This specification applies to SA516 Gr60 steel plate (HIC), SA516 Gr60 steel plate (R-HIC), SA516 Gr65 steel plate (HIC), SA516 Gr65 steel plate (R-HIC) and SA516 Gr70 steel plate (HIC), SA516 for use in acidic environments with a thickness of <165mm Inspection and acceptance of Gr70 (R-HIC) steel plates.
The grades of sulfide re-corrosion-resistant steel plates added as sulfide stress corrosion (SSCC) inspection items are expressed by SA516 Gr60 steel plate (R-HIC), SA516 Gr65 steel plate (R-HIC) and SA516 Gr70 steel plate (R-HIC). In order to meet the different requirements of users and facilitate production management, the S and P requirements for steel grades are divided into three levels.
SA516 Gr60 steel plate(HIC)-I refers to the steel grade SA516 Gr60, the corrosion test is only for hydrogen-induced cracking test (HIC), and the composition requires melting analysis P≤0.015, S≤0.003: finished product analysis P≤0.015, S≤0.004.
SA516 Gr60 steel plate (R-HIC)-I refers to the steel grade SA516 Gr60 . The corrosion test is performed for hydrogen-induced cracking (HIC) and sulfide stress corrosion (SSCC) inspection. The composition requires melting analysis P≤0.015, S≤0.003; finished product Analysis P≤0.015, S≤0.004.
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