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18MnMoNbbelongstothenationalstandardboilerandpressurevesselspeciallowalloystructuralsteel,theimplementationstandard:JB/T-
18MnMoNbisalow-alloystructuralsteelforboilersandpressurevessels.Ithashighstrengthandyieldratio,goodthermalworkingperformanceandmediumtemperatureperformance,simpleproductionprocess,goodweldingperformance,highheatresistance.18MnMoNbheatresistantsteelisusedinthemanufactureofhighpressureboilerdrumandlargechemicalcontainer;AlsousedforturbineandturbinegeneratorshaftandAC-DCmotorshaft.
18MnMoNb化学成分如下图: