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-   -   Aluminium Sheet 7075 or..... (http://www.oople.com/forums/showthread.php?t=188342)

Mike73 07-03-2017 01:26 PM

Aluminium Sheet 7075 or.....
 
Looking to source some aluminium to make a car chassis. Been advised 7075 in a 2.5mm although getting hold of this seems almost impossible in a small 390mm x 100mm piece.

Advice please, do i really need 7075, need a couple of bends to put into the sheet 25 deg. If not 7075 what grade would you aim to obtain, any tips on where to get it from?

Many thanks.

tyreman 07-03-2017 05:56 PM

Try Richard Austin Alloys they sell small cuts, they have depo's in Coventry, Leeds, Manchester, Bristol, London and Scotland.

Rs fruitbat 07-03-2017 06:08 PM

I can get you some ,I'll pm you a price when I speak to my suppliers :)

Mike73 07-03-2017 06:47 PM

Fantastic thanks both I've been scouting the country eBay and had zero success. Exact dimensions 383 x 84.2mm and 2.5 mm thickness.

mrspeedy 08-03-2017 05:18 PM

I've used this for chassis .. needs cutting for the flat bit and would probably require heating to bend it but other than that its very tough which can't be said for some of the ali sheet on ebay !!

http://www.ebay.co.uk/itm/2624233025...%3AMEBIDX%3AIT

wrighty 12-05-2017 06:53 PM

Are you still looking for t6 7075

Mike73 14-08-2017 03:46 PM

Quote:

Originally Posted by wrighty (Post 972683)
Are you still looking for t6 7075

Yes still got half an eye out for some....

wrighty 08-02-2018 12:39 PM

I can get it but it's not cheap

Clive Loynes 10-02-2018 02:12 PM

The 0.9" stuff makes a good chassis but it's about as rare as hen's teeth.

In the US it is practically a supermarket item but over here the only people who have it want to sell a whole sheet. That's a hell of a lot of chassis!

Clive Loynes 17-02-2018 09:46 PM

I may be able to lay hands on some 0.9" thick 7075T6 if enough people are interested.

Chassis blanks may be in the order of 20. Depends on postage and how much I have to buy.

Mike73 05-03-2018 11:49 PM

Found out the hard way by phoning around that 7075 is just not available other than in a huge sheet.....
Can you advise on thoughts about using 6082 or alternatively 5083 in a 3mm thickness for a straight forward chassis with small kick which are less than 25 degrees. Holes would be drilled and countersunk.
Thanks

Clive Loynes 15-03-2018 08:48 PM

Hi Mike,

It would work and be strong enough but may be too stiff. I can't find my material data files at the minute but I would expect that Young's Modulous would be similar, it's just that 7075 takes more stress before it takes a permanent set.

Might be a tad heavy too.

Mike73 22-03-2018 02:06 PM

Thanks for your response, I found that 7075 is also a bu**er to laser cut.
I've got some made up now and they are perfect. Thanks all for input and assistance.

Clive Loynes 22-03-2018 05:40 PM

Quote:

Originally Posted by Mike73 (Post 986069)
Thanks for your response, I found that 7075 is also a bu**er to laser cut.
I've got some made up now and they are perfect. Thanks all for input and assistance.

As I understand it you don't try to laser cut aluminium because it reflects the beam. Waterjet works well or milling.

Glad to hear that you are sorted.

Mike73 23-03-2018 06:27 AM

Thanks Clive :)


Quote:

Originally Posted by Clive Loynes (Post 986077)
As I understand it you don't try to laser cut aluminium because it reflects the beam. Waterjet works well or milling.

Glad to hear that you are sorted.


rcjunky 02-04-2018 11:02 PM

you can laser cut aluminum ;) Our local laser shop has a 4000w laser that'll do 3/8" aluminum, and cheaper then water jet.

Clive Loynes 03-04-2018 08:55 AM

Thanks Andrew. Technology marches on. ;-)


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