Having seen many examples of crevice corrosion, I am not a fan of stainless steel keel bolts. Integral keels are great, but there are limited designs available. An alternative would be bronze keel bolts.
Can the brains trust nominate any designs 25ft to 30ft with bronze bolts?
Another worthwhile consideration would be K-500 nickel also known as Monel. The major problem with Monel is trying to source it as it not produced in great quantities and that makes it more costly.
Bronze on the other hand is more readily available but even then there are pitfalls unless you know exactly the type of bronze you are getting.
There are also several different alloys of stainless steel that are more resistant to pitting , crevice corrosion and have better tensile attributes than the common 316 grade .
Select to expand quoteJolene said..
There are also several different alloys of stainless steel that are more resistant to pitting , crevice corrosion and have better tensile attributes than the common 316 grade .
I am looking at boats from the 70s and 80s so it is hard to know what SS they used. On the other hand, in those days, bronze was generally good quality. I have seen a bronze prop shaft on a 100+ year old shipwreck, sparkling in the sunlight.
Select to expand quoteYara said..Jolene said..
There are also several different alloys of stainless steel that are more resistant to pitting , crevice corrosion and have better tensile attributes than the common 316 grade .
I am looking at boats from the 70s and 80s so it is hard to know what SS they used. On the other hand, in those days, bronze was generally good quality. I have seen a bronze prop shaft on a 100+ year old shipwreck, sparkling in the sunlight.
Yep,, understood
