 mm (400 mm can be supplied in slit coils)
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|
Cut to length sheets
|
Length : 600 mm to 3000 mm
Width : 100 mm to 550 mm
Thickness : 0.35 mm to 2 mm
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|
Surface finish
|
Bright/ Matt
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|
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Product Specialty
Thanks to the state-of-the-art process and technology, Nezone
Strips Limited offers CR strips / sheets of best quality that
can meet demanding applications. The company offers the following
product advantages :
- Superior shape control and consistent flatness, a special
feature of our 4 Hi / Mill.
- Excellent surface quality.
- Close thickness tolerance with non contact radio active
gauges.
- Wide range of grades from full hard to non ageing extra
deep drawing.
- Medium & High carbon special steel.
- Custom built thickness and width combination to minimise
wastage at customers end.
- Choice of surface finish Matt/ Bright.
Product Testing & Quality Assurance
The quality department is fully equipped with following equipments
to carry out variety of test required.
- Rockwell Hardness Tester and Vickers Hardness Tester.
- Universal Tensile Testing machine.
- Erichsen Cupping Tester.
- Fully equipped quality laboratory for chemical properties.
- Bend Testing Machine.
All finished products are tested for various quality parameters
like hardness, tensile strength, elongation, Erichson value
and only those that meet the required specifications are dispatched
to customers with proper packing in polythene and HDPE/ hessian
cloth wrapping / wooden pallets after applying rust preventive
oil.
The coil number and other details are marked clearly with
stickers on the coil.
Special Product
Silicon Steel C.R.N.O / C.R.C.A for electrical lamination/
stamping in standard Watt Loss/ Kg.
Applications of C.R. STRIPS/SHEETS
- Automobiles
- Refrigerators & Air-conditioners
- Washing machines & Geysers
- Oil barrels & containers
- Bicycles
- Bearings
- Cables
- Precision Tubes
- Transformers
- Electronics & Electrical Components
- Furniture / Office Equipment
- C. F. Section & Shutters
- Domestic Appliances
- Computers
- General Engineering
- Electrical Lamination
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|
Specifications
|
Grade
|
Chemical
Composition (%max) |
Mechanical Properties
|
|
C%
Max
|
Mn%
Max
|
Si%
Max
|
P%
Max
|
Tensile strength Kgf / mm˛
|
Elong (%)
min (a)
|
Hardness
HRB/HV
VPN Max
|
|
I. Ordinary
IS 513/1986
|
|
0
|
0.15
|
0.60
|
0.055
|
0.055
|
-
|
-
|
-
|
|
II.Drawing
IS 513/1986
|
|
D
|
0.12
|
0.50
|
0.040
|
0.040
|
28-42
|
28
|
117 HV
|
|
BS 1449(Part 1)/1983
|
|
CR-4
|
0.12
|
0.60
|
0.050
|
0.050
|
29 min
|
-
|
|
|
JIS G3141/1977
|
|
SPCC
|
0.12
|
0.50
|
0.045
|
0.040
|
28 min
|
32-39(b)
|
|
|
DIN 1623(Part 1)/1983
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|
st12
|
0.10
|
-
|
-
|
-
|
28-42
|
28(d)
|
|
|
III. Deep Drawing
IS 513/1986
|
|
DD
|
0.10
|
0.45
|
0.035
|
0.035
|
28-38
|
32
|
105 HV
|
|
BS 1449(Part 1)/1983
|
|
CR-3
|
0.10
|
0.50
|
0.040
|
0.040
|
29 min
|
25 (c)
|
|
|
JIS G3141/1977
|
|
SPCD
|
0.10
|
0.45
|
0.035
|
0.035
|
28 min
|
34-41(b)
|
|
|
DIN 1623(Part 1)/1983
|
|
RRSt-13
|
0.10
|
-
|
-
|
-
|
28-38
|
34 (d)
|
|
|
IV. Extra Deep Drawing
IS 513/1986
|
|
EDD
|
0.08
|
0.40
|
0.030
|
0.030
|
28-36
|
36
|
95 HV
|
|
BS 1449(Part 1)/1983
|
|
CR-2
|
0.08
|
0.45
|
0.035
|
0.030
|
29 min
|
27 (c)
|
|
|
JIS G3141/1977
|
|
SPCE
|
0.08
|
0.40
|
0.030
|
0.030
|
28 min
|
36-43 (b)
|
|
|
DIN 1623(Part 1)/1983
|
|
RRSt-14
|
0.08
|
-
|
-
|
-
|
28-36
|
38(d)
|
|
|
V Non-ageing Extra Deep Drawing
BS 1449(Part 1)/1983
|
|
CR-1
|
0.08
|
0.45
|
0.030
|
0.025
|
29 min
|
29 (c)
|
95 HV
|
|
Silicon Steel
|
|
C.R.N.O/ C.R.C.A
|
.02
|
.30
|
.60
|
.02
|
-
|
-
|
62 HRB
|
|
|
Notes :
a. Gauge length IS 513 : 80 mm and width
20mm min. BS 1449 : 200 mm JIS
G3141 : 50mm DIN
1623:80mm.
b.
Value of elongation indicated depends on thickness.
c. For thickness less than 1.0 mm the percentage elongation
is reduced by 1 unit for each 0.25 mm reduction
in thickness.
d.
For thickness less than or equal to 0.7 mm minimum values
lower by 2 units are permitted for elongation
after fracture.
ERICHSON VALUES (All dimensions in mm)
|
|
Specification
|
Grade
|
Thickness |
|
0.50
|
0.60
|
0.70
|
0.80
|
0.90
|
1.00
|
1.10
|
1.20
|
1.30
|
1.40
|
1.50
|
1.60
|
1.70
|
1.80
|
1.90
|
2.00
|
|
IS 513
|
D
|
8.2
|
8.5
|
8.9
|
9.2
|
9.5
|
9.8
|
10.1
|
10.3
|
10.5
|
10.7
|
10.9
|
11.1
|
11.2
|
11.3
|
11.3
|
11.3
|
|
BS 1449
|
CS4
|
8.3
|
8.7
|
9.0
|
9.3
|
9.6
|
9.8
|
10.0
|
10.2
|
10.4
|
10.5
|
10.7
|
10.8
|
11.0
|
11.1
|
11.2
|
11.3
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|
JIS G3141
|
SPCC
|
7.8
|
8.4
|
8.8
|
9.1
|
9.4
|
9.6
|
-
|
10.0
|
-
|
10.3
|
-
|
10.5
|
-
|
-
|
-
|
-
|
|
DIN 1624
|
St2
|
8.4
|
8.7
|
9.0
|
9.3
|
9.6
|
9.9
|
10.2
|
10.4
|
10.6
|
10.8
|
11.0
|
11.2
|
11.4
|
11.6
|
11.7
|
11.9
|
|
DIN 1623
|
St12
|
8.8
|
9.0
|
9.2
|
9.4
|
9.6
|
9.8
|
9.9
|
10.1
|
10.2
|
10.3
|
10.5
|
10.6
|
10.7
|
10.8
|
11.0
|
11.1
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|
IS 513
|
DD
|
8.8
|
9.1
|
9.4
|
9.7
|
9.9
|
10.2
|
10.5
|
10.7
|
10.9
|
11.1
|
11.3
|
11.5
|
11.6
|
11.7
|
11.8
|
11.9
|
|
IS 513
|
EDD
|
9.2
|
9.4
|
9.8
|
9.9
|
10.3
|
10.6
|
10.8
|
10.8
|
11.25
|
11.4
|
11.6
|
11.8
|
11.9
|
12.1
|
12.2
|
12.35
|
|
BS 1449
|
CS3
|
8.9
|
9.3
|
9.6
|
9.9
|
10.2
|
10.4
|
10.6
|
10.8
|
11.0
|
11.2
|
11.3
|
11.4
|
11.6
|
11.7
|
11.8
|
11.9
|
|
JIS G3141
|
SPCE
|
8.2
|
8.8
|
9.2
|
9.5
|
9.8
|
10.0
|
-
|
10.4
|
-
|
10.7
|
-
|
10.9
|
-
|
-
|
-
|
-
|
|
DIN 1624
|
St3
|
9.0
|
9.3
|
9.6
|
9.9
|
10.2
|
10.4
|
10.7
|
10.9
|
11.1
|
11.3
|
11.5
|
11.7
|
11.8
|
12.0
|
12.1
|
12.2
|
|
DIN 1623
|
St13
|
9.5
|
9.8
|
10.0
|
10.2
|
10.4
|
10.5
|
10.7
|
10.7
|
11.0
|
11.1
|
11.2
|
11.3
|
11.5
|
11.6
|
11.7
|
11.8
|
|
IS 513
|
EDD
|
9.2
|
9.5
|
9.8
|
10.0
|
10.3
|
10.6
|
10.8
|
11.0
|
11.2
|
11.4
|
11.6
|
11.8
|
11.9
|
12.1
|
12.2
|
12.3
|
|
BS 1449
|
CS2
|
9.5
|
9.9
|
10.2
|
10.5
|
10.7
|
10.9
|
11.1
|
11.3
|
11.4
|
11.6
|
11.7
|
11.9
|
12.0
|
12.1
|
12.2
|
12.3
|
|
JIS G3141
|
SPCE
|
8.6
|
9.2
|
9.6
|
9.9
|
10.2
|
10.4
|
-
|
10.8
|
-
|
11.1
|
-
|
11.3
|
-
|
-
|
-
|
-
|
|
DIN 1624
|
St4
|
9.6
|
9.9
|
10.2
|
10.4
|
10.7
|
10.9
|
11.1
|
11.3
|
11.6
|
11.7
|
11.9
|
12.1
|
12.2
|
12.3
|
12.4
|
12.5
|
|
DIN 1623
|
St14
|
9.8
|
10.0
|
10.2
|
10.4
|
10.6
|
10.8
|
10.9
|
11.1
|
11.2
|
11.3
|
11.5
|
11.6
|
11.7
|
11.8
|
11.9
|
12.1
|
|
BS 1449
|
CS1
|
9.7
|
10.1
|
10.4
|
10.7
|
10.9
|
11.1
|
11.3
|
11.5
|
11.6
|
11.8
|
11.9
|
12.1
|
12.2
|
12.3
|
12.4
|
12.5
|
|
|
Hardness of
different tempers for 'O' grade (IS 513/86)
|
|
Temper Designation
|
Hardness
|
|
HRB*
|
HV/VPN
|
|
Min.
|
Max.
|
Min.
|
Max.
|
|
Hard (H)
|
85
|
-
|
165
|
-
|
|
Half Hard (1/2 H)
|
75
|
85
|
137
|
165
|
|
Quarter Hard (1/4 H)
|
60
|
75
|
110
|
137
|
|
Skin passed (S.P.)
|
53
|
70
|
100
|
117
|
|
Annealed (A)
|
40
|
60
|
90
|
110
|
|
|
Specifications
for medium and high carbon steels
|
|
Chemical composition % max
|
Mechanical Properties Hardness (VPN)
|
|
Annealed
|
Annealed & Rolled
|
|
Grade
|
C
|
Mn
|
Si
|
S
|
P
|
Cr
|
(Max)
|
(Min)
|
|
MC11
|
0.35'-0.45
|
0.50-0.70
|
0.15-0.35
|
0.04
|
0.04
|
-
|
160
|
290
|
|
MC12
|
0.50-0.60
|
0.60-0.90
|
0.15-0.35
|
0.04
|
0.04
|
-
|
165
|
350
|
|
HC13
|
0.65-0.75
|
0.50-0.90
|
0.10-0.35
|
0.04
|
0.04
|
-
|
180
|
350
|
|
HC14
|
0.75-0.90
|
0.50-0.90
|
0.10-0.35
|
0.04
|
0.04
|
-
|
190
|
350
|
|
HC15
|
0.90-1.05
|
0.30-0.60
|
0.10-0.35
|
0.04
|
0.04
|
-
|
200
|
350
|
|
HC21
|
1.10-1.30
|
0.30-0.60
|
0.25
|
0.03
|
0.03
|
0.2-0.5
|
225
|
350
|
|
|
Tolerances on nominal thickness
|
|
Nominal thickness (mm)
|
Nominal width (mm)
|
|
Over
|
Upto and including
|
Less than 250
|
Above 250 but below 550
|
|
0.30
|
0.40
|
±0.03
|
± 0.04
|
|
0.40
|
0.80
|
± 0.04
|
± 0.05
|
|
0.80
|
1.20
|
± 0.05
|
± 0.06
|
|
1.20
|
2.00
|
± 0.06
|
± 0.08
|
|
2.00
|
3.20
|
± 0.08
|
± 0.09
|
|
|
Tolerances on width
|
|
Nominal thickness (mm)
|
Width upto 250
|
Above 250
upto 500
|
Above 500
upto 550
|
|
Over
|
Upto
|
|
|
0.6
|
± 0.15
|
± 0.20
|
± 0.20
|
|
0.6
|
1.6
|
± 0.20
|
± 0.20
|
± 0.25
|
| | |
