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Re: [MW:12903] Furnace temperature for PWHT

By Materials & Welding
Dear Manpreet,

There will be no effect on the material as u said temperature was 385 Deg C. This requirement is to make sure that temperature is maintained through out the furnace and temperature impact ( To put suddenly a material from room temperature  to the higher temperature ) is not much.

regards

Yash Yagnik
TUV India Pvt Ltd- Ahmedabad
yash@tuv-nord.com

On Wed, Nov 9, 2011 at 4:08 PM, manpreet <manpreetsin88@rediffmail.com> wrote:
Hi,

PWHT procedure for a unit (Pig Traps) made of API 5L Gr 65 material specify temp of furnace 300 Deg C when unit is placed on it, unfortunately Furnace temp was recorded at 385 Deg C....

As i know max. recommended temp of furnace while placing unit should be 315 Deg C, please share your view whether exceeded temp would effect mechanical properties in some way...

Regards
Manpreet Singh



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