Dear Muhammed,
PWHT temp. may differ by on lower side & higher side by 10 to 15 Deg.C
It wont have any serious impact on mech.properties.
However to convince client u may simulate the condition and send the specimen for mech testing.
Also do your client spec. ask to refer ASME B31.3?
Regards
SACHIN.sANKHE
On Tue, 15 Jul 2008 Muhammed Ibrahim wrote :
>Dear Friends,
>
>I encountered a problem with *SA333 Gr.3 (P9B) material* PWHT. The material
>is quenched and tempered. As per ASME SEC II the tempering temperature of
>this material is *565-605 degree celcius.* But ASME B31.3 allows the *PWHT
>593-635 degree celcius.*
>
>** *Is it allowed to do so? Will it effect the tempering property of
>material if it do above the tempering temperature?*
>
>Thanks & Regards
>Muhammed Ibrahim PK
>
>>
Sachin.Sankhe
Engineer-Inspection
Aker Kvaerner-Malaysia
Mobile:012-2896901
Email1:Sachin.Sankhe@akerkvaerner.com
Email2:Sachin.sankhe@rediffmail.com
 |
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