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Re: [MW:4728] ER70S-3 for low temperature application

By Materials & Welding

Let us take the thinks one by one
1. Your base metal is exempted from impact test
2. Your MDMT is 46 deg
3. Your filler material ER60S-3 is per spec at -20 deg
4. Your WPS was successfully qualified at -46
Conclusion: you can use this WPS for that combination of base metal and filler metal and MDMT warmer than -46 Deg C with no additional filler metal test.
I suppose you have checked compliance of your fabrication process with UG 84 regarding production impact test.
Regards

  From: Muhammed Ibrahim [ibratech@gmail.com]
  Sent: 06/04/2010 18:58 ZE4
  To: materials-welding@googlegroups.com
  Subject: Re: [MW:4725] ER70S-3 for low temperature application


Dear Sir,
 
UCS 67 (a) (2) says 'Weld made with filler metal shall be impact tested if base metal is excempted by UCS 66 and MDMT is colder than-29 deg.c and not colder than-48deg.c and welding consumable is classified by impact test at a temperature not warmer than the MDMT by the applicable SFA Specification is used.
 
In my case I mentioned ER 70S-3 is specified for -20 deg.C as per SFA Spec. which is warmer than the MDMT of the euipment (-46 deg C).
My query is, as stated in UCS 67 I have Impact tested the PQR at MDMT -46 and passed the test. As per the proven support of PQR can I use ER 70 S3 for -46 deg.C application without seperate batch test?.
 
Regards,
Muhammed Ibrahim PK


 
On 2 April 2010 18:13, <george.dilintas@gr.bureauveritas.com> wrote:

Then you will find your answer in USC-67.
If you do not have the code or you have interpretation problems let me know.

  From: Muhammed Ibrahim [ibratech@gmail.com]
  Sent: 02/04/2010 16:34 ZE4

  To: materials-welding@googlegroups.com
  Subject: Re: [MW:4670] ER70S-3 for low temperature application

Hi,
 
The code is ASME SEC. VIII Div.1.
 
Regards,
Ibrahim


 
On 2 April 2010 09:58, <george.dilintas@gr.bureauveritas.com> wrote:

Could you clarify what is the application code? Section I, section VIII-1?

  From: Muhammed Ibrahim [ibratech@gmail.com]
  Sent: 01/04/2010 18:40 ZE4

  Subject: [MW:4661] ER70S-3 for low temperature application

Hi members,
 
Please provide a suggestion for the following query.
 
I have qualified a PQR for GTAW+SMAW with ER70S-3 & E7018-1. The PQR is impact tested at - 46 deg C at root(GTAW) and filling (SMAW) and passed (Min. 50J energy obtained).
 
As per ASME Sec.II part C, E7018-1 will support up to - 46 Deg C, but ER70S-3 will support up to - 20 Deg.C only.
 
Since I have proven the toughness through PQR, can I use this PQR for job with impact test requirement of - 46 Deg C, even ER70S-3 does not support for this temperature as per Sec.IIC?.
 
Thanks & Regards
Muhammed Ibrahim PK

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Thanks & Regards
Muhammed Ibrahim PK

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Thanks & Regards
Muhammed Ibrahim PK

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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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