18MnMoNbbelongstothenationalstandardboilerandpressurevesselspeciallowalloystructuralsteel,theimplementationstandard:JB/T-

18MnMoNbisalow-alloystructuralsteelforboilersandpressurevessels.Ithashighstrengthandyieldratio,goodthermalworkingperformanceandmediumtemperatureperformance,simpleproductionprocess,goodweldingperformance,highheatresistance.18MnMoNbheatresistantsteelisusedinthemanufactureofhighpressureboilerdrumandlargechemicalcontainer;AlsousedforturbineandturbinegeneratorshaftandAC-DCmotorshaft.

18MnMoNb化学成分如下图：