Testing method to confirm Aluminium 1050-O?

My concern are both, we are thinking of using arc/spark spectroscopy but that does not tell us about O. I believe the strength and hardness of material may varied between manufacturer, is there any standard that I can follow to determine O for aluminum 1050?

Thanks

Hi wmh76wh,

If you are thinking on checking the composition by spectroscopy, it seems you have to make this frequently. Regarding the temper designation, alloy 1050 is 99,5% aluminum and therefore non heat treatable, so there are just one method to improve the mechanical properties: by cold forming.

Usual temper designations are: O (annealed, and softest), H14, H16 and H18 (strain hardened, and hardest as highest be the second figure, being H18 the maximum achievable strain hardening)

Mechanical properties differ then according to the temper status. The most changing parameters which can be measured in a nondestructive way is Hardness. This can be measured not only by indentation but ultrasonically. You just have to search in Globalspec for ultrasonic hardness testers. Differences in conductivity which could be measured by eddy current probes, are not so different, so I think is better the ultrasonic hardness solution.

Here I enclosed a table with properties of 1050 aluminum in the different temper grades.

Kind regards

Chemical analysis and hardness.

Is there a standard to follow when testing 1050-O?

I am thinking to send a sample to the lab. I am afraid that I just get the result for chemical composition and hardness of the material.

People might ask how do you know the result is 1050-O?

I need to refer to a standard. Could somebody suggest a standard that can be accepted worldwide for testing aluminium 1050-O.

Thanks

It depends on the product form.

Here you have some examples:

EN 485 valid for rolled products (Plates)

EN 755 for extruded parts

ASTM B491 for extruded round tubes...

Kind regards

Are you making the material? Or just buy them? Or why do you need to do a test?

Get a mill test report from where you buy it from.

Look up ASTM standard for the material.

Some info in MatWeb:

http://www.matweb.com/search/DataSheet.aspx?MatGUID=273c1ffbdc134a8292c704da3ee2ff35&ckck=1

We are buying the material.

We need it to confirm the material and eliminate the possibility of mix up with other grade of material.

If we have a product failure, we want to make sure that the material is as what they are claimed.