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Ductile Iron 70-50-5
Chemical Composition
| Element | Symbol | Average Preferred Range % |
| Carbon | C | 3.4-3.9 |
| Manganese | Mn | 0.2-0.5 |
| Silicon | Si | 2.7-3.0 |
| Phosphorus | P | 0-0.07 |
| Sulfur | S | 0.03 |
| Magnesium | Mg | 0.035-0.055 |
| Copper | Cu | 0.05 |
| Chromium | Cr | 0-0.03 |
| Iron | Fe | Balance |
Mechanical Properties
| Property | Metric Values | Imperial Values |
| Tensile Strength Min | 480 MPa | 70 ksi |
| Yield Strength Min | 345 MPa | 50 ksi |
| Elongation Min % | 5% | 5% |
| Hardness (Brinell) | 160-210HB | 160-210HB |
Comparative Specifications
Applicable Casting Processes