Subject: Re: Bronze question

From: [email-masked] (Conrad E. Muller)
Date: 21 Nov 1994 17:25:44 GMT

>SS is not a problem unless it 
>is buried in a situation wherein it is NOT exposed to oxygen.  Thus, it 
>is considered good practice to use SS for shafts and rudder posts,where 
>it is exposed to moving oxygen laden water,  but its bad practice to use it 
>for fasteners (screws) in a boat.  If the boat will be in water only momentarily, 
>say weekends, then it would probably be OK.  
>
>We never use stainless for fasteners.

Moving water is the important factor. When the water stops moving, you can 
have problems. In a boat that is stored afloat, long periods of dissuse may 
lead to corrosion where the rubber shaft bearings sit against the stainless. 

I have seen shafts made unusable by this type of corrosion.

Conrad