上海充通大学 材料科学与工程学院 School of Materials Science and Enginecring.SITU Background Materials used in nuclear power equipments Primary Circuit Secondary Circuit Anti-vibration bars: Aloy600,4055 Steam dryersi Carbon steel MSR: Turbine: Vessel:alloy steel 304SS 439 ferritic steel ·Roter:low allo时steel Cad:308.309ss ·Blades:17-4PH.403ss SG vessel wall: Welds: Blade attach:low alloy steel Low alloy steel .Diaphram,Cr steel Vessel penetrations ·SS toS5:30855 ·Steel to SS:308.309 Steam Generator tubes CRDM housing: Generator: Retaining ring: Alloy 600MA.690TT high strength,high v√Welds toughness Closure studs: ·Copper conductors Alloy steel Vessel: ·Alley stcel ·Cad:308.309ss Condenser tubes: Tior SS tubes Control red: ，SS clad Condenser tubesheet: ·B,C+SS poison Cathodie protection Core structurals: or titanium clad 304SS Condenser structural: High strengt在： Water side:carbon steel A286.X750 Fuel claddingr Primary piping: 304.31655 Primary plenum clad: 308.309S5 Pump material: Divider plate: SG tubesheet: Preheater tubing: ·iSA26174PH关75知 Alley 600 Low alloy steel in4ss ·Structural:304,316Ss Impeller housing:cast stainless SG tubing: Tube supports: Sccondary feedwater piping: Alloys 600MA. 40555 Carbon steel 600TT,690TT.00 Welds: Steel to SS:82.182 Schematic of the primary and secondary circuits of a pressurized water reactor and materials of construction(Staehle R.Personal communication.)Background Materials used in nuclear power equipments  Vessel penetrations  Steam Generator tubes  Welds Schematic of the primar y and secondar y circuits of a pressurized water reactor and materials of construction(Staehle R. Personal communication.)