Jeez... You need to be a little more selective with your info sources.!
..or do you actually believe that rubbish about " pockets of air" allowing it to hold the heat longer ?
..and have you ever seen a cast Al cook pot crack if dropped ?
Those comments are typical of someone with little more than a passing knowledge of modern metallurgy .
But, hey if you are comfortable with an impression of cook pots and moka pots with sponge like texture,... That's OK.
"Normal Aluminium"= aluminium without defects.
..or do you actually believe that rubbish about " pockets of air" allowing it to hold the heat longer ?
..and have you ever seen a cast Al cook pot crack if dropped ?
Those comments are typical of someone with little more than a passing knowledge of modern metallurgy .
But, hey if you are comfortable with an impression of cook pots and moka pots with sponge like texture,... That's OK.
"Normal Aluminium"= aluminium without defects.





combinations thereof. It can be found in virtually any type of metal casting or part, and is a particular problem in castings made from aluminum, zinc, bronze, iron, magnesium, and other alloys. Porosity is always present in powdered or sintered metal parts because of their structural nature.
At left:
There are two general classifications of porosity found in metal parts: macro-porosity in the form of large flaws in the part which may be visible to the naked eye; and micro-porosity in the form of very small, almost invisible voids. In powdered metal parts, the structure of the metal results in a condition similar to macro-porosity in castings having low density, and micro-porosity in high density castings.
Comment