Here's a great table that shows the content and uses of all the SS
alloys:
http://www.machinist-materials.com/stainless_table.htm

PS: Stick with 316.

Thanks very much for the input, it confirms my doubts about using 304.

Pete

On Thu, 06 Jul 2006 13:19:23 +0200, pete wrote:

Hi, I need a forestay attatchment for my boat, someone has proposed
304 stainless steel instead of 316. As its a pretty important part of
my rig, I'm a bit dubious, but I don't know if its any more likely to
be corroded. A lot of it will be buried in the stem, but a lot of it
will also pop out above deck to take the forestay.

Any advice? I feel uneasy about 304.

Cheers, Pete