Energy & PowerSteam Turbine
Steam turbine casing (inner / outer, HP & LP cylinders)
ASME B31.1 / EN 13480. Cr-Mo grades: PWHT mandatory. High-temp tensile & creep rupture data per EN 10302. IBR (Indian) / TÜV / CE marking as applicable. Operating temperature up to 565°C HP.
Specifications
Material
Cr-Mo cast steel: ASTM A217 WC9 (Cr2.25Mo1) / WC6 (Cr1.25Mo0.5); ASTM A356 Gr10 for large LP casings
Grades
WC9;WC6
Material Class
Cr-MoCast Steel
Applicable Standards
ASTM A217ASTM A356 Gr10ASME B31.1EN 13480EN 10302IBR
Service Conditions
high temperature
Common Processes
Resin sand / furan no-bake (large complex geometry); shell moulding (selected sections); heat treat (N&T)
NDT & Inspection
RT (100% critical sections, ASTM E94); UT (wall thickness, internal defects); MT; hydrostatic steam test; dimensional CMM; hardness (HB 150–250)
Typical Specs & Notes
ASME B31.1 / EN 13480. Cr-Mo grades: PWHT mandatory. High-temp tensile & creep rupture data per EN 10302. IBR (Indian) / TÜV / CE marking as applicable. Operating temperature up to 565°C HP.
⚠ Caveats
Cr-Mo grades: PWHT mandatory.
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