On Sep 10, 9:05*am, "'Mike'" wrote:
"Martin" wrote in message

...



For at least 30 years yellow chromate has been used between stainless
steel
components and aluminium on boats to prevent corrosion.

Back in 1952 when I started my Apprenticeship in Marine Electrical
Engineering, that practice was in use then on warships we were
building/converting.

So for future reference, you can say 'for at least 50 years' :-))

Nay lad, back when I were inspecting for young Issy Kingdom Brunel we
were using it then.......