Energy & PowerSteam Turbine
Turbine nozzle / diaphragm castings (fixed vane carrier)
Profile accuracy critical for thermodynamic performance. CA15 for corrosion resistance in wet steam LP stages.
Specifications
Material
ASTM A217 WC9 / CA15 (13Cr SS) for wet steam stages
Grades
WC9;CA15
Applicable Standards
ASTM A217
Service Conditions
corrosion
Common Processes
Investment casting (nozzle profiles); resin sand (diaphragm ring)
NDT & Inspection
RT / PT; dimensional (vane throat width CMM); hardness
Typical Specs & Notes
Profile accuracy critical for thermodynamic performance. CA15 for corrosion resistance in wet steam LP stages.
⚠ Caveats
Profile accuracy critical for thermodynamic performance.