Introduction of 20MnHR-AR nuclear power steel

20MnHR-AR is nuclear power steel. 20MnHR-AR steel heat treatment delivery state is normalized, and 20MnHR steel plate is used for the second and third level equipment of the pressurized water reactor nuclear power plant.

20MnHR-AR nuclear power steel chemical element, finished product analysis:
C≤0.2; Si: 0.2-0.5; Mn: 1-1.6; P:≤0.015 S:≤0.012; Ni:≤0.3; Cr:≤0.25; Mo≤0.1; Cu≤0.3; Nb≤0.015; V≤0.02 .

20MnHR-AR nuclear power steel size, shape, weight and tolerance:
The size, shape, weight and allowable tolerance of 20MnHR-AR steel plate shall comply with the provisions of GB/T 709 standard.
The thickness tolerance of 20MnHR-AR is performed according to the B or C type of GB/T709.