Although stainless steel
indeed has a much higher working load limit then G-40 chain there would be the issues of corrosion
. Stainless is wonderful stuff but when used below the waterline it must be bonded or protected with zinc. Micro fractures can form and the chain although looking like new might fail. But galvanized steel
gives warning or corrosion
with rust. On my 40ft boat
I use Acco 3/8 HT G-40 chain. The anchor
is a Spade S120, 25KG in weight. I believe the anchor
would drag before the chain parts
I like your thinking in terms of good anchor gear
, but stainless chain is expensive and its hard to know when its at its life's end (all things wear out). Stainless becomes brittle and just fails under high shock/loads. Loosing your anchor in foul weather
might bring lots of troubles.
Not all chains are equal as well. The cheap China
chain ? I think the better American made Acco chain is the way to go. The galvanization is second to none and the steel
if a true test.