Casting grinding ball
| Chemical Components |
| Type |
Chemical components |
| C |
Si |
Mn |
Cr |
Mo |
Cu |
P |
S |
| Low-Cr |
1.8-3.3 |
≤1.5 |
0.3-1.5 |
1-3 |
≤1.0 |
≤0.8 |
≤0.10 |
≤0.10 |
| Medium-Cr |
1.8-3.3 |
≤1.2 |
0.3-1.5 |
4-9 |
≤1.5 |
≤0.8 |
≤0.10 |
≤0.10 |
| High-Cr |
1.8-3.3 |
≤1.2 |
0.3-1.5 |
10-18 |
≤1.0 |
≤1.2 |
≤0.10 |
≤0.06 |
| Superhigh-Cr |
1.8-3.3 |
≤1.2 |
0.3-1.5 |
19-35 |
≤2.0 |
≤1.2 |
≤0.10 |
≤0.06 |
| Mechanical Properties and Microstructure |
| Type |
Hardness |
Falling times |
Microstructure |
Impact Toughness |
| Low-Cr |
≥45 |
≥8000 |
M+C |
≥6 |
| Medium-Cr |
≥50 |
≥12000 |
M+C |
≥6 |
| High-Cr |
≥58 |
≥15000 |
M+C |
≥6 |
| Superhigh-Cr |
≥60 |
≥22000 |
M+C |
≥6 |
| P-Pearlite C-Carbide M-Martensite |
| Nominal Diameter |
Diameter Tolerance |
Weight of Single Ball In Average |
Numbers of Per Ton Ball In Average |
| (mm) |
(Inch) |
(mm) |
(g) |
|
| 20 |
0.75'' |
+2
-1 |
32 |
31250 |
| 25 |
1'' |
64 |
15625 |
| 30 |
1.25'' |
110 |
9090 |
| 40 |
1.5'' |
263 |
3802 |
| 50 |
2'' |
513 |
1949 |
| 60 |
2.5'' |
+3
-2 |
888 |
1126 |
| 70 |
2.75 |
1410 |
709 |
| 80 |
3.25'' |
2104 |
475 |
| 90 |
3.5'' |
2996 |
333 |
| 100 |
4'' |
4110 |
243 |
| 110 |
4.5'' |
+4
-2 |
5457 |
182 |
| 120 |
4.75'' |
7102 |
140 |
| 130 |
5'' |
9030 |
110 |
| 140 |
5.5'' |
+4
-3 |
11278 |
88 |
| 150 |
6'' |
13871 |
72 |
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FAQ
1. Which kind of steel balls that you produce?
Our main products are high chrome cast grinding balls, forged balls, grinding cylpebs.
2. What's your warranty?
1 year.
3. Can you provide free sample?
Yes, we are glad to supply free samples which quantity is less than 10kgs. But usually the courier fee should be paid by customer.
4. How about your quality control?
In order to ensure the quality, we have strict quality control system.
a) We will test when purchase the raw materials.
b) We will test the products when finished.
5. What's your wear rate and breakage rate?
In different application areas, the wear rate is different. But the breakage rate is less than 0.5%.
6. Do you have any certificate?
Yes, our company has ISO 19001:2008 certificate.
We could also supply customer the Test report, SGS by third party.
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