Ferromanganese
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Alloy series
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Description
Ferro-manganese is an iron alloy composed of manganese and iron. It is classified into high-carbon ferro-manganese (C ≤ 2–8%), medium-carbon ferro-manganese (C ≤ 0.7–2%), low-carbon ferro-manganese (C ≤ 0.7–0.15%), and ultra-low-carbon ferro-manganese (C ≤ 0.15%).
Commonly used materials also include metallic manganese and silicomanganese alloys.
Ferro-manganese is used as a Decomposer and alloying additive in steelmaking, enhancing the hardness, ductility, toughness, and wear resistance of steel. It is widely used in alloy steels such as structural steel, tool steel, stainless and heat-resistant steel, and wear-resistant steel. Manganese also de-sulfurizes and reduces the harmful effects of sulfur.
Category | Grade | Chemical composition % | ||||
Mn | C | Yes | P | S | ||
less than or equal to | ||||||
High carbon | FeMn65 | 65-70 | 7.0 | 2.5 | 0.25 | 0.03 |
Medium carbon | FeMn78 | 78-82 | 2.0 | 1.5 | 0.20 | 0.03 |
Low-carbon | FeMn80 | 80-85 | 0.7 | 1.0 | 0.20 | 0.02 |
Microcarbon | FeMn84 | 84-87 | 0.05 | 0.5 | 0.03 | 0.02 |
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