Re: [MW:13148] change in tensile strength and hardness after simulation cycle( 3 pwht cycle)

Normally PWHT will decrease Hardness values and tensile test results accordingly.

Ramin  Kondori

   QC/Welding Engineer 

         IWE AT 0070

  

با تشكر

 

رامين كندري

واحد كنترل و تضمين كيفيت كارگاه ال ان جي كنگان

شركت نارديس انرژي

تلفن: 07727462189  داخلي 172 و171

فكس: 07727462179

همراه: 09132150320

آدرس: كنگان -  سايت LNG -  دفتر شركت نارديس

صندوق پستي 375  (اداره پست شهرستان كنگان)

 

Regards

Ramin Kondori

QA/QC Manager

IRAN-LNG Preoject

NARDIS ENERGY CO.

 

Tel.: +98-772-7462189 (Int.171, 172)

Fax: +98-772-7462179

Cell: +98-913-215-0320

 Add.(Head office): No.27, 6th St., Seyed Jamalledin-e-Asad Abadi Ave., Tehran, Iran, 1431784891

Add.(Site): NARDIS Office, IRAN-LNG Plant, Kangan-Iran P.O.Box 375(Kangan Post Office)

On Sun, Dec 4, 2011 at 4:11 PM, asad azmi <azmiasadayub@gmail.com> wrote:

Dear All,

 

Greetings.

 

 

A  SA 333 GR 6 pipe 6 " NPS x Sch 120  requires  simulation PWHT as per sour service  requirment

 

PWHT CYCLE is - 620 deg Celcius  for 2 Hours soaking time

 

simulation cycle is 6 hours.

 

intial value of Tensile strength is 482 MPA.

 

Hardness value is 187, 181, 179 BHN.

 

please inform me whether Tensile strength and hardness will INCREASE or DECREASE after Simulation heat treatment( 3 PWHT cycle) 

 

Thanks & Regards

 

Asad Azmi

 

 

 

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