How are (Vicers) Hardness and Tensile strength related in steel?
20 April 2004, 11:03 PM
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How are (Vicers) Hardness and Tensile strength related in steel?
I've been told that it's a general rule of thumb that tensile strength (in MPa) is 3 times the value for Vicers hardness HV. The example used is a mild steel with hardness ~100Hv. Can anyone confirm that this is correct? I can't find any reference to this rule of thumb in text books or online.
Cheers,
Ben
Cheers,
Ben
20 April 2004, 11:11 PM
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21 April 2004, 07:37 AM
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It would vary quite a bit depending on the material, but I found this approximation for steel and Brinell Hardness:-
Since we are being quite approximate here the Vickers hardness tends to come out slightly larger than Brinell so around 3 (ish) would seem reasonable for steel at least.
If safety is a factor I wouldn't like to rely on it for other materials though!
Since we are being quite approximate here the Vickers hardness tends to come out slightly larger than Brinell so around 3 (ish) would seem reasonable for steel at least.
If safety is a factor I wouldn't like to rely on it for other materials though!
Last edited by ajm; 21 April 2004 at 07:39 AM.
21 April 2004, 06:32 PM
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Thanks for the replies. A bit more searching found me this, which gives 100Hv = 345MPa but stresses (
) that it's an approximation.
Cheers,
Ben
) that it's an approximation.Cheers,
Ben
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