I . About Aluminum :
Aluminum is a Period 3 metal that exists as a solid at room
temperature . The element is atomic number 13 , with an atomic mass
of 26.98 . Aluminum's melting point is 1,220 degrees Fahrenheit ,
and its boiling point is 4,566 degrees Fahrenheit . In its solid
phase , aluminum has a density of 2.7 grams per cubic centimeter ,
though its low density does not significantly impact its strength .
Unlike steel alloys , aluminum does not become brittle at low
temperatures . Instead , pure aluminum and many of its alloys
become stronger at low temperatures . At temperatures over 212
degrees Fahrenheit , aluminum softens and weakens significantly as
a load-bearing material . Aluminum is easy to work with , as it
responds well to most forms of machining with very little energy
Aluminum is an excellent conductor of both heat and electricity .
Pure aluminum has an electrical conductivity similar to that of
copper but at only half of copper's weight . It is also a good
reflector of visible light and radiated heat , which makes it
useful as a wrap for food .
II . Cold rolling Aluminum management
Dilly Family does not only promise quality of final product , but
also focus on the quality of raw material . And the raw material we
use should own the following characteristics :
- Chemical composition :
|Note : The essence with upper and lower limits is alloy element .
If the element is an odd number , for Aluminum it is the lowest
limit , for other element the top limit .|
|For the chemical composition , the poisonous should comply the
regulation of the following|
|one and GB 11333 . Pb≤0.01% , Cd≤0.01% , As≤0.01% .|
Mechanical performance :
|Alloy||Temper||Thickness mm||Mechanical performance|
|Tensile (σb , Mpa)||Elongation(δ , % )|
|8011||O||0.005-0.05||(60-100)||depends on thickness|
- Web :
Foil coil should entwine properly . Transection should be flat and
clean , with smooth edge , and without defects of serious burr ,
arrow , pyramid , which can affect usage . The telescoping isn't
allowed above ±1mm .
- Surface :
The surface should be clean and flat with no defects such as
corrosive stain , slit , wrinkle & bruise , which can affect
usage . But it's allowable to keep the ripple mark and impress nick
on the surface if they have no effect on usage .
III . Mission :
We try our best for good quality and service . Welcome to Dilly
Family home page to check what we could do for your kitchen
wrapping solution .