Re: [MW:5758] CPT determination by ASTM G48 Method C

Dear Mr Siva,
                 Your coupon will pass G48 method C provided your weld has no defects.

2010/6/26 veloumany siva <veloumany@yahoo.com>

Dear Members,

 

We are planning to establish a PQR for Super Duplex Stain less Steel-

 

1. Pipe Material-SA 790 UNS 32750

2. Process-GTAW

3.Filler Material-ER2594

 

One of our client requirement is the minimum Critical Pitting Temperature (CPT) of the weld ment in the as welded condition shall be 45 degree C.

 

Base Material Test certificate specifies the ASTM G48 Method C requirement.(i.e No pitting observed at the CPT 50 degree C for 24 hrs).

 

But Filler Material TC doesn't specifies.

 

1. My query is that it is mandatory that Filler Material TC should specify ASTM G48 requirement  to meet the Minimum CPT

 

2. If not Mandatory,whether welment will pass the corrosion Test as per ASTM G48 Method c

 

Regards,

S.Veloumany

 

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