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 Post subject: Aluminum explanations
PostPosted: Tue Sep 16, 2003 4:42 pm 

Joined: Thu Sep 11, 2003 9:10 pm
Posts: 378
Location: Colorado
Does anyone know a good resource that explains the differences in aluminums?? Such as 2014, 6061, 7005, ect. I'm looking to understand what the different types are and what are the advantages and disadvantages to each in relation to frames and rims.


 Post subject: Al
PostPosted: Tue Sep 16, 2003 11:04 pm 

Joined: Sat Nov 30, 2002 4:49 am
Posts: 1902
The different Aluminium designations have to do with their alloying constituents. The first number is the main element i.e. 6xxx is Silicion, 7xxx is Zinc (cant rememeber what 2xxx is - maybe Copper). The rest of the numbers are the identification number given to it when the composition is lodged with people who decide these things (I should know this).

Different alloys have different properties i.e. Weldability, ductility, malleability, etc.. and as such are suited to different tasks eg 7075 high strength, good fatigue life, slightly brittle - good for cranks, ok for hubs. 2014 good strength, high fatigue life , hard to work - good for hubs, difficut to make into rims.

The T* designation is the heat treatment level, T0 - fully annealed, T4 - half hard, T6 - 3/4 hard.

For more specific alloy information try www.matweb.com

 Post subject:
PostPosted: Wed Sep 17, 2003 6:29 pm 

Joined: Fri Jun 27, 2003 8:05 pm
Posts: 2069
Probably not much help but worth a read


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