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Re: [MW:13093] Charpy Impact Test requirement for P91

By Materials & Welding
Mahendran is correct. But i would like to suggest you to read far enough into technical specification. I've ever seen that charpy impact is still required although its temperature is not critical. Normally, impact test is not mandatory for temperature above zero.

Rgds

2011/11/28 T. Mahendran <cbemahendar@yahoo.com>

Mr Asif,

Charpy test is required to find the metal behavior at cryogenic temperatures, since your operating temperature is higher than zero temperature, this impact test is not  required.

With regards
 
 
T.Mahendran,
QA/QC Engineer,
Tabouk - KSA,
--- On Sun, 11/27/11, ASIF <asifdme@gmail.com> wrote:

From: ASIF <asifdme@gmail.com>
Subject: [MW:13065] Charpy Impact Test requirement for P91
To: "Materials & Welding" <materials-welding@googlegroups.com>
Date: Sunday, November 27, 2011, 4:44 AM


Dear Members!

Project   : Solar Power plant
Service   : Hight Temperature Steam
Material  : P91
Operating temperature range: 37 - 398 Degree Celsius
Construction Code : ASME B31.1
Welding Code       : ASME Sec IX

Do we need to do 'Charpy Impact Test' for procedure qualification of
P91 material?


Regards
ASIF
+971-50

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