This specification covers a group of white cast irons that have been alloyed to secure high resistance to abrasive wear in the applications of the mining, milling, earth-handling, and manufacturing industries. 1.2 Simple and low-alloy white cast irons that consist essentially of iron carbides and pearlite are specifically excluded from this specification.
| Class and Type | Designation |
|---|---|
| Class 1 Type A | Ni-Cr-Hc |
| Class 1 Type B | Ni-Cr-Lc |
| Class 1 Type C | Ni-Cr-GB |
| Class 1 Type D | Ni-Cr-GB |
| Class 2 Type A | 12 % Cr |
| Class 2 Type B | 15 % Cr-Mo |
| Class 2 Type D | 20 % Cr-Mo |
| Class 3 Type A | 25 % Cr |