Comments on: Al 7005 and Al 7046 Aluminum Alloy – What’s In the High-End Bicycle Frame Mix?

By: Glenn Reeves

Glenn Reeves — Sun, 07 Apr 2013 14:11:59 +0000

No, there’s no way to tell. Some bikes frames will have stickers eg. 7005 T6. Ultimately you have to trust the vendor on this.

By: Edward Camuffo

Edward Camuffo — Tue, 26 Mar 2013 14:09:46 +0000

In shopping for an aluminum alloy bicycle frame, is there any way of determining the alloy and heat treating process? Could it be marked on the frame or does one have to trust that the vendor is correctly representing the frame he is selling?

By: Sabinna

Sabinna — Mon, 25 Jun 2012 06:07:11 +0000

This one is al7046. I design and manufacture it.

By: PH

PH — Fri, 11 May 2012 15:37:35 +0000

The Frame pictured, what AL is it 7005 or 7046? Who is it made by?

Thanks

By: Andrew Kerslake

Andrew Kerslake — Tue, 02 Aug 2011 10:54:42 +0000

I have read that different mills may produce different qualities of tubing, but it would be difficult to blacklist an entire region rather than an individual mill.

By: Sabinna

Sabinna — Tue, 02 Aug 2011 10:01:25 +0000

I don’t know enough about the subject to be able to answer that one Jonathan. Hopefully other readers can help out.

By: Jonathan Biddle

Jonathan Biddle — Tue, 02 Aug 2011 07:05:52 +0000

My understanding is that the alloys available in Taiwan are not always the same as those available in the USA; more related to the tolerances of additional metals in the alloy. Is this true? What is the effect?