Re: Materials?

Skippy wrote:
"Phil, Squid-in-Training" <phil_leeIHEARTBASHGUARDS@xxxxxxxxxxx> wrote in message news:A4hYf.4553$fS6.742@xxxxxxxxxxxxx

Skippy wrote:

"Hell and High Water" <tifosoREM@xxxxxxxxxxxxxx> wrote in message
news:MPG.1e9b0efa964a15309897b5@xxxxxxxxxxxxxxxxxxxxxxx

What are the main differences between frame materials??

Carbon
Aluminum
Steel
Boron
Scandium


??


Thanks

-Bob


Boron is generally used in composites (Kestrel and Trek spring to
mind). composites generally have carbon and aramid fibres (Kevlar) . Some have glass.

The Bianchi Boron XL apparently has some boron in the steel. From their marketing-spew:

Triple-butted Boron steel alloy. Very high tensile strength of 1800N/mm2, 3 times stronger than the best aluminum alloys, 2 times stronger than titanium alloy and 25% stronger than the best non-Boron steel alloys. An exclusive heat-treated Boron steel alloy produced to Bianchi's specifications. MegaPro downtube is 0.6mm thick at butts and only 0.4mm thick in the center. Post-welding stresses eliminated by water quenching, tempering, heat treatment and open air cooling.

--
Phil, Squid-in-Training


I'm sure almost every element has been tried in alloys of steel, aluminium and titanium. Trek market on the fact that they've got zirconium in their ZR9000 stuff. Gaint used to go on about the copper in their CU92. Definite marketting waffle though, no mention of modulus.

Skippy
E&OE


copper is the oldest of the precipitation hardening systems in aluminum. it works and it works /really/ well. but to significantly affect modulus, you have to go lithium.
.