"Tim Lamb" wrote in message
...
In message ,
writes
On Friday, 6 December 2019 21:35:56 UTC, Tim Lamb wrote:
In message ,
tabbypurr writes
On Friday, 6 December 2019 20:33:52 UTC, Tim Lamb wrote:
In message ,
tabbypurr writes

Steel + ali results in much accelerated corrosion of the ali. Not a
good combination

Brass,steel, ali is worse:-)

we can only guess what that means.

I once used pop rivets (aluminium) to secure protective strips to a
sports car wing. The real mistake was using brass washers under the
rivet heads. Moist road salt environment, they lasted less than 12
months.

Someone will chip in with the electrical activity numbers for various
metals:-)

So what would you use for an ali door? Casting ali hinges & using ali
rivets might be ideal but it's a bit of a faff.

Something like this?

https://www.ironmongerydirect.co.uk/...ng-hinge-102x7
6x3mm-304-satin-stainless-steel-pair-321864?vat=1&shopping=true&infinity=
ict2~net~gaw~ar~387176555199~kw~~mt~~cmp~Smart+Sho pping+%3E+Top+Products~
ag~Ad+group&gclid=EAIaIQobChMIq8rHkdij5gIVFKSzCh3E 2QeYEAQYCSABEgLtffD_BwE
&gclsrc=aw.ds

Fixings might be the bigger problem. Will the door skin take a machine
screw thread.

Our swing fly screen doors are almost always aluminium and plated
hinges work fine, with pop rivets used both to attach the high to the
door and the hinge to the metal frame if it has a metal frame.