NACE 0103 – Selection of materials resistant to sulfide stress cracking (SSC)
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The project involves material selection in accordance with NACE 0103; it usually deals with hydrogen sulfide stress corrosion. I would appreciate some suggestions on how to meet these requirements. For domestic pressure vessel steel plates, Q345R (R-HIC) offers resistance to both sulfur and hydrogen; can Q345R (HIC), which is hydrogen-resistant, be used directly? My questions: 1. From the perspective of resistance to sulfur-induced stress corrosion, Q345R (R-HIC) is the more suitable material; Q345R (HIC) only provides resistance to hydrogen. Would choosing the former be too conservative? 2. Is it Q345R? Also, is it possible to request NACE 0103 from the steel mill? Thank you; I would appreciate advice from those with experience. The relevant standards are also attached. Essentially, such NACE requirements will become increasingly common in the future, so it’s important to know how to comply with them properly.
Have you met anyone who has used NACE guidelines for material selection?
Q345R (R-HIC) is produced according to the customer’s technical specifications in the order
Processed per ASME specification for 516 GR.60 with P 0.01% and S 0.002% to prevent HIC
It is recommended to take a look at this standard: SY/T 0599-2006 Requirements for metallic materials resistant to sulfide stress cracking and stress corrosion cracking in natural gas surface facilities; it may be very helpful for material selection； The standard content here is quite detailed, with clear regulations and strong operability.
https://bbs.hcbbs.com/thread-245732-1-1.html SY/T 0599-2006 Requirements for metal materials regarding resistance to sulfide stress cracking and stress corrosion cracking in natural gas above-ground facilities. Hope this is useful to the original poster
NACE 0103 specifies technical requirements such as threshold stress and specimen type, and steel mills carry out sulfide-induced tests in accordance with these requirements. Wugang Panglong
Is Q345R (R-HIC) sheet easy to find? It seems that Q345R (HIC) materials are hard to find
What aspects are the customer requesting? Can I just write that HIC steel is required?
Both R-HIC and HIC are the same; it’s difficult to purchase them in small quantities, but it’s possible to find steel mills that can roll them out in larger batches. Some time ago we used Q245R (HIC) steel, but we couldn’t find any second-tier suppliers for it; as a result, we had to order it from several steel mills, and to this day we still haven’t used it all.
No, because clients have different available times and technical conditions, and their requirements regarding the PS content also vary