View Single Post
  #9   Report Post  
Posted to rec.crafts.metalworking
Nick Mueller Nick Mueller is offline
external usenet poster
 
Posts: 344
Default Are higher grade bolts more brittle?

Jon Danniken wrote:

While the factory doesn't specify the grade, the nuts they go into
have a six (or possibly a 60) on them.


That's grade 6. Standard is grade 8. The mating strength for a bolt would be
grade 8.8. Grade 10.9 is just a waste of money. Sure, they are more brittle
(they can't be *stretched* as much before they fail) but there is no
construction that requires a *plastic* stretch.

So it is OK.


Nick
--
The lowcost-DRO:
http://www.yadro.de