On 24/08/2016 2:39 p.m., Christopher Dunn wrote:
> What's the speed of rust?

I am sure you will get some very exacting answers pretty soon, but I 
will proffer my experience with metal and salt air/water contact, it 
speeds it up dramatically, I saw a new hatch cover arrive from the 
engineering firm for one of my ships, it was relatively silver and not 
rusty and it went on board, got strapped to the deck and they went to 
sea, 5 weeks later, it literally looked like it had been strapped to the 
deck for years.

But Pitting, sounds to me like some kind of chemical is accelerating the 
rust, I mean even leaving a sharpened edge sitting half in half out of 
water it's going to take a while to pit.

Correct me if I'm wrong (I'm sure someone will :-)

Michael
NZ