Hey,
I have been having some conversations over on another site about anodized aluminium vs. bright AL vs. etched AL (etched being just diped quickly in caustic soda IIRC) and their strength.
The aloys used are 5154 for the etched and ano'ed and 5356 for the "bright".
So now that you have the background heres the thing i dont understand...
There are rings of 14 gauge wire with 3/8 inch inner diamater made from the 3 above materials and then just plain 5154 alloy rings. Some one did a test to see how much weight it would take to open the rings here are the results:
bright al-8244 grams
ano'ed- 7100 g
plain-6848 g
etched-6060 g
and now my question, how can the same alloy be weakned by just etching it but strengthened by anodizing it, what are the reasons that the ano'ed rings would be stronger?
Thanks
-matt
I have been having some conversations over on another site about anodized aluminium vs. bright AL vs. etched AL (etched being just diped quickly in caustic soda IIRC) and their strength.
The aloys used are 5154 for the etched and ano'ed and 5356 for the "bright".
So now that you have the background heres the thing i dont understand...
There are rings of 14 gauge wire with 3/8 inch inner diamater made from the 3 above materials and then just plain 5154 alloy rings. Some one did a test to see how much weight it would take to open the rings here are the results:
bright al-8244 grams
ano'ed- 7100 g
plain-6848 g
etched-6060 g
and now my question, how can the same alloy be weakned by just etching it but strengthened by anodizing it, what are the reasons that the ano'ed rings would be stronger?
Thanks
-matt
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