I HAVE MET THE SAME PROBLEM IN A U-STAMP VESSELS, the required condition is as-rolled plates, while the vendor sent normalized plates( SA 516-70N), , The ASME inspector didnt reject, as normalizing enhance the mechanical properties.
---- at the worst case, raise NCR to the design dept. to solve it,.
the difference between normalizing and as rolled - plates, is that the normalized ones have fine grain structure, which enhance the toughness,
while the reverse is rejected, as we cant use as-rolled plates instead of normalized ones.
in ASME II-A ( SA 516),PARA 5, NORMALIZING IS ESSENTIAL FOR PLATES OVER 40 mm
QA/QC ENGINEER: Amr soliman
PETROJET-Egypt
Date: Fri, 16 Jul 2010 21:30:53 +0300
Subject: [MW:6001] SA 516Gr 60 Difference with SA516 Gr60N
From: jcyrilandrew@gmail.com
To: materials-welding@googlegroups.com
Dear all,
Regarding Carbon Steel material SA516 Gr60 and SA516 Gr60N .
my doubts as follows,
1. what is the difference between them.
2. Generally how we will get from the manufacturer/supplier.
3. Whether we can use instead of SA516 Gr 60 with SA 516 Gr60N.
Note : It is ASME Vessel. "'U'" Stamp job. Consider this as urgent . Reply immediately.
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Regards,
J.C.Andrews
QA/QC Engineer
Doha-Qatar.
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