5'' rolling & forged steel balls for sag mill

Brand

Material

C

Mn

Si

Cr

S

P

V

TITLE-1

50MN

0.48-0.56

0.70-1.0

0.17-0.37

≤0.25

≤0.035

≤0.035

TITLE-2

60MN

0.57-0.65

0.70-1.0

0.17-0.37

≤0.25

≤0.030

≤0.030

TITLE-3

65MN

0.60-0.70

0.70-1.20

0.17-0.37

≤0.25

≤0.030

≤0.030

TITLE-4

75Mn

0.72-0.92

0.70-1.20

0.17-0.37

≤0.25

≤0.030

≤0.030

TITLE-5

75MnCr(B2)

0.72-0.85

0.70-1.20

0.17-0.37

0.42-0.85

≤0.030

≤0.030

TITLE-6

B3

0.5-0.65

0.4-1.0

1.4-1.8

0.9-1.2

≤0.030

≤0.030

0.1-0.2

Brand

Impact Test AK.J/cm2

Endurance Test Times(5m)

Surface Hardness

Core Hardness

TITLE-1

≥12

≥10000

≥56

≥48

TITLE-2

≥13

≥10000

≥58

≥50

TITLE-3

≥15

≥12000

≥60

≥50

TITLE-4

≥17

≥12000

≥62

≥55

TITLE-5

≥16

≥12000

≥60

≥60

TITLE-6

≥17

≥12000

≥60

≥50