SailNet Community - View Single Post - Chain plate metal bad
View Single Post
post #4 of Old 10-25-2011
Senior Member
RichH's Avatar
Join Date: Jul 2000
Location: Pennsylvania
Posts: 4,563
Thanks: 42
Thanked 259 Times in 245 Posts
Rep Power: 18
Originally Posted by davidpm View Post
I have read that too Rich but Pacific Seacraft is known for building a good blue water boat and I believe there hardware is oversized.

I'm not sure I can really explain or know what to do with this knowledge.
If you pull a chain plate and it looks like it is in perfect condition but it is junk and there is no non-destructive way to tell what do you do?
Fatigue is characterized by microscopic fractures in the 'grain' or surface of the base metal. Fatigue is evaluated by microscope, by magnetic or dye-penetrant methods such a 'magnafluxing' or other metallurgical analysis.

No one is stating that PSC built lousy boats ... ALL metals in cyclically loaded applications that exceed their 'endurance limits' will FAIL (sometimes catastrophically) by fatigue FAILURE.
RichH is online now  
Quote Share with Facebook
For the best viewing experience please update your browser to Google Chrome