Skip to main content

Re: [MW:27348] Un control cooling of A234 P11 material during PWHT

Check hardness

On 19-Feb-2018 6:26 pm, "Waqar Zia" <waqqaar1@hotmail.com> wrote:

Aoa

If the joints have been soaked on required temperature and time then you should go for HT. If soaking time and temperature was not maintained then go for PWHT again. 




From: materials-welding@googlegroups.com <materials-welding@googlegroups.com> on behalf of Babur Khan <mbabur.bwp@gmail.com>
Sent: Monday, February 19, 2018 11:33 AM
To: materials-welding@googlegroups.com
Subject: [MW:27346] Un control cooling of A234 P11 material during PWHT
 
Dear all,
Please advise me in below condition during review of PWHT chart construction code is ASME B31.3 with SAES-W-011.
Welding joint Material is  A234 WP11 CL1 to A182 F11 CL2. Sch. S160.
Soaking temperatures is 715 'C
Soaking time 2 hrs.
Control cooling stop on 490 'C due to electrical supplies problems .
Contractor suggestions for hardness test.
Thanks and Waiting for experts views.
Regards,
M. Babur Khan
QA/QC inspector (Piping & Welding)
JAPID Jizan Refinery KSA
Cell number 00966582774568
Whatsaap 00923346186285


Sent from my iPhone

--
https://materials-welding.blogspot.com/
https://materials-welding.blogspot.com/ https://www.linkedin.com/groups/122787--- You received this message because you are subscribed to the Google Groups "Materials ...


https://www.linkedin.com/groups/122787
LinkedIn Make the most of your professional life. Join LinkedIn. First name


---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.
Google Groups allows you to create and participate in online forums and email-based groups with a rich experience for community conversations.


--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

--
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
Visit this group at https://groups.google.com/group/materials-welding.
For more options, visit https://groups.google.com/d/optout.

Comments

Popular posts from this blog

Re: [MW:34105] SA266 GR4N 4 Cycle SPWHT

Hi,  You are correct, Minimum refers to the one cycle for which this part will expose until final work shop PWHT. hence mill test certificate shall include this.  Max. SPWHT, refers to additional cycles of heat treatment that are reserved for future repairs during equipment lifetime.  Again, these simulated no. Of cycles shall be specified in MTC.  The idea is we need to make sure that steel mechanical properties are not compromised upon exposure to multiple repairs (i e 4 cycles in your case).  One could say, if steel is subjected to 4 cycles and is ok, then it should by defacto be good for one cycle, yet, this is wrong assumption cause mechanical problems and microstructure of materials varies accordingly based on no. Of cycles for which material will expose. This is apparent in alloy steel and especially for impact test values as an example.  In your case, this forged CS with properties before PWHT can be understood to be " as forged" condition (i.e. Wit...

Heat tint (temper) colours on stainless steel surfaces heated in air // Heat tint

Introduction The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change.   Oxidation resistance of stainless steels However, there are several factors that affect the degree of colour change and so there is no a single table of colour and temperature that represents all cases. The colours formed can only be used as an indication of the temperature to which the steel has been heated. Factors affecting the heat tint colours formed Steel composition The chromium content is the most important single factor affecting oxidation resistance. The higher the chromium, the more heat resistant the steel and so the development of the heat tint colou...

Materails FAQs

Q: What are equivalents for standard Q 235 B (and Q 235 A) for U-channels? (asked by: boris.vielhaber@vait.com) A: DIN Nr. = 2393 T.2, 2394 T.2, EN 10025 W. Nr. DIN 17007 = 1.0038 Design DIN 17006 = RSt 37-2, S235JRG2 (Fe 360 B) Q: What is St DIN 2391 BK material? (asked by: dmcandrews@automaticstamp.com) A: Precision steel tubes, cold-finished/hard. Q: What is C.D.W. Boiler Tube? (asked by: montydude123@yahoo.com) A: Cold Drawn Welded Boiler Tube. Q: WHAT IS W.Nr. 1.4301? PLS TELL US IN EASY LANGUAGUE (asked...