High Precision Tungsten Steel Valve Core & Sleeve Set with 0.003-0.005mm Clearance Fit and HRA 86-93 Hardness
Professional-grade tungsten steel valve core and sleeve sets engineered for pneumatic and hydraulic equipment applications requiring sliding clearance operations.
Tungsten steel, manufactured through advanced powder metallurgy processes, delivers exceptional performance characteristics:
- High strength and hardness (HRA 86-93)
- Superior wear and corrosion resistance
- High-temperature stability
- Minimal linear expansion coefficient
- Excellent physical stability for extended service life
Custom-manufactured according to design specifications from Huazhong University of Science and Technology:
Φ18-8×13.873×13.873-2×Φ12-19×Φ6-18×M3×27
Φ20×Φ18×1.2-1.2-8-45°×0.5-20°×8
- Φ18 valve core outer diameter: -0.001,-0.002 tolerance
- Roundness requirement: 0.001
- Clearance fit: 0.003-0.005 between core and sleeve
- Symmetry requirement: 0.008
- Coaxiality: 0.008
| Property | Range |
|---|---|
| Grain Size (μm) | 0.4-2.0 |
| Cobalt Content (% Co) | 6-20 |
| Density (g/cm³) | 13.96-14.85 |
| Hardness (HRA) | 86-93 |
| Flexural Strength (MPa) | 3200-4500 |
| Young's Modulus (GPa) | 570-620 |
Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd. specializes in tungsten carbide R&D, processing, and OEM services. Established in 2003, we hold ISO 9001:2015 certification and high-tech enterprise status with over 20 patents.
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