Steel is an alloy, Iron is an element. aluminum is an element
6061 and 7075 more accurately describe the contents % of one of the many aluminum alloys..
like:
4130 is a better way of describing a particular alloy
[atomic numbers from periodic table]
of 26 iron Fe, 6 Carbon C, and 24 chromium Cr, and 42 molybdenum Mo.
james? given SGE is a seller as the signature links suggest.
I don't know what they had in mind with such a post.
are they clueless? trolling , timewasting..
FWiW, Trek, as an example, stands behind their new bike frames
for the original owner's lifetime, no matter what it is made out of..