Aluminum Circles- Direct Rolled for Cookware
The properties of aluminum circles (or shaped blanks) make them ideal for use in a number of markets including the cookware, automotive and lighting industries:
Low anisotropy, which facilitates deep drawing
Strong mechanical properties
High and homogeneous heat diffusion
Ability to be enameled, covered by PTFE (or others), anodized
Good reflectivity
High strength-to-weight ratio
Durability and resistance to corrosion
Signi aluminum offers circles and shaped blanks in a wide range of alloys, tempers, thicknesses and diameters to meet all likely customer requirements.
| Aluminium circles |
| The properties of aluminum circles (or shaped blanks) make them ideal for use in a number of markets including the cookware, automotive and lighting industries: |
| Alloy |
Temper |
Thickness |
Diameter |
| 1050, 1060, 1070, 1100, 3003 |
O, H12, H14 |
0.36~10mm |
20~1200 |
| Remark: special specifications can be produced according to your requirement |
| 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 |
| Earing |
< 5% for ' O' temper
< 9% for H12, H14, H16, H18 |
|
| 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 |
| 3003 |
O |
25 |
90 |
130 |
close |
| H14 |
5 |
130 |
180 |
1/2T |
| H16 |
4 |
150 |
195 |
1T |
| H18 |
3 |
170 |
- |
3T |
| Chemical composition |
| Alloy (%) |
AA 1050 |
AA 1070 |
AA 1100 |
AA 3003 |
| Fe |
0.40 |
0.25 |
1.00 |
0.70 |
| Si |
0.25 |
0.20 |
(Fr + Si) |
0.60 |
| Mg |
0.05 |
0.03 |
- |
- |
| Mn |
0.05 |
0.03 |
0.05 |
1.00 _ 1.50 |
| Cu |
0.05 |
0.04 |
0.05 |
0.05 _ 0.20 |
| Zn |
0.05 |
0.04 |
0.10 |
0.10 |
| Ti |
0.03 |
0.03 |
0.05 |
0.10 (Ti + Zr) |
| Cr |
- |
- |
- |
- |
| Each (others) |
0.03 |
0.03 |
0.05 |
0.05 |
| Total (Others) |
- |
- |
0.125 |
0.15 |
| Al |
99.50 |
99.70 |
99.00 |
Remaining |
| 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. |
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