I caught a bit of this on BBC 3 last night, interesting program (well to me it was- my wife didn't agree!) about metal, history and development etc, covers iron, steel and Alu, explains about heat treatments etc and probably explains why we use certain metals for bike frames .
Should be able to watch on iplayer, not checked though .......
http://www.bbc.co.uk/programmes/b01fkc5n
Stu
Should be able to watch on iplayer, not checked though .......
http://www.bbc.co.uk/programmes/b01fkc5n
Stu