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Ferromanganese grade FeMn 78


High carbon ferromanganese is used to produce special manganese alloys. In its chemical contents and physical properties, it should correspond to the requirements of DSTU 3547 – 97.Grade of the alloy base and chemical composition of ferromanganese should correspond to the requirements of the Tables 1 and 3 below.

Group

Weight percentage of an element, %

Alloy base

Manganese

Carbon

Silicon

Phosphor

Sulphur

А

B

No more than

Low carbon

FeMn90

85,0

to

95,0 incl.

0,5

1,8

0,05

0,30

0,03

Middle carbon

FeMn88

Св. 85,0

to

95,0 incl.

2,0

3,0

0,10

0,40

0,03

High carbon

FeMn78

 

FeMn70

Св. 75,0 to

82,0 incl.

Св. 65,0 to

75,0 incl./p>

7,0

 

7,0

6,0

 

6,0

0,05

 

0,30

0,70

 

0,70

0,03

 

0,03

Note. Letters in the alloy base grade mean:

Fe – ferrum (iron), Mn – manganese; figures following the letters – an average mass manganese weight

in integral numbers.

Alloy base grade

Weight percentage of elements, %

Manganese,

No more than

Carbon

Silicon

Phosphor

Sulphur

Nitrogen

No more than

FeMnN-SmL

FeMnN-ST1

FeMnN-ST2

80,0

78,0

78,0

0,5

0,5

2,0

2,0

2,0

2,0

0,15

0,30

0,35

0,03

0,03

0,03

1,5 – 2,5

4,0 – 8,0

4,0 – 8,0

Note: Letters in the alloy base grade mean:

FeMn – ferromanganese, N – Nitrogen, SmL – smelted, ST – sintered.