6061 or 7075 for building enclosures

bzo · 17th March 2004, 07:44 PM

I've been shopping around for some aluminum to build my amp, and I am seeing these 2 alloys of aluminum most frequently. Are there any significant advantages or disadvantages to using one or the other? Ease of machining? Finishing?

Magura · 18th March 2004, 11:47 PM

I usually use 7075T6 whenever i can get it. Its a little harder than 6061T6 and therefore a little less sensitive to bruises. Besides that it is easier to machine/-cut since it dosnt stick as much to regular metal working tools as 6061.

7075 is much stronger as well, wich is beneficial for some class A amps.

Magura

bzo · 19th March 2004, 04:46 AM

Magura, thanks for sharing your experience. Another advantage is that it seems like I am finding more 7075 in the surplus market also.

I have read that it can be more difficult to anodize 7075 because of its higher alloy content. Have you ever ran into this problem?

Magura · 19th March 2004, 05:00 AM

Its the copper that previously have caused trouble when anodizing, An experienced anodizer wont mind as long as you tell them its 7075.

Magura

17th March 2004, 07:44 PM	#1
bzo diyAudio Member Join Date: Jan 2004 Location: San Francisco, CA	6061 or 7075 for building enclosures I've been shopping around for some aluminum to build my amp, and I am seeing these 2 alloys of aluminum most frequently. Are there any significant advantages or disadvantages to using one or the other? Ease of machining? Finishing?

18th March 2004, 11:47 PM	#2
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	I usually use 7075T6 whenever i can get it. Its a little harder than 6061T6 and therefore a little less sensitive to bruises. Besides that it is easier to machine/-cut since it dosnt stick as much to regular metal working tools as 6061. 7075 is much stronger as well, wich is beneficial for some class A amps. Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

19th March 2004, 05:00 AM	#4
Magura diyAudio Member Join Date: Oct 2003 Location: Denmark, Viborg	Its the copper that previously have caused trouble when anodizing, An experienced anodizer wont mind as long as you tell them its 7075. Magura __________________ Everything is possible....to do the impossible just takes a little while longer. www.class-a-labs.com

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19th March 2004, 04:46 AM	#3
bzo diyAudio Member Join Date: Jan 2004 Location: San Francisco, CA	Magura, thanks for sharing your experience. Another advantage is that it seems like I am finding more 7075 in the surplus market also. I have read that it can be more difficult to anodize 7075 because of its higher alloy content. Have you ever ran into this problem?

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