Specifications:
Hindalco offers circles, also known as flat circular sheets, in a variety of diameters and thicknesses to meet specific needs. Extensively used in the manufacture of pressure cookers, non-stick cookware, coated cookware, cans, etc., they have earned the trust of many leading brands.
Continuous upgrades and process improvement enable us to keep pace with the demands of our ever-growing clientele.
| Dimensions |
| Parameter
|
Range
|
Tolerance
|
|
Thickness
for circles (mm)
|
0.71
6.35
|
for
0.71 to 1.4 +/-0.08
|
|
for
1.41 to 2.5 +0.1, -0.13
|
| for
2.51 to 4.0 +/-0.13
|
| for
4.01 to 5.00 +/-0.15
|
| for
5.01 to 6.35 +/-0.20
|
|
Thickness
for ovals (mm)
|
1.75
3.00
|
for
1.75 to 2.5 +0.1, -0.13
|
| for
2.51 to 3.00 +/-0.13
|
|
Diameter
(mm)
|
102
1250
|
(a)
sheared circles +2, -0
|
| (b)
punched circles +0.5, -0
|
|
Earring
|
<5%
for 'O' temper
<9% for H12, H14, H16, H18
|
-
|
| Mechanical
properties |
| Alloy
(AA)
|
Temper
|
UTS
(mpa)
|
%E
(min)
(50-mm gauge length)
|
| Min
|
Max
|
|
1200
|
O
|
70
|
110
|
20
|
|
1200
|
H18
|
140
|
-
|
2
|
|
8011
|
O
|
85
|
120
|
20
|
|
8011
|
H18
|
175
|
-
|
2
|
| Die
sizes |
| For
circles |
| Thickness
(mm)
|
Diameter
(mm)
|
|
<
2.00
|
normal:
190.5, 197, 203, 216, 222, 229, 235,
238,
241, 245, 247.5, 250, 254, 267, 273,
279, 280, 292,
300, 305, 307, 330
|
|
2.00
6.35
|
normal:
250, 255, 263, 275, 285, 295, 298, 300,
305,
310, 312, 247.5, 250, 315, 325, 330,
332.5, 335,
336, 350, 355, 358, 360, 365, 370, 375,
380, 385, 387,
390, 395, 406, 410, 412, 415, 416, 430,
435, 456, 465,
484, 485, 489, 490, 517
|
| For
ovals |
|
1.75
3.00
|
normal:
198x211, 242.5x159.5, 144x157, 160x173
|
| Mechanical
properties |
| Alloy
(AA)
|
Temper
|
%E
(min)
(at 50 mm
gauge length)
|
UTS
(mpa)
|
Bend
test:
radius of bend
(T=material thickness)
|
| Min
|
Max
|
|
1050
|
O
|
29
|
55
|
95
|
close
|
|
H14
|
6
|
95
|
125
|
1/2T
|
|
H18
|
4
|
125
|
-
|
1T
|
|
1070
|
O
|
29
|
95
|
-
|
close
|
|
H14
|
6
|
95
|
120
|
1/2T
|
|
H18
|
4
|
120
|
-
|
1T
|
|
1200
|
O
|
29
|
70
|
110
|
close
|
|
H14
|
5
|
105
|
140
|
1/2T
|
|
H16
|
4
|
125
|
150
|
1/2T
|
|
H18
|
3
|
140
|
-
|
1T
|
|
3003
|
O
|
25
|
90
|
130
|
close
|
|
H14
|
5
|
130
|
180
|
1/2T
|
|
H16
|
4
|
150
|
195
|
1T
|
|
H18
|
3
|
170
|
-
|
3T
|
|
3103
|
O
|
25
|
90
|
130
|
close
|
|
H14
|
5
|
130
|
180
|
1/2T
|
|
H16
|
4
|
150
|
195
|
1T
|
|
H18
|
3
|
170
|
-
|
3T
|
|
8011
|
O
|
25
|
85
|
120
|
close
|
|
H14
|
5
|
125
|
160
|
1/2T
|
|
H16
|
4
|
150
|
180
|
1T
|
|
H18
|
3
|
175
|
-
|
3T
|
|
3103DAQ*
|
O
|
24
|
90
|
130
|
close
|
|
3103SDAQ**
|
O
|
24
|
90
|
130
|
close
|
|
H14
|
5
|
130
|
180
|
1/2T
|
|
5251
|
O
|
16
|
175
|
215
|
close
|
|
6082
|
O
|
14
|
150
|
175
|
1T
|
|
3103
(ovals)
|
H14
|
3
|
130
|
180
|
1/2T
|
|
**
For thickness 2.6 mm and less, elongation
values are for guidance only and not
guaranteed. For this purpose bend test
as specified may be carried out.
|
|
*
Grain size of 3103DDAQ (deep drawn anodising
quality) is <= 100 microns
|
|
**
Grain size of 3103SDAQ (shall drawn
anodising quality) is <= 150 microns
|
| Chemical
composition |
| Alloy
(%)
|
AA
1050
|
AA
1070
|
AA
1200
|
AA
3003
|
AA
3103
|
AA
8011
|
AA
5251
|
AA
6082
|
| Fe |
0.40
|
0.25
|
1.00
|
0.70
|
0.70
|
0.6
1.0
|
0.50
|
0.50
|
| Si |
0.25
|
0.20
|
(Fr
+ Si)
|
0.60
|
0.50
|
0.5
0.9
|
0.40
|
0.70
1.30
|
| Mg |
0.05
|
0.03
|
-
|
-
|
0.30
|
0.05
|
1.70
2.40
|
0.60
1.20
|
| Mn |
0.05
|
0.03
|
0.05
|
1.00
1.50
|
0.90
1.50
|
0.20
|
0.10
0.50
|
0.40
1.00
|
| Cu |
0.05
|
0.04
|
0.05
|
0.05
0.20
|
0.10
|
0.10
|
0.20
|
0.20
|
| Zn |
0.05
|
0.04
|
0.10
|
0.10
|
0.20
|
0.20
|
0.20
|
0.20
|
| Ti |
0.03
|
0.03
|
0.05
|
0.10
(Ti + Zr)
|
0.10
(Ti + Zr)
|
0.08
|
0.20
|
0.10
|
| Cr |
-
|
-
|
-
|
-
|
0.10
|
0.05
|
0.20
|
0.25
|
| Each (others) |
0.03
|
0.03
|
0.05
|
0.05
|
0.05
|
0.05
|
0.10
|
0.05
|
| Total (Others) |
-
|
-
|
0.125
|
0.15
|
0.15
|
0.15
|
0.20
|
0.15
|
| Al |
99.50
|
99.70
|
99.00
|
Remainder
|
Remainder
|
Remainder
|
Remainder
|
Remainder
|
|
Single
number indicates maximum content
|
Surface
quality
Free from scratches, pit marks, rolling bands
Applicable standards
ASTM - B - 209M, Aluminium association aluminium standards and data, Hindalco manufacturing limits (as applicable).
Packing
The circles are packed in boxes or pallets with interleave paper, polythene, foam / thermocol. Pallets and boxes are strapped with hoop iron and clips. Silica gel packets are placed in the boxes for moisture protection.
Applications:
- Pressure cookers, non-stick cookware and hard anodised cookware
- Milk cans
- Medical cylinders