Jon Danniken wrote:
"Carl" wrote:

I google'd "grade 8 bolts brittle", and found this article that seems
pretty informative. The author is a Senior Staff Mechanical Engineer
for Lockheed Martin (DAMHIKT)

http://www.rockcrawler.com/techrepor...ners/index.asp

Go with the grade 8.


Great article, thanks Carl!

That article is quite right that brittleness is relative, and that
materials are only usually thought of as brittle when they fracture
before reaching their elastic limit. Even the most brittle steel isn't
as brittle as glass.

Best wishes,

Chris