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6061 T6 ALUMINUM ALLOY any good?(12 posts)

6061 T6 ALUMINUM ALLOY any good?by666
Jun 11, 2002 12:36 PM
im thinking about buying a frame that uses 6061 with carbon seat stays, isnt 6061 very old and low tech stuff?
re: 6061 T6 ALUMINUM ALLOY any good?No_sprint
Jun 11, 2002 1:33 PM
I'm not familiar with 6061. Who is the manufacturer? Are you sure it's T6? Dedacciai makes a nice T6 Energy tubing. I've got a bike with that alloy. Nice and light, stiff and fast, progressively, even triple butted I think. I think it's drawn from 7005 and it's also cheap. I'd prefer to have their Scandium (61.10) tubing, but those framesets are almost $1000 more right off the bat. Their 61.10 tubing is evidently every bit as good as Easton Scandium. Sorry if this doesn't help too much.
re: 6061 T6 ALUMINUM ALLOY any good?paper warrior
Jun 11, 2002 3:17 PM
Maybe I'm just paranoid but but why doesn't Deda id their AL with a specific alloy series number? Must be a a corporate conspiracy so they can extract better margins that way. I mean what kind of mystery metal is that?
What T6 meansKerry
Jun 11, 2002 4:50 PM
The T6 designation is a heat treating reference - it doesn't refer to the alloy itself. While the 7XXX alloys are a bit stronger, they are also a bit more brittle. You can build a good frame out of either. Mavic Open Pro rims are 6XXX alloy - they won't say which one, just like the tubing companies won't. Telling which alloy you are using takes away the mojo and then you can't say that you have a "proprietary alloy" that makes your stuff way so much better than anyone else could possibly even imagine. Lots of people make lots of alloys, so just knowing the alloy reference does not tell you the maker.
6061 vs 7005?mark_2811
Jun 11, 2002 2:05 PM
I was about to post a similar question... What is the difference between these two allows for bike frames? One of the bike shops around here said 6061 was no good, but there seems to be alot of frames made out of it (Cannondale, etc). Any Metallurgical Engineers out there?

Mark
6061 vs 7005?No_sprint
Jun 11, 2002 2:15 PM
Basically, the difference is what other metals are involved and in what percentages. I know for a fact that the tensile and yield strengths are both higher for 7005. What that means is that you can use less of it to achieve a same strength, thus, it'll be lighter.

I think the main differences will be in the butting. There is basic 7005, double and triple butted too. Same with 6061. I wouldn't not buy the 6061 just because of the alloy, however, if it's not butted, an old alloy, etc., then I might look elsewhere.
Found itNo_sprint
Jun 11, 2002 2:18 PM
http://www.brucescycleworks.com/tips/tip18.html

7005 vs. 6061 comparison
re: 6061 T6 ALUMINUM ALLOY any good?jrm
Jun 11, 2002 2:39 PM
I liked my 6061 T6 Specialized Allez alot. it's light responsive but harsh.
I believe it is straight tubing only. yes, low tech :( nmNo_sprint
Jun 11, 2002 3:28 PM
FWIWyeah right
Jun 11, 2002 4:52 PM
6061 refers to composition of the metal

T6 refers to the heat treatment

It can be made into any shape you want and then heat treated, see cannondale.

It's not low tech, it just works well.
re: 6061 T6 ALUMINUM ALLOY any good?CJMeredith
Jun 12, 2002 4:27 AM
I'll bet you're looking at those Leader Bike frames on eBay. I'm buying one and am not ashamed to admit it! If that is what you're talking about, don't buy the LD-780 frames up for auction right now. Call Leader direct and get one of their updated frames that they're not advertising on eBay yet - they're significantly better for the same price. That being said, you can't expect $1500 performance from a $200 frame. If you're talking about a different frame, then ignore this.
Info From Easton Web Site...mark_2811
Jun 12, 2002 9:45 AM
http://www.eastonbike.com/downloadable_files/r&d_files/R&D-01%20Al%20Alloys.pdf

(cut-paste into browser)