anon (anon@anon.com) on 9/20/09 wrote:
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>Anon (no@email.com) on 9/19/09 wrote:
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>>anon (anon@anon.com) on 9/18/09 wrote:
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>
>>>It's stronger by weight than steel, and very resistant to corrosion. Seems like
>>>reasonable material for a laptop case to me.
>>
>>Ah, I see you dont actually know what you are talking about.
>
>I see you don't.
>
>>Aluminium has inherent problems due to its tendency to fatigue, it also has issues
>>with thermal cycling and vibration.
>
>We're talking about a laptop case here. Apparently you thought aluminium is not
>appropriate for that usage because of it's "poor mechanical properties".

Cheap laptops use aluminium carriers, expensive ones dont, learning anything yet?

>> Aluminium used in aircraft tends to be very
>>specific (and expensive) alloys, and inspected very regularly, AND not used in locations
>>where structural fatigue is likely to happen.
>
>Of course it does. It is obviously just designed with appropriate thickness so that the fatigue is tolerable.
>
>>The wonder metial you are looking for is magnesium and titanium alloys (not together,
>>both separately), and guess what the carriers is most high end laptops are made of?
>
>No I don't think that's the wonder material I'm looking for in a laptop case.

then you are wrong, go and learn something before shoving your foot further down your throat.

>
>What's a laptop carrier? An enclosure for the motherboard inside the outer case?
>I'd be surprised if these are made from magnesium or titanium alloys, given the cost. I would have guessed steel.

All this discussion and you dont even know what the carrier, the single most important part of a laptops structure, is? thats quite funny.

Just about all the good robust laptops are built as I said above. Cheap laptops generally use aluminium.

Aluminium (alloy..) components generally have to be made thicker and bulkier than (several..) other metal alloys to give the same base strength, however they are usually lighter (that some, for example steel) and cheaper than many (ie: magnesium and titanium) and easier to work, hence they get used in middle/lower end parts.

Perhaps you should go learn a few facts from someone other than apples marketing department?

since you like marketing material it seems:
http://www.ruggednotebooks.com/
http://www.getac.com/products/features_9212.htm
http://www.panasonic.com/business/Toughbook/fully-rugged-computers.asp

does anyone know of a MIL-STD-810G laptop that is NOT magnesium alloy?