Energy & PowerPower Generation Auxiliaries
Diesel generator / emergency generator housing castings
ISO 3046 (diesel gen sets). GCI cylinder block: EN-GJL-250 with pearlitic microstructure. Machining tolerances for bore and crankshaft journals critical.

Specifications
Material
Grey Cast Iron GJL-250 (crankcase / cylinder block); Cast Steel (support frames)
Grades
GJL-250
Material Class
Gray IronCast Steel
Applicable Standards
ISO 3046
Common Processes
Green sand (GCI cylinder blocks); resin sand (CS frames)
NDT & Inspection
MT; pressure test (water jacket); dimensional; hardness
Typical Specs & Notes
ISO 3046 (diesel gen sets). GCI cylinder block: EN-GJL-250 with pearlitic microstructure. Machining tolerances for bore and crankshaft journals critical.
⚠ Caveats
Machining tolerances for bore and crankshaft journals critical.