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Shore Hardness
2

Shore Hardness

Shore Hardness

(OP)
Hi,

I have 2 elastomeric materials and need to compare their Hardness.

The problem is hardness of one material is given in Shore "A" scale and the other in Shore "D" scale.
I have searched the net and could not find conversion table.
Please help me.

Thanks,
 

RE: Shore Hardness

Paramathma, there is no conversion table for °A to °D but they do overlap a little.  The D scale is for measuring rubbers (e.g. ebonite) that are harder than about Shore A = 90.

RE: Shore Hardness

As Graham noted, there's no direct comparision between the two tests as the indentors and the springs are different for the two instruments. There is some data on hardnesses tested by the two methods at http://www.calce.umd.edu/general/Facilities/Hardness_ad_.htm that explains this a bit (about 1/2 way down the page).

Hope this helps.
 

Tom Jablonowski, TSE Industries, Inc.
www.tse-industries.com

RE: Shore Hardness

(OP)
Thank you very much

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