relationship between hardness and Young's modulus in polymers

[agb253]

Is there a reliable equation relating hardness to Young's modulus for polymers? I have a piece of polymer that would be hard for me to machine into a good tensile testing sample but it might be easy to perform a hardness test.

Please help.

 

[Compositepro]

I guess if that worked then everyone would be doing it. Sounds interesting, though.

 

[loughnane]

I know that there is NOT a correlation for Theroplastic Elastomers... technically polymers, although probably not what you are thinking.

I guess no.

Chris Loughnane - Product Design

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[EdStainless]

No.
Hardness is mostly driven by strength, though in low modulus materials there is a stiffness component.
If you are working with a type of hardness measurement that is in the fully elastic range then you might be able to develop one.

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Plymouth Tube

 

[Ron]

agb...I can't imagine such a correlation being very accurate if one exists at all.

Have you considered freezing the polymer before/during machining?