books on material cost and it's mechanical properties

There are two great sources for material properties:

* Properties of Materials / Mary Anne White, 2011

* Engineering Materials: Properties and Selection, Kenneth G. Budinski, Michael K. Budinski 2009

Material Prices:

1. http://www.metalbulletin.com/

1. http://www.steelonthenet.com

1. http://www.lme.com/

4. http://www.steelonthenet.com/feeds/economics.php


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Just a word of advice ...
Be cautious of material properties ... Websites and books are great for narrowing down your material selection but make sure you get the actual material properties from the material supplier.
Even then be cautious ... I've had datasheets for the same material and when comparing the english, german and american datasheets they all had slightly different properties.

That said Matweb is my favourite for polymers!
For metals I usually head to http://www.aalco.co.uk or sometimes http://www.goodfellow.com.

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Thanks, LinkedIn Gopher!

Those are some great books, sites!