Product Overview
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| Atmofair Cast Steel Grinding Balls are professional wear-resistant media engineered for scientific research experiments in material grinding and powder engineering. This listing is priced for ZQCr28 high chromium 58HRC nodular grade with 5 mm diameter and 1 kg net weight. The product features a controllable composition system and stable mechanical properties suitable for laboratory ball mill planetary grinding applications. The ZQCr28 high chromium cast iron balls achieve quenched surface hardness ≥58 HRC with non-quenched surface hardness ≥49 HRC, delivering ≥8000 drop impact fatigue life cycles. The nodular cast iron microstructure ensures uniform wear resistance throughout the grinding media volume. Available across a comprehensive size range from φ10 mm to φ130 mm in multiple grades including ZQCr20, ZQCr15, ZQCr12, ZQCr6, ZQCr2, and bainitic nodular ZQCr3, with dimensional tolerances from ±1.0 mm to ±3.0 mm depending on diameter specification. For other grades, dimensions, or custom specifications, please contact us via email. |
Technical Specifications
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| PARAMETER |
DETAILS |
| Product Type |
Cast Steel Grinding Balls (Research Grade) |
| Listing Specification |
ZQCr28 High Chromium Nodular, φ5 mm, Net Weight 1 kg |
| Quenched Surface Hardness |
≥58 HRC |
| Non-Quenched Surface Hardness |
≥49 HRC |
| Drop Impact Fatigue Life |
≥8000 Cycles |
| Microstructure |
Nodular Cast Iron |
| Available Diameter Range |
φ10 mm–φ130 mm |
| Diameter Tolerance (φ10–φ15 mm) |
±1.0 mm |
| Diameter Tolerance (φ20–φ25 mm) |
±2.0 mm |
| Diameter Tolerance (φ30–φ130 mm) |
±2.5 mm to ±3.0 mm |
| Custom Configurations |
Other grades (ZQCr20, ZQCr15, ZQCr12, ZQCr6, ZQCr2, ZQCr3), dimensions, and batch quantities are available upon request. Please contact us via email for custom orders. |
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Available Grade Specifications
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| PRODUCT TYPE |
GRADE |
QUENCHED HARDNESS |
NON-QUENCHED HARDNESS |
FATIGUE LIFE |
| High Chromium Cast Iron (Nodular) |
ZQCr20 |
≥58 |
≥49 |
≥8000 |
| High Chromium Cast Iron (Nodular) |
ZQCr28 |
≥58 |
≥49 |
≥8000 |
| High Chromium Cast Iron (Nodular) |
ZQCr15 |
≥58 |
≥49 |
≥8000 |
| High Chromium Cast Iron (Nodular) |
ZQCr12 |
≥48 |
≥48 |
≥8000 |
| Medium Chromium Cast Iron (Nodular) |
ZQCr6 |
≥48 |
≥45 |
≥8000 |
| Low Chromium Cast Iron (Nodular) |
ZQCr2 |
— |
— |
≥8000 |
| Bainitic Nodular Cast Iron |
ZQCr3 |
≥50 |
— |
≥8000 |
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Key Features & Advantages
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- ZQCr28 High Chromium Nodular Composition with ≥58 HRC Hardness: The high chromium content (28%) delivers superior wear resistance through hard carbide formation within a nodular iron matrix, achieving quenched surface hardness ≥58 HRC for extended grinding media service life.
- Exceptional Drop Impact Fatigue Resistance (≥8000 Cycles): All grades consistently exceed 8000 drop impact fatigue cycles, ensuring the grinding balls maintain structural integrity under repeated mechanical impact in high-energy planetary milling applications.
- Comprehensive Grade Portfolio for Research Flexibility: Seven available grades spanning high chromium (ZQCr28, ZQCr20, ZQCr15, ZQCr12), medium chromium (ZQCr6), low chromium (ZQCr2), and bainitic nodular (ZQCr3) options provide controllable composition selection for specific grinding compatibility requirements.
- Precision Dimensional Tolerances Across Full Size Range: Diameter specifications from φ10 mm to φ130 mm with tolerances from ±1.0 mm to ±3.0 mm meet the precise requirements of scientific research experiments for grinding media size distribution control.
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APPLICATION SCOPE: Laboratory ball mill grinding media for material science and powder engineering research. Planetary grinding equipment media for sample preparation and mechanical alloying. Suitable for grinding ores, minerals, ceramics, and other materials requiring controlled contamination and wear-resistant grinding media. Compatible with standard laboratory ball mill and planetary mill configurations.
PACKAGING: This listing is priced for ZQCr28 high chromium nodular cast iron grinding balls, 5 mm diameter, 1 kg net weight. Other grades (ZQCr20, ZQCr15, ZQCr12, ZQCr6, ZQCr2, ZQCr3), diameters (φ10–φ130 mm), and batch quantities are available upon email request. Each batch is securely packed to prevent damage during transit.
IMPORTANT NOTICE: The listed price is for ZQCr28 grade, 5 mm diameter, 1 kg net weight specification. For other grades, diameters, or batch quantities, please contact us via email at inquiry@atomfair.com for pricing and availability. Store grinding balls in a dry environment to prevent surface oxidation. For detailed material safety and handling information, consult the technical documentation prior to use.
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