Abdi Elmi - Finance

Since we were quite fond on the idea of Aluminium alloys ive been searching the net for their industrial prices. I came across a real good website :
http://www.metalprices.com/FreeSite/metals/al/al.asp

It shows how much the current Aluminium alloys are sold in the stock market in a range of different currencies. It's got this Aluminium alloys calculator which lets you choose an alloy, showing it's prices per Kg or lb.
The alloy calculator link is :

http://www.metalprices.com/freesite/alloycalculator/AlloyPlus.aspx

A problem I stumbled across is that the alloys were all named using unique identity numbers, so it's hard to tell which alloy has what metal inside it. It's crucial for our stress analysis to find the yield stress and it's young modulus so we have to distinguish one alloy from the other. Here's a list of the alloys:

226(GBD - AlSi9Cu3)
319 , 319.1
356.1
535.2
A356.2 ,
A380 , A380.1 (LME Al Alloy)
A431.1
B390.1
D12S (JIS H2118-1976)

We need to research each alloy and compare their advantages and disadvantages to make it suitable for our crane build.