Depends on your clients specification. If impact testing is to be performed in accordance with A/SA-370, Table 9 allows multiplication of acceptance criteria by ratio of tested specimen to full size specimen (0.40 in your case). Further, B31.3, Table 323.3.5 note (2), also allows for applying a ratio to the acceptance criteria for subsize specimens. In looking at the information provided, you have met the required temperature reduction requirement specified in Table 323.3.4.
In my opinion, a reasonable client should accept the values as meeting their specification requirements.
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Kannayeram Gnanapandithan
Sent: Monday, May 23, 2016 8:19 AM
To: materials-welding
Subject: Re: [MW:24831] Impact Test Acceptance Criteria for Dissimilar material PQR qualification
Gr 2 will have less value compare to Gr1
On 23-May-2016 6:42 pm, "'Biplab Pal' via Materials & Welding" <materials-welding@googlegroups.com> wrote:
Dear Gents,
Our Construction Code is ASME B 31.3.
Our Client standard is asking for the minimum impact value of 34/27 J for P1 Gr 1 & 40/32 J for P1 Gr 2 full size (10X10) specimens both Weld metal and HAZ at minimum design temperature for PQR qualification.
Process- GTAW + SMAW
Out MDMT is -45 Deg C.
The PQR tested at -64.7 deg C and the impact values are as follows for Weld 20.33/17 J and for HAZ-1 is 41.5/35.5 & HAZ-2 is 40/50 J.
Specimen size is 10X4.
Is the test result acceptable for Weld zone as per client std.?
We need your kind advice and code reference.
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Thanks & Regards
Biplab Pal
Welding Inspector
E-mail: biplab.mech@gmail.com
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