Specifications
Ductile iron is often an economical alternative to replace steel fabrications or cast iron with increased strength, improved performance, reduced cost and better looking parts. The wide range of physical properties available as-cast or heat treated makes it the ideal material for a wide variety of applications.
Ductile (Nodular) Iron Specifications
| Specifying Body (¹) | Spec No. (²) | Use | Class or Grade | Min.Tensile psi (¹³) | Min., Yield psi (14) | % Elongation | Heat Treatment | Other Requirements |
| ASTM | A536-84 | Shock resistance at low temperatures | 60-40-18 | 60,000 | 40,000 | 18 | May require a full Anneal | Chemical composition is subordinate to mechanical properties; however, the content of any chemical element may be specified by mutual agreement. |
| Most commonly used grade. | 65-45-12 | 65,000 | 45,000 | 12 | ||||
| Suitable for flame and induction hardening. | 80-55-06 | 80,000 | 55,000 | 6 | ||||
| For strength and wear resistance. | 100-70-03 | 100,000 | 70,000 | 3 | Quench Temper | |||
| Maximum strength and wear resistance. | 120-90-02 | 120,000 | 90,000 | 2 | Usually Quenched | |||
| Special Applications | 60-42-10 70-50-05 80-60-03 | 60,000 70,000 80,000 | 42,000 50,000 60,000 | 10 5 3 | ||||
| ASTM | A395-88 | Pressure containing parts for use at elevated temperatures. | 60-40-18 | 60,000 (15) | 40,000 | 18 | Ferritized by annealing | %TC, %Si, %P, %S, %C.E.(19), BHN |
| ASME | SA395 | Pressure containing parts for use at elevated temperatures | Min, Max, 3.0, 2.50, 0.08, 143, 187 |
