Chemical composition of American standard high manganese steel

grade of steel

Chemical composition quality fraction (%)

C

Mn

Si

S

P

else

Ab

1.05～1.35

≥11.0

≤1.0

-

≤0.07

-

B-1

0.9～1.05

11.5～11.4

≤1.0

-

≤0.07

-

B2

1.05～1.2

11.5～11.4

≤1.0

-

≤0.07

-

B-3

1.12～1.28

11.5～11.4

≤1.0

-

≤0.07

-

B-4

1.2～1.35

11.5～11.4

≤1.0

-

≤0.07

-

C

1.05～1.35

11.5～11.4

≤1.0

-

≤0.07

Cr：1.5～2.5

D

0.7～1.3

11.5～11.4

≤1.0

-

≤0.07

Ni：3.0～4.0

E₁

0.7～1.3

11.5～11.4

≤1.0

-

≤0.07

Mo：0.9～1.20

E₂

1.05～1.45

11.511.4

≤1.0

-

≤0.07

Mo：1.8～2.10

F

1.05～1.35

6.0～8.0

≤1.0

-

≤0.07

Mo：0.9～1.20