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Re: [MW:13246] IMPACT TEST -SUB SIZE

By Materials & Welding
Sizing can be done either at the root or cap and subsize of 5mm can be obtained with the notch located in the particular process.
 
Yes the test temperature of  -40.1°C. is correct.
 
If the Full size(10x10mm) requirement is 34J then for subsize(10x5mm)  16J is acceptable
 
 
Thanks & Reagrds
 
J.Gerald Jayakumar
00968-93281596
From: Rajagopal Kannan <rajagopal.kannan@gmail.com>
To: materials-welding@googlegroups.com
Sent: Wednesday, December 21, 2011 9:57 AM
Subject: Re: [MW:13244] IMPACT TEST -SUB SIZE

Hi,
It is not practical to go for 5mm thk. with the weld deposit of 5mm.
You have to go for lesser dimensions.
Thanks,
K.Rajagopal

On Wed, Dec 21, 2011 at 8:15 AM, Sundaram Elumalai <Elumalai.Sundaram@starfab.com.sa> wrote:
Hi,
 
Now we are qualifying two new PQR for new project for less base metal
thick. (9mm). Code AWS D1.1
 
ROOT / HOT Pass              -GTAW (deposited 4mm)
Fill/Cap                                - SMAW (deposited 5mm)
 
We need to perform the impact test as per Client Welding spec for each process.
In this case, we have to go for Sub size with temperature reduction.
 
Client Welding spec requirement is minimum - 29 °C. 
 
If I go with 10x5mm sub size, I need to reduce 11.1 °C  and test to be
done at -40.1°C. (  -29 -11.1) 
Then Joule value will considered as per ASTM 370,16 J from the below
second table.
 
Is it correct ?
 
With Kind Regards,
 
S.Elumalai.
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