Sintered High Chrome Si3N4 Silicon Nitride Balls Precision Mechanical
Price:
Negotiable
MOQ:
1kg
Delivery Time:
within 15days
Brand:
Zhongli
Product Description
Sintered High Chrome Si3N4 Silicon Nitride Balls Precision Mechanical
High-purity Si3N4 precision balls sintered for maximum density represent a revolutionary advancement in industrial materials. These ceramic balls are engineered to meet rigorous demands across aerospace, automotive, semiconductor, and renewable energy applications, offering superior durability, efficiency, and reliability.
Key Features of Si3N4 Precision Balls
- High Heat Resistance: Withstands temperatures up to 1800°F (982°C)
- Low Friction: Smooth surface enhances bearing efficiency and extends service life
- Chemical Resistance: Excellent corrosion resistance in harsh environments
- Lightweight: 60% lighter than steel, reducing centrifugal force
- Non-Magnetic: Ideal for applications in magnetic fields and electric motors
Applications
Aerospace and Defense
Used in aircraft engines and critical components for high-temperature performance and corrosion resistance.
Automotive Industry
Enhances hybrid and electric vehicle performance through reduced friction and weight.
Semiconductor Manufacturing
Provides increased bearing life in high-speed, low-lubrication equipment.
Renewable Energy
Used in wind turbine generators for durability and low maintenance requirements.
Material Comparison
| Property | Silicon Nitride (Si3N4) | Steel (440C) | Zirconia (ZrO2) | Alumina (Al2O3) |
|---|---|---|---|---|
| Density (g/cm³) | 3.2 | 7.8 | 6.0 | 3.9 |
| Hardness (HV) | 1,400-1,600 | 700-900 | 1,200-1,300 | 1,500-1,800 |
| Fracture Toughness (MPa*m½) | 6-7 | 15-20 | 7-10 | 3-4 |
| Compressive Strength (GPa) | 2.5-3.5 | 2.0-2.5 | 2.0-2.3 | 2.0-3.0 |
Physical Properties
| Chemical Composition: | Si3N4≥95% |
| Bulk Density: | 3.2±0.05g/cm3 |
| Elastic Modulus: | 350GPa |
| Hardness Vickers: | 1870HV |
| Bending Strength: | 780MPa |
| Fracture Toughness: | 7.2MPa*m1/2 |
| Thermal Expansion Coefficient: | 3.2 10-6/K |
| Thermal Conductivity: | 25W/(m*K) |
Ball Sizes & Grades
| Size (mm) | Φ0.8-180 |
|---|---|
| Grade | Vdws | SPH | Vdwl | Ra |
| G3 | 0.05-0.08 | ≤0.08 | <0.13 | 0.01 |
| G5 | 0.08-0.13 | ≤0.13 | <0.25 | 0.014 |
| G10 | 0.15-0.25 | ≤0.25 | <0.5 | 0.02 |
| G16 | 0.2-0.4 | ≤0.4 | <0.8 | <0.025 |
| G20 | 0.3-0.5 | ≤0.5 | <1 | <0.032 |
| G100 | 0.4-0.7 | 0.4-0.7 | <1.4 | <0.0105 |
Manufacturing & Quality
Global Distribution
Shipment to South Korea
Shipment to Spain
Frequently Asked Questions
What sizes and tolerances are available?
- Diameter range: 0.5mm to 50mm (custom sizes possible)
- Sphericity: As low as 0.1 µm (Grade 5 for ultra-precision bearings)
- Surface finish: Ra < 0.02µm (mirror polish for low friction)
Are silicon nitride balls FDA-approved for medical use?
Yes! Si3N4 is biocompatible (ISO 6474-1) and used in spinal implants, dental devices, and joint replacements due to its antibacterial properties.
How do I choose the right Si3N4 balls for my application?
Consider:
- Load & speed requirements (dynamic/static stress)
- Temperature range (Si3N4 excels in high heat)
- Chemical exposure (resistant to most acids/alkalis)
- Electrical insulation needs (non-conductive)
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Guangzhou Zoli Technology Co.,Ltd.
Location
Room 702A, No. 585, Airport Road, Tangjing Street, Baiyun District, Guangzhou City, Self-compiled 2341
Contact Person
Ain Qiu