FeMn
Ferro manganese is an alloy of iron and manganese containing usually about 80% manganese. Ferro manganese is used mainly to counteract the bad effects of sulfur. It also acts as a deoxidizer and combines with sulfur, thereby improving the hot-working properties of the product. It imparts metallurgical properties such as increased strength, hardness, toughness and hardenability.
This ferroalloy is divided into three groups based on carbon percentage:
- Low carbon ferromanganese
- Medium carbon ferromanganese
- High carbon ferromanganese
For general use and for the production of products with insensitivity to carbon increase, high carbon ferromanganese is used and in alloy steels used in sensitive sources and steels that will be welded, medium carbon and low carbon ferromanganese is used.
Analysis of FeMn:
| Size | 10-60 mm |
| Mn | 76% min |
| C | 6-8% |
| Si | 1.5% max |
| P | 0.25% max |
| S | 0.05% max |
