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[MW:12576] MW: 12563- PWHT of modified P460 NL1 (1.8915) EN 10028-3

By Materials & Welding
Hi David,
 
Please recall today's discussion on this subject. ASME Sec-IX is yet to assign any P No to this steel. Some authentic references on nominal composition and mechanical properties are available in this attachment.
 
This material is accepted for design and construction in Sec-VIII, DIV-2 code, through code cases ,i.e CC-2477 (approved June,2005), reapproved  as CC-2594 ,Nov-2007. ASME imposed some restrictions on this steel, e.g:-
  1. thickness of plates not to exceed 20 mm (0.79 in)
  2. max copper in the plate -0.20%
  3. Vanadium, 0.10-0.20%
  4. design temperature not to exceed 150 deg F(65 deg C)
  5. PWHT Temperature range-985-1040 deg F(530-560 DegC),Minimum holding time 1/2 hr(30 min) at this temperature.
You may find more details in the code case.
 
Usually European consumable manufacturers ,ESAB, Bohler Thyssen or Metrode should be in a position to offer the recommended welding products for this steel. As this steel is a HSLA grade, often there may not exactly matching weld metal chemistry. However the consumable supplier definitely will have better idea.
 
Thanks.
 
Pradip Goswami,P.Eng.IWE
Welding & Metallurgical Specialist & Consultant
Ontario,Canada.
Email-pgoswami@sympatico.ca,
 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of David Stevenson
Sent: Tuesday, September 27, 2011 5:27 PM
To: materials-welding@googlegroups.com
Subject: [MW:12563] PWHT of modified P460 NL1 (1.8915) EN 10028-3

As this material is not in the tables can anyone provide the PWHT process for material 14.60mm thick in a pressure vessel built to ASME section VIII division 2?

 

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