The difference between SA516Gr65(HIC) and SA516Gr65(R-HIC) plate

SA516Gr65 (HIC) steel plate refers to the steel grade SA516Gr65, the corrosion test is only for hydrogen-induced cracking test (HIC), the composition requires melting analysis P≤0.015%, S≤0.003%, finished product analysis P≤0.015%, S≤0.004% ,HIC series steel usually adopts B solution, if the user requires A solution, it should be indicated in the contract.

SA516Gr65 (R-HIC) plate refers to the steel grade SA516Gr65. The corrosion test is performed for A solution hydrogen-induced cracking test (HIC) and sulfide stress corrosion (SSCC) test. The composition requires melting analysis P≤0.015%, S≤0.003%, Finished product analysis P≤0.015%, S≤0.004%, R-HIC series steel adopts A solution and does SSCC test.