Cast Iron

Cast iron includes several metallurgical families with distinct mechanical properties and manufacturing characteristics. Material selection depends on required strength, ductility, machinability, vibration damping, and operating conditions.

Common grades include:

• EN-GJL-250: A gray cast iron widely used for machine beds, housings, and structural castings.
• EN-GJS-400-15: A ductile cast iron offering improved elongation and toughness compared with gray iron.
• EN-GJS-500-7: A ductile iron grade used for mechanically loaded components requiring higher strength.
• ASTM A48 Class 40: A gray iron specification used for industrial cast components.

Typical manufacturing methods include sand casting, CNC milling, CNC turning, drilling, boring, and surface grinding.

Gray cast iron is often selected for vibration damping and machinability, while ductile iron is preferred where improved tensile strength and toughness are necessary.

Applications include machine tool structures, pump housings, gearbox casings, agricultural machinery, engine components, and industrial frames.

Design considerations include wall thickness, casting shrinkage, machining allowances, internal cavities, and access for inspection.

Buyers should specify the material grade, casting standard, 3D model, dimensioned drawing, quantity, critical tolerances, and required machining operations.

Inspection requirements may include chemical analysis, tensile testing, hardness verification, dimensional measurement, and nondestructive testing when applicable.

Metraxio supports custom cast iron manufacturing RFQs covering casting, machining, and inspection requirements.