Here in sec II C , to qualify the consumable testing in elongation and yield strength the temp might have kept at 745 deg.
If you keep the temp low i.e 675, the minimum elongation requirement 19 of section IIC might not pass.
But in procedure section IX doesn't require the elongation..
In our procedures we are keeping 700 to 720 deg temp .So you will get the tensile requirements of section IX and minimum ductility requirements of IIC.Preheating and interpass temp will also effect this properties.So keep temp 200 deg and interpass 350 deg.Post heating 350 dg for 2 hrs.
In the past i was having the experience of geting the border case of elongation 20 when i kept temp 740 deg.
Umang Parikh
Thermax(B&H) Ltd.
Baroda.Gujarat
Umang Parikh
On Thu, 18 Feb 2010 09:28:13 +0530 wrote
>
Dear Mr. R. Bathula,
>
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Material SA 335 Gr. P5
P No. 5B & Group No. 1
>
Thanks.
Manoj
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On Thu, Feb 18, 2010 at 7:46 AM, Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com> wrote:
>
>
--Pl. indicate complete material specification (is it P5A, P5B and which group number?)
>
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of John Manoj
>Sent: Wednesday, February 17, 2010 8:02 PM
>To: materials-welding@googlegroups.com
>Subject: [MW:4335] PWHT OF MATERIAL P No.5B
>Dear all,
>I need the following information.
>what is the soaking temperature?what is the minimum holding time?What is the preheat and interpass temperature?
>i have to make 1" sch 80 SA 335 Gr. P5 coil and there are 5 butt joints and i have to qualify wps aslo as per ASME SEC. IX.As per ASME SEc. VIII Div. I normal holding temp. is 675 degree C and minimum holding time is 15 minutes.and as per ASME SEC. II part C Holding temp. is 745 degree C and holding time is 1 hr./ in.
>Thanks & Best Regards.
>Manoj.
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>
>To post to this group, send email to materials-welding@googlegroups.com
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>The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
>
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For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
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