Q245R (HIC) steel plate refers to the steel grade Q245R steel plate resistance to hydrogen sulfide corrosion steel plate, corrosion test only do resistance to hydrogen cracking test (HIC), composition requirements melting analysis P≤0.015, S≤0.003;
Finished product analysis P≤0.015, S≤0.004.
Q245R steel plate shall be delivered under normalizing condition. Sample condition: Q245R steel plate shall be subjected to simulated post-weld heat treatment for its test samples. The recommended simulated post-weld heat treatment temperature is 620±10℃, and the holding time is: 8 hours, the temperature is above 400℃, temperature rise and cooling rate ≤150℃/h, if not in conformity with the recommended heat treatment system, the specific simulated post-welding heat treatment system is indicated in the contract.
Q245R steel plate simulated post-welding heat treatment system; High temperature stretching of Q245R steel plate (negotiated by both sides); Low temperature impact of Q245R steel plate (negotiated by both sides); Inspection rules for anti-hydrogen induced cracking (HIC) test of Q245R steel plate. These additional conditions need to be stated in the contract.
