Whats the test to determine aluminium from titanium?

[jez-4-bikes-max]

"Trouble is since then anyone who wants titanium bits made up comes straight to me"

Jones - Youve just shot yerself in the foot there....

 

[Lysander]

Get a magnet- if it doesn't attract, it's Aluminium.
If it shows non-positive attraction, it's Titanium.

I found this in the Alexandre Vinikourov Big Book of Metallurgy for Boys.

 

[The Ken]

Stick it in a bottle of coke, leave overnight, it it is there in the morning it's probably titanium.

 

[jez-4-bikes-max]

These are all really useless tips. Thank you.

 

[The Ken]

yes but we pulled Jones out of the woodwork, I'm doing engineering drawings as we speak

 

[B3]

Stick it in a bottle of coke, leave overnight, it it is there in the morning it's probably titanium.

 

[scant]

http://www.bikepro.com/products/metals/hardness.shtml

I was assuming they didn't want to mash whatever it was to test it

hang on, your suggestion of scratching it with a nail to test surface hardness is EXACTLY the same as my bikepro test, IE different ways of testing surface hardness! except my links to industry standard tests & yours is "scratching it with a nail"

yeh I think my suggestion is a serious suggestion jez it would probabily help if you told us what the part is?

 

[jez-4-bikes-max]

Chainrings!

 

[scant]

do you have them to hand? the ti chainrings i've used are generally much smaller side on. IE less material used, if not they;re be heavier than the alu 1s

 

[jez-4-bikes-max]

Not yet - they are on their way...