While there are many different ductile iron specifications, foundries routinely offer 3 common grades;
| PHYSICAL AND MECHNICAL PROPERTIES | ASTM A536, GRADE 64-40-18 | ASTM A536, GRADE 65-45-12 | ASTM A536, GRADE 80-55-06 |
| Tensile Strength, min, psi | 60,000 | 65,000 | 80,000 |
| Tensile Strength, min, Mpa | 414 | 448 | 552 |
| Yield Strength, min, psi | 40,000 | 45,000 | 55,000 |
| Yield Strength, min, Mpa | 276 | 310 | 379 |
| Elongation in 2 in. or 50 mm, min % | 18 | 12 | 6 |
| Density lb/in3 | 0.256 | 0.256 | 0.256 |
| Density g/cm3 | 7.1 | 7.1 | 7.1 |
| Melting Temputure (Degrees F) | 2,100 - 2,190 | 2,100 - 2,190 | 2,100 - 2,190 |
| Melting Temputure (Degrees C) | 1,150 - 1,200 | 1,150 - 1,200 | 1,150 - 1,200 |
| Compressive Strength Ksi | 429 | 429 | 429 |
| Compressive Strength Mpa | 2960 | 2960 | 2960 |
| UNS | F32800 | F33100 | F33800 |