Perhaps HE30 TF Aluminium would be a good Aluminium to use for my Astronomical Telescope mirror. I am going to try to grind my own mirror.!
2006-10-16 03:55:09 · 9 answers · asked by Richard A 1 in Science & Mathematics ➔ Physics
Atomic Number 13
Atomic Weight (g/mol) 26.98
Valency 3
Crystal Structure Face centred cubic
Melting Point (°C) 660.2
Boiling Point (°C) 2480
Mean Specific Heat (0-100°C) (cal/g.°C) 0.219
Thermal Conductivity (0-100°C) (cal/cms. °C) 0.57
Co-Efficient of Linear Expansion (0-100°C) (x10-6/°C) 23.5
Electrical Resistivity at 20°C (µΩcm) 2.69
Density (g/cm3) 2.6898
Modulus of Elasticity (GPa) 68.3
Poissons Ratio 0.34
That OK? :D
2006-10-16 04:21:36 · answer #1 · answered by huggz 7 · 2⤊ 0⤋
The coefficient of linear expansion, expressed as a mean value for temperatures between 20ñ100°C, is for pure aluminium (Al99,99) 23,6·10ñ6/K and for most aluminium alloys in the range 22,8ñ24,2·10ñ6/K.
Remember the coefficient of linear expansion increases with temperature.
2006-10-16 10:58:56 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Product Aluminium
Linear Temperature Expansion Coefficient
(m/m.K x 10-6) 22.2 (in/in.oF x 10-6) 12.3
2006-10-16 11:23:07 · answer #3 · answered by stratmanreturns 5 · 0⤊ 0⤋
(23/1000000) per degree K at 20 degrees C.. The value for steel is, in comparison, (12/1000000) in the same units.
2006-10-16 13:00:57 · answer #4 · answered by r_ravoori 2 · 0⤊ 0⤋
appears to be 24
2006-10-16 10:59:50 · answer #5 · answered by Maid Angela 7 · 0⤊ 0⤋
o.k. not an expert but there are thousands on directessays.com... just put it into the search bar and as a bonue it will give you some essays about the subject aswell
2006-10-16 10:59:02 · answer #6 · answered by Anonymous · 0⤊ 0⤋
well good luck to you but I aint that brainy so I cant really help you cause I haven't got a clue what a linear blar blar blar is!
2006-10-16 10:56:54 · answer #7 · answered by Jo. 5 · 0⤊ 0⤋
I dont know. I dont have any metallurgical resources with me as I am typing on Yahoo Answers.
2006-10-16 11:02:56 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Check this site out.
http://www.roymech.co.uk/index3.htm
2006-10-16 11:02:43 · answer #9 · answered by Anonymous · 0⤊ 0⤋