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SG Iron Castings

Spheroidal Graphite (SG) Iron, also known as Ductile Iron, offers the strength of steel with the process advantages of cast iron. Explore our grade-wise technical data.

SG Iron grades we cast
400/15 Ferritic 500/7 Ferritic–Pearlitic 600/3 Pearlitic 700/2 Pearlitic
Grade
400/15
High Ductility

International Standards

India
IS 1865 400/15
Europe
EN-GJS-400-15 (GGG 40)
USA
ASTM A536 60-40-18
Japan
JIS G5502 FCD400

Chemical Composition

Carbon
3.40 - 3.85%
Silicon
2.30 - 3.10%
Manganese
0.10 - 0.30%
Magnesium
0.03 - 0.05%
Phosphorus
0.05% Max

Key Characteristics

  • Highest ductility and toughness
  • Excellent impact resistance
  • Superior machinability
  • Good magnetic permeability
Typical Applications

Pressure pipes, valves, automotive suspension parts, and impact-resistant housings.

Grade
500/7
High Ductility

International Standards

India
IS 1865 500/7
Europe
EN-GJS-500-7 (GGG 50)
USA
ASTM A536 70-50-05
Japan
JIS G5502 FCD500

Chemical Composition

Carbon
3.40 - 3.80%
Silicon
2.20 - 2.80%
Manganese
0.30 - 0.50%
Magnesium
0.03 - 0.06%
Phosphorus
0.05% Max

Key Characteristics

  • Balanced strength and ductility
  • Good wear resistance
  • Reliable fatigue strength
  • Standard engineering grade
Typical Applications

Crankshafts, gears, connecting rods, and general machinery components.

Grade
600/3
High Ductility

International Standards

India
IS 1865 600/3
Europe
EN-GJS-600-3 (GGG 60)
USA
ASTM A536 80-60-03
Japan
JIS G5502 FCD600

Chemical Composition

Carbon
3.20 - 3.60%
Silicon
2.20 - 2.60%
Manganese
0.40 - 0.70%
Magnesium
0.03 - 0.06%
Phosphorus
0.05% Max

Key Characteristics

  • High tensile strength
  • Excellent wear resistance
  • Moderate ductility
  • High surface hardness
Typical Applications

Heavy-duty gears, rollers, camshafts, and high-stress structural parts.

Grade
700/2
High Ductility

International Standards

India
IS 1865 700/2
Europe
EN-GJS-700-2 (GGG 70)
USA
ASTM A536 100-70-03
Japan
JIS G5502 FCD700

Chemical Composition

Carbon
3.20 - 3.50%
Silicon
2.00 - 2.40%
Manganese
0.60 - 0.90%
Magnesium
0.04 - 0.07%
Phosphorus
0.05% Max

Key Characteristics

  • Maximum tensile strength
  • Highest wear resistance
  • High rigidity and hardness
  • Lower impact resistance
Typical Applications

Heavy-duty transmission parts, high-load gears, and specialized industrial tools.

Precision SG Iron Casting

Our foundry is equipped with specialized magnesium treatment facilities to ensure perfect nodularity in every SG Iron casting.

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