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[MW:1611] Re: API 5L X85

By Materials & Welding
Dear Mr. Babu,
 
as far as I know (I don't have the spec with me right now), material grade X85 is not an API 5L grade. I'm familiar with X70, X80, X90 and X100, and generally, these materials have a maximum allowed CE value of about 0.43.
 
The CE values you are referring to are very high and they differ a lot and therefore it seems likely that you have to prepare two separate procedures.
 
Regards,
Tjitte Schutter


 
2009/2/22 babu k <kbabupsg@gmail.com>


Hi,

 

I have the material, API 5L X85 bought from two suppliers, and we developed the Procedure for welding of this material for the T, K, and Y joint.

 

The carbon equivalent of this material vary by considerable amount by two suppliers (0.55, 0.78),

 

As per D1.1, CE is not an essential variable, but metallurgical point of view, there will be major changes in the weldments properties and behaviour,

 

How to take it into account this variation in Procedure? Is it allowable variation as per API 5L spec?
 
Thanks & Regards,
 
K.Babu
 

 

 





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