Introduction to 18MnD5 steel plate

18MnD5 and 16MnD5 belongs to nuclear steel. It is used for the production of safety injection box of nuclear equipment.

Detection level of 18MnD5 steel plate: S3E4 of EN10160

18MnD5 steel plate delivery status: quenching+tempering

Rolling process description of 18MnD5 steel plate:
Raw scrap iron and raw steel → electric furnace 90 or 100 tons electric arc → LF furnace molten steel polishing → ladle vacuum treatment VD or VOD → mold casting/continuous casting → large slab electroslag furnace → heating continuous and soaking furnace → steel plate rolling 4100 and 4200 mm mill → flaw detection and steel plate heat treatment → steel plate quality inspection.

Chemical composition of 18MnD5 steel plate (melting analysis):
C: 0.2, Si: 0.10-0.30, Mn: 1.15-1.60, P: ≤0.012, S: ≤0.012, Al: ≥0.04, Cr: ≤0.25, Mo: 0.45-0.55, Ni: 0.50-0.80

Application range of 18MnD5 steel plate:
18MnD5 is mainly used for making evaporator, pressurizer, pressure vessel, head and support components in nuclear power engineering.