Aluminum - alloys and corrosion - questions
Aluminum - alloys and corrosion - questions
(OP)
Hallo to everybody
When using search function I have seen lots of threads concerning aluminum corrosion.
Nevertheless, what I'd like to know is: could you kindly tell me is there a web page where I can find different properties of aluminum alloys ?
Concerning corrosion of aluminum, do you think that utilizing one alloy instead than an another one can delay the corrosion of aluminum when joined with copper ?
Do you think that the way this joining is realized can influence the dynamic of corrosion ?
Last question: is aluminum suitable to domestic water (ex: water with Cl), or to water mixed to anti frozen liquids ?
Thanks in advance
When using search function I have seen lots of threads concerning aluminum corrosion.
Nevertheless, what I'd like to know is: could you kindly tell me is there a web page where I can find different properties of aluminum alloys ?
Concerning corrosion of aluminum, do you think that utilizing one alloy instead than an another one can delay the corrosion of aluminum when joined with copper ?
Do you think that the way this joining is realized can influence the dynamic of corrosion ?
Last question: is aluminum suitable to domestic water (ex: water with Cl), or to water mixed to anti frozen liquids ?
Thanks in advance





RE: Aluminum - alloys and corrosion - questions
h
aluSelect has tables of properties for each common alloy. Below is for Corrosion and Anodizing Properties of Al 5052; there is a scroll menu for chosing alloys & on the left, a menu for other properties.
http
Besides many general books, there are 2 recent books on the Corrosion of Al:
Corrosion of Aluminum and Aluminum Alloys by ASTM Int., (1999)http
and
Corrosion of Aluminium by Christian Vargel (2004)
http
Re "corrosion of aluminum when joined with copper"
Copper enormously accelerates the corrosion of aluminum. Dissolved copper ions can travel throughout a closed loop, deposit on the aluminum & cause galvanic corrosion.
1) Use a dielectric junction (rubber gasket prevents direct contacts of the dissimilar metals.
2) Use a good coolant/antifreeze solution specified for protection of aluminum-containing systems.
3) The Al alloy must be nearly pure aluminum, e.g., Al 1100, 3003, 5005. Cannot be any 2000 or 7000 series alloy.
Aluminum isn't a good choice for domestic water systems. Occasionally, high purity grades like 1199 or those ust mentioned are used for non-chlorinated water. Some so-called 'marine grades' like 5052 are occasionally used on ships.
Hope this helps. Please include details on alloy & application if you need more info.