Re: [MW:6523] dual certificate

Hi

 

In order to save money, fabricators fabricate and clients order material which satisfies more than one materials specifications requirements. This way by manufacturing a steel meeting, say grade 70 requirements can also be used in place of grade 60.

 

Would suggest to wait for a senior's reply, but I think my bit of information would help you understanding the basic reason behind this.

 

Regards

Muhammad Bilal

On Mon, Aug 16, 2010 at 1:24 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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