I like to share my views on the topic with respect to the various applicable code.
1.0 ASME Section VIII Div. 1 - Since the material is SA 240 316L,(and assumed that is being cold worked) , requirements of post fabrication heat treatment due to straining as per
UHA- 44 will not be applicable and therefore solution annealing is not required. Please note that any of- L Grades" is not included in table UHA- 44.
2.0 Considering Sour Services-----
NACE MR 0103 - Austenitic stainless steel shall be supplied with 22 HRC hardness max. in solution annealed and quenched or sol. annealed and thermally stabilized conditions.
As per this clause thermal treatment is not required (if fiber elongation exceeds 5 %), which is case for carbon and low alloy steel as per clause no. 2.1.7 of NACE MR 0103.
However, considering good practice, ensure hardness of formed dished end below 22 HRC.
With Best Regards,
Jignesh R Rana
Manager - Materials Technology, QA/QC & Standards
Linde Engineering India Pvt. Ltd.
'Linde House'
Opp: VUDA Office, VIP Road, Karelibaug,Vadodara - 390018, India.
Tel.: +91 265 3056789, Fax: +91 265 2335213 , Mobile: +91 90999 86019
jignesh.rana@linde-le.com, www.linde-india.com
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From: asad azmi <azmiasadayub@gmail.com>
To: materials-welding@googlegroups.com
Date: 13-09-11 16:55
Subject: [MW:12442] Requirement of Solution Annealing for SS DIshed head after forming
Sent by: materials-welding@googlegroups.com
Dear All,
Greetings.
SS Vessel is being fabricated as per construction code - ASME SEC VIII DIV 1
SERVICE : SOUR Service
Material of Construction for Dished Head - SA 240 316L, 20 mm Thickness.
I believe stresses will be induced in the material during forming and as a result , Sulfide Stress Cracking (SSC) failure may occur during operation.
Whether Solution Annealing of SS Dished Head is required after forming?
Please give reference of any International Standard.
Thanks & Regards
Asad Azmi
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