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 standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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