Q345R steel is a special plate for pressure vessels with a yield strength of 345MPa. It has good comprehensive mechanical properties and process performance. The phosphorus and sulfur content are slightly lower than the low-alloy high-strength steel plate Q345 (16Mn) steel. In addition to the tensile strength and elongation requirements being higher than those of Q345 (16Mn) steel, the impact toughness is also required to be ensured. It is the most widely used and most widely used steel plate for pressure vessels in my country.
Q345R (R-HIC)I refers to the steel grade Q345R. The corrosion test is hydrogen-induced cracking (HIC) and sulfide stress corrosion (SSCC). The composition requires melting analysis P ≤ 0.015, S ≤ 0.003; finished product analysis P ≤0.015,S≤0.004
Q345RHIC requires HIC hydrogen-induced cracking test. Q345RR-HIC requires HIC hydrogen-induced cracking test and SSCC hydrogen sulfide resistance test. Q345RHIC and Q345RR-HIC test environment: A solution HIC steel (HIC-A) and B solution HIC steel (HIC-B) Q345RHIC and Q345RR-HIC test items: tensile, bending, thickness direction properties, grain size, Brinell Hardness, ultrasonic flaw detection, HIC test, impact test, high temperature tensile test, SSCC test, melting analysis, finished product analysis.
