Re: Hardness & Material Tensile Strength

From: <Steve>
Date: Tue Aug 07 2007 - 17:17:00 EDT

Su = 500(BHN)
Su is ultimate tensile strength in psi
OK for approximations. Applicability range: Carbon and alloy steels with BHN from 200 to 350.

Cheers

Steve

>From: Christopher Wright <chrisw@skypoint.com>
>Reply-To: PipingDesign@yahoogroups.com
>To: PipingDesign@yahoogroups.com
>Subject: Re: [PipingDesign] Hardness & Material Tensile Strength
>Date: Tue, 7 Aug 2007 11:41:30 -0500
>
>
>On Aug 7, 2007, at 5:37 AM, ghkghory wrote:
>
> > Is there any table /chart exists that indicate hardness v/s tensile
> > strength of material irrespective material classification.
>STFW. There is a very approximate correlation between hardness and
>ultimate strength for carbon steel which is is in most mechanical
>engineering handbooks, _Machinery's Handbook_ in particular.
>
>It should not be used for specification purposes because there are
>lots of things about hardness testing that provide varying results.
>Normally you'd use it to check the results of heat treatment or for
>making a rough determination of a material category. There may be a
>correlation for other materials like austenitic steel or non-ferrous
>materials, but I haven't seen such.
>
>Christopher Wright P.E. |"They couldn't hit an elephant at
>chrisw@skypoint.com | this distance" (last words of Gen.
>.......................................| John Sedgwick, Spotsylvania
>1864)
>http://www.skypoint.com/~chrisw/
>
>

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A new home for Mom, no cleanup required. All starts here. http://www.reallivemoms.com?ocid=TXT_TAGHM&loc=us Received on Tue Aug 07 17:17:00 2007