1> Forged Grinding Ball
| Material | C | Mn | Si | Cr | S | P |
| 50Mn | 0.48-0.56 | 0.70-1.0 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| 60Mn | 0.57-0.65 | 0.70-1.0 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| 65Mn | 0.60-0.70 | 0.90-1.2 | 0.17-0.37 | ≤0.25 | ≤0.035 | ≤0.035 |
| B2 | 0.70-0.85 | 0.70-0.80 | 0.17-0.37 | 0.2-0.7 | ≤0.03 | ≤0.03 |
| 75SiMn | 0.70-0.90 | 0.70-1.20 | 0.4-0.8 | ≤0.25 | ≤0.03 | ≤0.03 |
| Wear-resistant Alloy | 0.50-0.65 | 0.4-1.0 | 1.4-1.8 | 0.9-1.2 | ≤0.03 | ≤0.03 |
2> Cast Grinding Ball
|
Material
|
C
|
Si
|
Cr
|
Mn
|
S
|
P
|
|
Cr-22-32%
|
2.0-2.8
|
≤1.0
|
22-32
|
0.5-2.0
|
≤0.06
|
≤0.08
|
|
Cr-17-22%
|
2.0-2.8
|
≤1.0
|
17-22
|
0.5-2.0
|
≤0.06
|
≤0.08
|
|
Cr-15-17%
|
2.2-3.0
|
≤1.0
|
15-17
|
0.5-2.0
|
≤0.06
|
≤0.08
|
|
Cr-11-14%
|
2.2-3.2
|
≤1.0
|
11-14
|
0.5-2.5
|
≤0.06
|
≤0.08
|
|
Cr-5-10%
|
2.1-3.2
|
≤1.2
|
5-10
|
0.5-1.5
|
≤0.06
|
≤0.08
|
|
Cr-1.5-3.%
|
2.2-3.5
|
≤1.2
|
1.5-3.0
|
0.5-1.5
|
≤0.06
|
≤0.08
|
Physical Property
1> Forged Grinding Ball
| Material | Impact Test(Ak.J/cm²) | Endurance Test Times(5m/T) |
Surface Hardness
(Φ25mm- Φ60mm)
|
Core Hardness
(Φ25mm- Φ60mm)
|
Surface Hardness
(Φ70mm- Φ100mm)
|
Core Hardness
(Φ70mm- Φ100mm)
|
Breakage |
| 50Mn | ≥12 | ≥10000 | ≥56 | ≥35 | ≥56 | ≥28 | <1% |
| 60Mn | ≥13 | ≥10000 | ≥58 | ≥38 | ≥58 | ≥29 | <1% |
| 65Mn | ≥15 | ≥12000 | ≥60 | ≥42 | ≥60 | ≥30 | <1% |
| B2 | ≥17 | ≥12000 | ≥60 | ≥52 | ≥60 | ≥50 | <1% |
| 75SiMn | ≥16 | ≥12000 | ≥60 | ≥50 | ≥60 | ≥48 | <1% |
| Wear-resistant Alloy | ≥17 | ≥12000 | ≥60 | ≥54 | ≥60 | ≥52 | <1% |
2> Cast Grinding Ball
|
Material
|
Impact
Test
Ak.J/cm
|
Endurance
Test times
(5m)
|
Hardness (HRC)
|
|||
|
Diam25-60mm
|
Diam70-100mm
|
|||||
|
Quenching
|
Unquenching
|
Quenching
|
Unquench
ing
|
|||
|
Cr-22-32%
|
≥4
|
≥10000
|
≥60
|
≥49
|
≥60
|
≥48
|
|
Cr-17-22%
|
≥4
|
≥10000
|
≥60
|
≥49
|
≥60
|
≥48
|
|
Cr-15-17%
|
≥4
|
≥10000
|
≥60
|
≥49
|
≥58
|
≥48
|
|
Cr-11-14%
|
≥3
|
≥10000
|
≥58
|
≥49
|
≥56
|
≥48
|
|
Cr-5-10%
|
≥3
|
≥8000
|
-
|
≥48
|
-
|
≥48
|
|
Cr-1.5-3.%
|
≥2
|
≥8000
|
-
|
≥48
|
-
|
≥45
|
Heated by electric stove ,the top grade raw material .10 years'experience,direct manufacturer low price
Packaging
Ton bags (1000Kg Per Bag)
Iron drums (850~920Kg Per Drum)