Half thickness tensile specimen retaining one rolled surface

[mrmalcolm]

For the tensile test of steel, tensile specimen with the full product thickness should be performed.
Particularly on very thick products where the capacity of the available testing machine is insufficient to allow the use of test specimen of full thickness, this may be reduced by machining one of the rolled surfaces.Alternatively, proportional round test specimens may be used.

Can the tensile properties of a half thickness specimen represent the tensile properties of a product. What is the relationship between the tensile properties of a half thickness tensile specimen retaining one rolled surface and the tensile properties of a full thickness specimen. What is the relationship between the tensile properties of proportional round test specimen and the tensile properties of a full thickness specimen. Do you have any relevant literature or data recommendations? Thank you

 

[EdStainless]

Why wouldn't the half that are testing be identical to the half that you removed?
You should be getting the exact same results.
When you go to less than half thickness then location can really matter.

 

[mrmalcolm]

Dear sir,
Tensile test results of the half that are testing are generally identical to the test result of the other half.
However tensile test results of the half thickness tensile specimen will be identical to the test result of the full thickness tensile specimen. Or what is the relationship between the two(half thickness specimen and full thickness specimen?
Thank you.

Why wouldn't the half that are testing be identical to the half that you removed?
You should be getting the exact same results.
When you go to less than half thickness then location can really matter.