1.1 This specification covers ten grades of ferromanganese, designated as follows:
| Standard ferromanganese | Grade A |
| Grade B | |
| Grade C | |
| Medium-carbon ferromanganese | Grades A,B,C, and D |
| Nitrided | |
| Low-carbon ferromanganese | Grade A |
| Grade B |
1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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