Ductile Iron Casting Background
China Factory Direct

Custom Ductile Iron Casting Services

High-strength, impact-resistant spheroidal graphite iron parts. ISO 9001 certified foundry delivering directly to USA & Europe.

Why Choose Ductile Iron (SG Iron)?

Ductile iron, also known as spheroidal graphite (SG) iron or nodular cast iron, offers a unique combination of strength, ductility, and toughness. Unlike grey iron, the graphite in ductile iron is in the form of nodules rather than flakes, which inhibits crack creation and provides enhanced impact resistance.

Our Capabilities

  • Grades: ASTM A536 60-40-18, 65-45-12, 80-55-06, 100-70-03
  • Weight Range: 0.5 kg to 5,000 kg
  • Processes: Sand Casting, Shell Molding, Lost Foam
  • Tolerance: ISO 8062 CT8-CT10
  • Machining: Full CNC machining services available
  • Surface: Painting, Powder Coating, Galvanizing

Common Applications

Hydraulic Parts
Automotive Components
Pump Housings
Valve Bodies
Gear Boxes
Agricultural Machinery
Construction Equipment
Pipe Fittings

Material Grades

Grade (ASTM)Tensile (min)
60-40-1860 ksi
65-45-1265 ksi
80-55-0680 ksi
100-70-03100 ksi
120-90-02120 ksi

Need Help?

Our engineers can help you select the right grade for your application.

Ready to Start Your Project?

Get a competitive quote from a trusted China factory within 24 hours. Send us your drawings or samples today.