Inconel718 Bearing Spring High Temperature Resistant Alloy For Aerospace
Product Details
| Material Composition: | Ni-52%, Cr-19%, Fe-18%, Nb-5% | Operating Temperature: | -270°C To 650°C |
|---|---|---|---|
| Peak Temperature: | 800°C | Tensile Strength: | 1400 MPa |
| Young's Modulus: | 180 GPa | Fatigue Life: | 10⁷ Cycles |
| Preload Force Variation: | ±5% | Load Multiplication: | 4-5x |
| Load Distribution Variance: | ±3% | Surface Coating Thickness: | 8-12μm |
| Salt Spray Resistance: | 1500+ Hours | Tolerance Class: | IT5 |
| Dimensional Tolerance: | ±0.02mm | Groove Depth Ratio: | 0.4 |
| Radial Stress Reduction: | 30% | Surface Hardness: | HV 500-550 |
| Maximum RPM: | 15,000 RPM | Maximum Load: | 800 KN |
| Stack Configuration: | 2-6 Discs | Vibration Frequency Range: | 10-2000Hz |
| Highlight |
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Product Description
- Grooved Series: For high-speed precision applications up to 15,000 RPM
- Grooveless Series: For heavy-load static applications up to 800 kN
- Precision: Annular geometry with tolerance class IT5 (±0.02mm on critical dimensions)
| Parameter | Performance Specification |
|---|---|
| Thermal Stability | Sustains continuous operation at 650°C (peak 800°C); retains 80% tensile strength at 500°C, 70% at 650°C |
| Fatigue Resistance | Exceeds 10⁷ cycles at 40% ultimate strength; maintains stable preload force (±5% variation) |
| Load Multiplication | 4-5x force output in parallel stacks (2-6 discs); uniform load distribution (±3% variance) |
- Turbine Engine Bearings: Grooved series with 6 equidistant radial grooves reduces radial stress by 30% during high-speed rotation
- Satellite Bearings: Grooveless design with shot-peened surfaces (HV 500-550) enhances resistance to micro-vibration-induced fatigue
Product Highlights
Inconel718 disc springs for aerospace bearing preload. High-temp resistant (650°C), exceptional fatigue life, and superior corrosion resistance. Custom grooved/grooveless designs for turbine engines and satellites.
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