1.1This 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 |
1.2The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
ASTM A99-03(2014) History
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