[MW:1588] Re: Mix up of A106 Gr.B and A336 Gr.6 pipes

Dear Mr. Reddy,

 

the mechanical properties of the two steel grades differ, significantly . It might be worth a try to distinguish between them using portable hardness testing like Equotip or Krautkrämer.

 

Best of luck,

Tjitte Schutter

 

ILF Consulting Engineers

Munich, Germany

 

2009/2/15 tamma reddy <tsr_52@yahoo.co.in>

Dear Friends,

 

When A106 Gr.B and A336 Gr.6 pipes are physically mixed up and mill identification/ stencilling was lost during painting on external surface. Since both are CS materials, segregation by PMI (i.e by X-Ray spectrometer or by Gamma ray) is not possible.

 

Is there any other NDE method to segregate/ identify them to the respective material specification.
 

Regards,

T S Reddy

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