Re: [MW:4113] Pitting acceptance criteria

dear sir anything biger than the calaberation notch wich is 1mm is a defect and i do believe it would be down to the welding engineer to make a desision as to wether or not to use the elbow i do bilieve that there is no specific area as to how much pitting would b allowed the decision would be yes or no or can the pitting b eliminated i.e repair welded as a welding inspector i would have some idea as to wether or not it way be used but would hafto come from a engineer and depending on what product would be going through the material

 

 

regards

mike.

----- Original Message -----

From: Gulam kader

To: materials-welding@googlegroups.com

Sent: Wednesday, January 20, 2010 9:52 AM

Subject: [MW:4105] Pitting acceptance criteria

Dear all,

 

We received one 40" elbow (ASME 16.9) ASTM A 860 material having so much pitting on full external surface. Which standard we can refer for the acceptance criteria? 

 

 

I referred in ASTM A 860, its talks about only depth of surface discontinuity(5% of the nominal thickness),  there is no detail about the area of the pitting allowance.

 

Please help me on this issue. Very urgent

 

Regards,

 

Gulam Kader 

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