[MW:12640] RE: 12636] Impact value at -59 Deg C reg

Hello Eswaran,

 

SA 182F22 or equivalent plates, SA 387 Gr22  is not designed for low temperature application. If you're getting satisfactory impact values at minus -29 deg C then it's a very good case. What  are the impact values achieved (both weld and HAZ) ?

 

On the same token asking for impact at minus (-) 59 Deg C on the same steel, Avg 42 J/ Minimum 32 J ,would not be practical, as this beyond the limits of this steel.

For a temperature of (-) 59 Deg C , 2.5% Nickel steel, SA 203 Gr A/B would be the most appropriate and cost effective material.

 

Can you elaborate:-

• the design and operating temperature
• Process media/ fluid to be handled.
• Service conditions.
• If the customer insists on weld metal of similar chemistry to the base metal?

Thanks.

 

Pradip Goswami,P.Eng.IWE

Welding & Metallurgical Specialist & Consultant

Ontario,Canada.

Email-pgoswami@sympatico.ca,

pgoswami@quickclic.net

 

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Eswaran samikannu
Sent: Friday, October 07, 2011 9:10 PM
To: materials-welding@googlegroups.com
Subject: [MW:12636] Impact value at -59 Deg C reg

Good day to All,
 
We proposed to weld A182 F22 Material to F22 Material  80 KSI , Presently we have Impact value -29 Deg C is ok , Now my customer requirement -59 Deg C Impact value Avg 42 J/ Minimum 32 J, after PWHT 638 Deg C  4 Hrs minimum.

Process -SMAW & SAW

Presently used Consumables - E10018 D2 & AK 10 wires

 

Please give your suggestion which consumables / Brand, i can get the impact value.I refer the few suppliers consumables  certificates 100 %  weld metal impact value is equal or less than my requirement.

 

Thanks

Regards

E.Jegan

 

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