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Austenitic Ductile Iron ASTM A439 D2 58-30-8
Chemical Composition
| Element | Symbol | Average Preferred Range % |
| Carbon | C | 0-3.0 |
| Manganese | Mn | 0.7-1.25 |
| Nickel | Ni | 18-22 |
| Chromium | Cr | 1.75-2.75 |
| Silicon | Si | 2.35-2.7 |
| Magensium | Mg | 0.035-0.055 |
| Copper | Cu | 0.2 |
| Molybdenum | Mo | 0.1 |
| Iron | Fe | Balance |
Mechanical Properties
| Property | Metric Values | Imperial Values |
| Tensile Strenght Min | 58 ksi | 400 MPa |
| Yield Strenght Min | 30 ksi | 210 MPa |
| Elongation Min % | 8% | 8% |
| Hardness (Brinell) | 145-210HB | 145-210HB |
Comparative Specifications
Applicable Casting Processes