China 100mm Mining Machinery Ball Mill B2 Steel Grinding Forging Ball

Chemical Composition :good qualityhigh chrome copper mining casting steel ball

Chemical Composition

Name

Designation

Chemical Composition(%)

C

Si

Mn

Cr

P

S

Grinding media Balls

20Cr26

2.0-3.3

≤1.2

0.3-1.5

>23-30

≤0.10

≤0.06

20Cr20

2.0-3.3

≤1.2

0.3-1.5

>18-23

≤0.10

≤0.06

20Cr15

2.0-3.3

≤1.2

0.5-1.5

>14-18

≤0.10

≤0.06

20Cr12

2.0-3.3

≤1.2

0.5-1.5

>10-14

≤0.10

≤0.06

20Cr8

2.1-3.3

<2.2

0.3-1.5

7-10

≤0.10

≤0.06

20Cr5

2.1-3.3

≤1.5

0.3-1.5

4-6

≤0.10

≤0.10

20Cr2

2.0-3.6

≤1.5

0.3-1.5

1-3

≤0.10

≤0.10

Physical Property :good quality high chrome copper mining casting steel ball

Name

Destanation

Surface Hardness

Core
Hardness

MicrostHigh mechanical middle mill grinding media chrome casting iron ballsructure

Times of Falling Ball

(HRC)

(HRC)

Grinding mediaBall

ZQCr26

>58

>56

M+C

≥15000

ZQCr20

>58

>56

M+C

≥15000

ZQCr15

>58

>56

M+C

≥15000

ZQCr12

>58

>56

M+C

≥15000

ZQCr8

>50

>47

P+C

≥10000

ZQCr5

>48

>45

P+C

≥10000

ZQCr2

>46

>45

P+C

≥10000

Chemical Composition :good qualityhigh chrome copper mining casting steel ball

Chemical Composition

Name

Designation

Chemical Composition(%)

C

Si

Mn

Cr

P

S

Grinding media Balls

20Cr26

2.0-3.3

≤1.2

0.3-1.5

>23-30

≤0.10

≤0.06

20Cr20

2.0-3.3

≤1.2

0.3-1.5

>18-23

≤0.10

≤0.06

20Cr15

2.0-3.3

≤1.2

0.5-1.5

>14-18

≤0.10

≤0.06

20Cr12

2.0-3.3

≤1.2

0.5-1.5

>10-14

≤0.10

≤0.06

20Cr8

2.1-3.3

<2.2

0.3-1.5

7-10

≤0.10

≤0.06

20Cr5

2.1-3.3

≤1.5

0.3-1.5

4-6

≤0.10

≤0.10

20Cr2

2.0-3.6

≤1.5

0.3-1.5

1-3

≤0.10

≤0.10

Physical Property :good quality high chrome copper mining casting steel ball

Name

Destanation

Surface Hardness

Core
Hardness

MicrostHigh mechanical middle mill grinding media chrome casting iron ballsructure

Times of Falling Ball

(HRC)

(HRC)

Grinding mediaBall

ZQCr26

>58

>56

M+C

≥15000

ZQCr20

>58

>56

M+C

≥15000

ZQCr15

>58

>56

M+C

≥15000

ZQCr12

>58

>56

M+C

≥15000

ZQCr8

>50

>47

P+C

≥10000

ZQCr5

>48

>45

P+C

≥10000

ZQCr2

>46

>45

P+C

≥10000