Q345HD nuclear power steel

Q345HD belongs to the category of nuclear power steel in carbon steel plates, where "Q" represents the yield of the steel plate, "345" represents its yield, which is the small yield strength value in the production regulations, and "HD" is the initial pinyin capital letter of the word nuclear power. . Q345HD has two grades, namely: Q345HD1 and Q345HD2

Q345HD steel plate is a steel plate for nuclear power. Consider receiving the effect of neutron radiation for a long time. Because the more alloy elements, the weaker the overall anti-neutron radiation ability. Generally, the sparse alloy element steel with strong anti-radiation ability is selected. Mn-Ni-Mo series low-alloy high-strength steel.
Q345HD steel plate executive standard: GB/T 30814-2014
Brands included in this standard: Q205HD, Q230HD, Q250HD, Q275HD, Q345HD1, Q345HD2, Q420HD.

Main properties of Q345HD steel plate
Nuclear power steel should have good structural stability, weldability, cold and hot workability and nuclear fatigue strength at working temperature. It should have good resistance to radiation embrittlement sensitivity under reactor irradiation conditions, but this grade of The steel plate generally also has certain requirements for its Z-direction performance. Generally, steel for nuclear power has strict requirements on chemical composition.

Q345HD steel plate delivery status:
Steel plates should be delivered in hot rolled, hot rolled and tempered, normalized, normalized and tempered states

Q345HD steel plate application range
Q345HD nuclear power steel should have good structural stability, weldability, cold and hot workability at working temperature, nuclear fatigue strength, and good resistance to radiation embrittlement sensitivity under reactor irradiation conditions, but this grade The steel plate generally also has certain requirements for its Z-direction performance. Therefore, this grade of steel plate will be frequently used in the manufacture of nuclear power equipment.