Framebuilders - 7046 Al Tubing?
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.
06-30-10, 12:49 PM
Posted on Road Cycling and not much in the way of replies. Any help and info would be appreciated.
7046 Tubing - bs or not
So I see this frame on scambay and did a google to find out about the tubing. Not much other than it seems to be used to make softball and baseball bats.
Anyone know more about this tubing and what ride characteristics one could expect from a frame made of 7046 tubing?
06-30-10, 04:56 PM
It's a proprietary alloy with a formula that suits the manufacture of aluminum products that need to be formed. I would bet it's a self-aging material with gobs of zinc that loves to be stretched and hates to be machined. They have been working on those alloys since 1990 but the best aluminum bikes are still 6061.
07-05-10, 08:51 PM
FWIW I Have a recent Koga Miyata bike, '04, they have used 7005 for their frames for many years.
07-08-10, 10:25 AM
but the best aluminum bikes are still 6061.
775 has almost double the tensile strength of 6061. Most of the high end Al bikes are 7000 series. Stronger means lighter...
Unless, as with all tubular structures, yield is also a Young modulus controlled event, not just a 0.2% offset controlled one. You can alloy a matrix with whatever you like, but substitutional solid solution strengthening and Orowan dispersion hardening do not alter your Young modulus.
Powered by vBulletin® Version 4.1.12 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.