[MW:1590] Re: Mix up of A106 Gr.B and A336 Gr.6 pipes

Dear Friend,

 

If i am not wrong A336 Gr.6 such pipes are not avaliable, may that is A333 Gr.6 (LTCS), there are two methods for separations of this materail.

 

1. Perform Impact at -45° and whch passes the test is A333 Gr.6 and which fails is A106 Gr.B.
2. Perform chemical analysis by any method whcih can detect the following

     Ni, Cr, Co, Va, Mo, since A333 Gr. 6 does not have thease requirements whcih materail not having thease composition were     

     A333 Gr.6 materail.

 

Regards,

 

N.Nageswararao

    

On Sun, Feb 15, 2009 at 4:25 PM, tamma reddy <tsr_52@yahoo.co.in> wrote:

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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