Re: [MW:13172] change in tensile strength and hardness after simulation cycle( 3 pwht cycle)

yes, when heat is added, both hardness and tensile are getting worst.

Rgds

2011/12/6, Shadab Ansari <shadabansarialam@gmail.com>:
> Dear Asad,
> Both Tensile & Hardness value will decrease.
>
> Regards
> Shadab
>
> On Sun, Dec 4, 2011 at 3:41 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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