[MW:744] Re: 737] Re: how to find hydrogen concentration

Where from you take Rf?
Is H for Hydrogen % or partial pressure?
Finally how do you use Ph and  in what relation?
What are the reference books, standards in the above context.?
Regards,
tagore

On Wed, Apr 23, 2008 at 8:50 AM, Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com> wrote:

the formula is not appering in the message, hence resending as an attachment.

-----Original Message-----
From: materials-welding@googlegroups.com on behalf of Raghuram Bathula
Sent: Wed 23/04/2008 20:51
To: materials-welding@googlegroups.com
Subject: [MW:737] Re: how to find hydrogen concentration

May i know why you need this calculation? if possible please detaile it for
the benifit of all members. probably the following would help you!

This formula is used for detecting cracking susceptibility of steels and is
valid only for certain range of steels



Where *P*H is the cracking susceptibility parameter, H is the concentration
of hydrogen (in parts per million), *R*f is the restraint stress (in
megapascals), and:




Good luck!

On Wed, Apr 23, 2008 at 3:28 PM, mech <arunmecheng@gmail.com> wrote:
>
> is there any mathematical formula to find  optimum level of hydrogen
> concentration in steels
>
> >
>

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