Ferro Manganese (FeMn)

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Ferro Manganese (FeMn)

Manganese alloys include various ferromanganese and silicomanganese grades. High-carbon ferromanganese (HCFeMn) with a manganese content of 70-80 wt.% and a carbon content of 6-7 wt.% is the most widely used ferroalloy in terms of quantity. Ferromanganese alloys are produced by carbothermic reduction of ores containing iron and manganese oxide in a smelting-reduction furnace. During the production process, slags with a high content of manganese oxide are formed, which can be refined in further process steps to ferro-silicon manganese, low-carbon ferro-manganese (LCFeMn) or to manganese metal

Physical Properties

General

The melting point and density of ferromanganese depends on its manganese and carbon content

Abrasion

good resistance to abrasion

Corrosion

good resistance to corrosion

Magnetism

high magnetism

 

High carbon FeMn75

Medium carbon FeMn80

Low carbon FeMn85

Density

7,3 g/cm³

0,264 Ib/in³

7,4 g/cm³

0,267 Ib/in³

7,3 g/cm³

0,264 Ib/in³

Melting point

1070-1260 °C

1958-2300°F

1250-1260 °C

2282-2300°F

1250-1260 °C

2282-2300°F

The DIN standard of Ferro Manganese

Designation

Material name

Composition, as percentages by mass

 

 

Mn1)

C

Fe

N

P

S

Si

Ti

V

 

 

 

Ferro- manganese

Low carbon grade

FeMn85C01

Min.

80

0,05

-

-

-

-

-

-

-

Max.

92

0,5 2)

-

-

0,25

0,03

1,0 3)

0,02

0,02

Low phosphorus and low carbon

grade

 

FeMn85C01P015

Min.

80

0,05

-

-

-

-

-

-

-

Max.

92

0,5 2)

-

-

0,15

0,03

1,0 3)

0,02

0,02

Nitrogen- containing low

carbon grade

 

FeMn85NC01

Min.

80

0,05

-

2,0 3)

-

-

-

-

-

Max.

92

0,52)

-

2,5 3)

0,15

0,03

1,0 3)

0,02

0,02

Nitrogen-

Min.

80

0,05

-

2,0 3)

-

-

-

-

-

containing low

carbon and low

FeMn85NC01P015

 

 

 

 

 

 

 

 

 

 

Max.

92

0,52)

-

2,5 3)

0,15

0,03

1,0 3)

0,2

0,2

phosphorus grade

 

 

 

 

 

 

 

 

 

 

Medium carbon

FeMn80C1

Min.

75

0,5

-

-

-

-

-

-

-

grade

Max.

85

2,0 2)

-

-

0,10 4)

0,03

1,0 3)

0,02

0,02

Nitrogen-

Min.

80

0,5

-

1,0 3)

-

-

-

-

-

containing

medium carbon

FeMn85NC1

 

 

 

 

 

 

 

 

 

 

Max.

90

2,0 2)

-

2,0 2)

0,25 4)

0,03

1,0 3)

0,02

0,02

grade

 

 

 

 

 

 

 

 

 

 

High carbon

FeMn75C7

Min.

75

6

-

-

-

-

-

-

-

grade

Max.

80

8

-

-

0,25

0,03

1,0 5)

0,02

0,02

Low phosphorus,

FeMn75C7P015

Min.

75

6

-

-

-

-

-

-

-

high carbon grade

Max.

80

8

-

-

0,15

0,03

1,0 5)

0,02

0,02