Energy & PowerGas Turbine
Compressor casing sections (axial flow compressor)
⚠ FORGING NOTE: rotating blades & discs are forged not cast. Casings are cast. Ti used only as forgings. Cr9Mo1 for high-temp compressor stages.
Specifications
Material
Cast steel ASTM A356 Gr8 / A217 C12A (Cr9Mo1) for high-temp; Ti alloys not cast – forged
Material Class
Cast Steel
Applicable Standards
ASTM A356 Gr8
Service Conditions
high temperature
Common Processes
Resin sand / investment (small sections); heat treat (Q&T)
NDT & Inspection
RT; UT; PT/MT; dimensional (CMM blade tip clearances); hardness
Typical Specs & Notes
⚠ FORGING NOTE: rotating blades & discs are forged not cast. Casings are cast. Ti used only as forgings. Cr9Mo1 for high-temp compressor stages.
⚠ Caveats
⚠ FORGING NOTE: rotating blades & discs are forged not cast.