Hindalco's spiral finstock is an established
product in the market for heat exchange applications.
With the help of high-quality ingots, state-of-the-art
gauge and shape control and precision slitting,
we manufacture fin stock that has tight gauge
tolerances and excellent slit edges. A tight
build-up combined with sound internal metallurgical
properties makes it suitable for all types of
finning. The product meets the stringent specifications
of globally competitive companies.
| Dimensions
|
|
Parameter
|
Range
|
Tolerance
|
| Thickness
(mm) |
0.30
— 0.45
|
+/-0.01
|
| Width (mm)
|
10
— 25
|
+/-0.1
|
| Coil I.D.
(mm) |
203,
250
|
-
|
| Coil O.D.
(mm) |
1350
max
|
-
|
| Mechanical
properties |
|
Alloy
(AA)
|
Temper
|
%E
(min)
(50mm gauge length)
|
UTS
(mpa)
|
|
Min
|
Max
|
|
1050
|
soft
(O)
|
30
|
55
|
95
|
|
1060
|
soft
(O)
|
30
|
55
|
95
|
|
1100
|
soft
(O)
|
30
|
70
|
110
|
| Chemical
composition |
|
Alloy
(%)
|
AA1050
|
AA1060
|
AA1100
|
| Fe
|
0.40
|
0.35
|
0.95
|
| Si |
0.25
|
0.25
|
(Fe
+ Si)
|
| Mg
|
0.05
|
0.03
|
-
|
| Mn |
0.05
|
0.03
|
0.05
|
| Cu
|
0.05
|
0.05
|
0.05
— 0.20
|
| Zn |
0.05
|
0.05
|
0.10
|
| Ti
|
0.03
|
0.03
|
-
|
| Cr |
-
|
-
|
-
|
| Each
(Others) |
0.03
|
0.03
|
0.05
|
| Total (Others)
|
-
|
-
|
0.15
|
| Al |
99.50
|
99.60
|
99
|
| Slit
quality |
| Free
from nicks, cuts and heavy burrs. |
| Coil
build-up |
| Uniform
and tight enough to be handled horizontally.
|
| Applicable
standards |
| ASTM
- SB -209M, Aluminium association —
aluminium standards and data, Hindalco
manufacturing limits (as applicable).
|
Packing
Spiral
finstock is placed on wooden skids in an eye-to-sky
position. It is wrapped in HDPE fabric and hardboard
and strapped with hoop iron. Moisture protection
is ensured with silica gel packets and the entire
packed product is placed in a wooden box.
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Aluminium recycling
has
been a common practice
since the early 1900s. The process
does not damage
the metal's structure.
Recycling aluminium cans, foil and
foil containers helps in conserving
energy. |
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