1.Typical ductile cast iron classes, designated by ASTM A536 are:
|
Class |
Tensile Strength |
Brinell Hardness |
Elongation % |
|
ASTM A536 100-70-03 |
100,000 |
228 - 302 |
3 |
|
ASTM A536 80-55-06 |
80,000 |
187 - 255 |
6 |
|
ASTM A536 Grade 65-45-12 |
65,000 |
156 - 217 |
12 |
|
ASTM A536 60-40-18 |
60,000 |
156 - 187 |
18 |
2.Typical gray cast iron classes, designated by ASTM A48 are:
| Class | Tensile Strength (psi) | Brinell Hardness Range |
| Astm A48 Class 25 | 25,000 | 149 - 229 |
| Astm A48 Class 30 | 30,000 | 187 - 241 |
| Astm A48 Class 35 | 35,000 | 207 - 255 |
| Astm A48 Class 40 | 40,000 | 217 - 269 |