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[MW:16055] FW: 16018] filler material properties- E9018-G after PWHT Quench and temper.

By Materials & Welding
 Hi Hemu, 
 
As per ASME any electrode conforming to "G" classification is a condition specific  product. Electrodes with "G" classification have to  . It has to meet the mechanical properties as specified in SFA 5.5.However the  impact is subject to what the client wants vs. what the electrode manufacturer can provide. This needs to be discussed with the electrode manufacturer.
 
FYI I've attached a data sheet of E-9018G electrode (only for information & illustration).. This electrode will not qualify for NACE MR-0175 application unless "Ni" is reduced below 1%. Meeting the mechanical properties after normalizing should not be a concern with these electrodes.
 
Could you plea provide details on what your supplier had recommended???
 
Appreciate your feedback.
 
Thanks
 
 
 

 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist

Ontario, Canada.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

 
 
 
 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Manivannan Hemu
Sent: Saturday, November 24, 2012 1:24 AM
To: materials-welding@googlegroups.com
Subject: [MW:16018] filler material propertis- E9018-G after PWHT Quench and temper.

Dear experts,
 
Please provide us some guidance.
 
Situation:

We are salvaging castings of grade ASTM A487-4C, using filler material E 9018-G (Ni- less than 1%). This material needs to comply with filler metal chemistry per NACE MR 01 75.

We intend to do a PWHT as Normalize, quench and temper as similar to that of the parent metal.

Proposed austenize (normalize) temperature is 920 Deg C and temper temperature is of 680 Deg C.

Please clarify us the following:

  1. Would the all weld metal mechanical properties still meet the parent material requirements? (after Normalize, quench and temper)
  2. Does the weld metal charpy values meet 27J at minus 46 DegC?
  3. what would be the microstructure of the filler material after PWHT?
  4. Any filler material available that guarantee the above mechanicalproperties in normalize, quench temper condition suitable for A 487-4C material?

MANIVANNAN.P
COIMBATORE.

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