A way to verify 7075 T0 Aluminum has been successfully Heat Treated to T6

[R. Webb]

I need a way to verify 7075 T0 Aluminum has been successfully heat treated to T6. The heat treater we use says they can verify the process but not the result. I found the thread here and just want to confirm that a Rockwell "B" of 47 to 60 confirms a T6 hardness in aluminum. I have not been able to find a cross reference for this and am not a metalurgist.


6061-T6 Aluminum - Any reason Heat Treat can't hit Minimum of RB/50?

[sorin]

What is the referenced standard for the material? What are your PO requirements? (example: HT 7075 T0 per ....etc.)

[R. Webb]

Thanks for responding. The specification is:

Heat Treat 7075-0 to 7075-T6 Per SAE-AMS-2770

[sorin]

In Reply to Parent Post by R. Webb

Thanks for responding. The specification is:

Heat Treat 7075-0 to 7075-T6 Per SAE-AMS-2770

AMS-2770 H

Para 4.3.1.3 Other Alloys or Other Tempers

Each lot of parts shall be hardness and conductivity tested. Testing shall be in accordance with 4.3.1.3.1 or 4.3.1.3.2

See those 2 paragraphs - specify on PO which one you want to apply (both request hardness testing).

Hardness results shall be as per AMS2658 (which I don't have).

[andygr]

For 7075 T0

Rc B 22 max
Conductivity 44-48

At 47-60 it looks like you are high on hardness for this temper

For the T6 temper the hardness is 84 max for the anneal condition and min for everthing else

[R. Webb]

Matweb is telling me that the conversion from the Brinell Hardness Value is 87 Rockwell B form 7075 T6 Aluminum. I am not sure what 84 max for the annealed condition means.

What I really need is a book or website that goes over the basics and includes this information. Don't get me wrong as I really appreciate your help but I am a novice with this material and need to get up to speed on it, at least for the verification aspects of it.

[sorin]

In Reply to Parent Post by R. Webb

Matweb is telling me that the conversion from the Brinell Hardness Value is 87 Rockwell B form 7075 T6 Aluminum. I am not sure what 84 max for the annealed condition means.

What I really need is a book or website that goes over the basics and includes this information. Don't get me wrong as I really appreciate your help but I am a novice with this material and need to get up to speed on it, at least for the verification aspects of it.

In that case, go after this:

http://www.techstreet.com/standards/...oduct_id=54586