Monday, July 25, 2011

RE: [MW:11911] AWS D1.1 Table 4.6 Clause 1-Change in Group No.

Dear K.Babu,

A change in Group Number is a supplementary essential variable according to AWS D1.1.
Your WPS qualified in Group II to Group II cannot qualify for Group I to Group II.

Best regards,
Kang


Date: Mon, 25 Jul 2011 13:25:37 +0100
Subject: Re: [MW:11906] AWS D1.1 Table 4.6 Clause 1-Change in Group No.
From: rems.okonkwo@gmail.com
To: materials-welding@googlegroups.com

Dear K Babu,

WPS qualified on group II materials can be use on group I and Group II and its combination if all other variables are constant.
As per the CVN @-40, if the values obtained @-40 met the specification requirement @ -20 then the WPS is qualified as you requested. so you need to check the minimum value required @-20 and if the values obtained @ -40 meet the requirement @-20.

Regards,

Rems Okonkwo

On Sun, Jul 24, 2011 at 2:55 PM, K.Babu <kbabupsg@gmail.com> wrote:
Gents,
 
 
WPS is qualified in Group II to Group II, with CVN @-40 deg. cel.,
 
Can we use this WPS , to weld Group II to Group I  combination with requirement of CVN @-20 deg cel.
 
 
Thanks & regards,

K.Babu

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