Tuesday, August 17, 2010

Re: [MW:6537] dual certificate

Dual certificate menas
 
Chemical properties compliance with of lower grade material i.e Gr 60 & mechanical properties  compliance with higher grade materials i.e of Gr.70

Customer has specific requirments particular chemical & mechanical properties thts why they specify dual grade material or certificate required.
 
Hope the matter is useful.
 
Regards,
Vikas Rana
 
 
On Mon, Aug 16, 2010 at 3:54 PM, asad azmi <azmiasadayub@gmail.com> wrote:
dear all,
 
good day.
 
 what is the purpose of using a dual certified material.
 
 
 Example -  Plate  used for vessel fabrication as per ASME SEC VIII DIV1 is  dual certified as SA 516 GR 60 and SA 516GR70.
 
What will be the tensile strength of this plate and impact properties. whether these properties will be as per SA516 GR 60  OR sa 516 GR. 70.
 
Thanks in Advance.
 
Regards
 
Asad

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