thank you for your detailed answer and recommendation, after many comparison between different material specifications in yield and UTS with almost same chemical composition such as (A105-A106-A234-A516-A216)
as conclusion
chemical composition: the main say of material properties with accuracy...
as far as i know the material mechanical properties is determined in the first place by its chemical composition, but how far the manufacturing method and subsequent heat treatment can increase the mechanical strength of the material[li][/li]?
Thank you all very much for your answers, so as conclusion there is no selecting criteria for M,Q or N they are the same (only a method of manufacturer don't effect by any way the material properties and no method is better than other. thus, whether i specified in the pipeline data sheet M or Q...
hello there,
is there any difference in mechanical properties between API 5L X65 M&N&q or the are the same ?
also when i specify to the manufacturer M,Q or M
