Mill Grinding Balls, Grinding Cylpebs and Grinding Rods
Low Chrome Alloy Casting Steel Cylpebs ZQCr2
PRODUCT PARAMETERS
Description
ZQCr2 is a type of low-chrome alloy casting steel used for cylpebs, which are grinding media commonly used in ball mills and cement mills for crushing and grinding materials.
Diameter tolerance and Length tolerance
| Diameter（mm) | 8×10 | 10×12 | 12×14 | 14×16 | 16×18 | 18×20 | 20×25 |
| 25×30 | 30×35 | 35×40 | 40×45 | 45×50 | 50×55 | 55×60 | |
| Diameter tolerance(mm) | +1，-1 | ||||||
| Length tolerance（mm） | +2，-2 | ||||||
Specification
| Material Gr. | Diameter(mm) | Hardness(HRC) | Breakage rate | Impact value(J/cm²) | Drop times(times) | Micro structure |
| ZQCr2 | 17-150 | >45 | <1% | >1.5 | ≥8000 | P+C |
Chemical composition
| Material Gr. | Chemical composition（%） | ||||||||
| C | Si | Mn | Cr | Mo | Cu | Ni | P | S | |
| ZQCr2 | 2.1-3.6 | 1.5max | 0.3-1.5 | 1.0-3.0 | 0-1.0 | 0-0.8 | － | ≤0.10 | ≤0.10 |
Material Composition: Low chromium (Cr) alloy steel
Hardness: Generally ranges between HRC 45-55, depending on heat treatment
Wear Resistance: Higher than conventional steel but lower than high-chrome alloy media
Impact Toughness: Better than high-chrome cast media, reducing breakage in the mill
Application: Used in cement plants, mining, power plants, and other grinding applications
Advantages of ZQCr2 Cylpebs:
✅ Higher grinding efficiency than traditional steel balls due to better contact points
✅ Lower wear rate, extending service life compared to non-alloyed steel
✅ Cost-effective alternative to high-chrome grinding media
✅ Good impact resistance, reducing breakage
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