Brand: huamin
Min. Order: 20 MT
1. Product Name: Cast iron grinding balls

2. Standard ball sizes are as follows:
Ball Diameter (nominal) mm-----(nominal) Inches
20mm 4/5 inch
25mm 1 inch
30mm 1 1/4nch
40mm 1 1/2nch
50mm 2 inch
60mm
70mm
80mm 3 1/4inch
90mm 3 1/2 inch
100mm 4 inch
110mm 4 1/4 inch
120mm 4 3/4inch

3. A full range hardness we provided in standard sizes:
Minimum Hardness:
Brinell Rockwell C Chromium (%)
BHN400 HRC 43 non-chromium
BHN480 HRC 50 Cr: 1.0~3.0
BHN560 HRC 55 Cr: 7.0~10.0
BHN615 HRC 58 Cr: 10.0~16.0; Cr: 16.0~22.0; Cr: 22.0~28.0;

4. Low Chrome cast iron balls
Chemical Elements (%): C: 2.0~3.60 Mn: 0.50-1.50; Cr: 1.0-5.0; Si: 1.5Max; P: 0.10 Max, S: 0.10 Max;

5. Middle chrome cast iron balls
Chemical Elements (%): C: 2.0~3.20 Mn: 0.50-1.50; Cr: 7.0-10.0; Si: 0.5-2.20; P: 0.10 Max, S: 0.10 Max;

6. High chrome cast iron balls
ZQCrG1--Chemical Elements (%): C: 2.0~3.20 Mn: 0.50-2.50; Cr: 10.0-16.0; Si: 1.0 Max; P: 0.10 Max, S: 0.06 Max; Cu: 1.0Max; Mo: 1.0 Max
ZQCrG2--Chemical Elements (%): C: 2.0~3.20 Mn: 0.50-2.50; Cr: 16.0-22.0; Si: 1.0 Max; P: 0.10 Max, S: 0.06 Max; Cu: 1.0Max; Mo: 1.0 Max
ZQCrG3--Chemical Elements (%): C: 2.0~3.20 Mn: 0.50-2.50; Cr: 22.0-28.0; Si: 1.0 Max; P: 0.10 Max, S: 0.06 Max; Cu: 1.0Max; Mo: 1.0 Max
Products all-round properties: High Hardness, better wear resistance, even wearing
Breakage rate of ball: 2.0% Max;
Dropping test: 8000 times minimum with 3.5 meter dropping test machine.
Impact fatigue life test: Ak. =3 J/CM2 Minimum

7. Packages: By flexible container bags (1000kg/bag), or by steel drums (850kgs-900kgs/drum)