Keywords: Granite mechanical components, material properties, precision engineering, dimensional stability
Granite mechanical components are prized in industries requiring high precision and durability due to their unique material properties:
- Mechanical Strength: With a compressive strength of 245-254 MPa and elastic modulus of 1.27-1.47 N/mm2, granite withstands heavy loads without deformation.
- Thermal Stability: A low thermal expansion coefficient (4.6×10⁻⁶/°C) minimizes dimensional changes in temperature-controlled environments.
- Surface Finish: Achievable flatness deviations of ±3μm over large areas (e.g., 1000×1000mm) meet ISO 10360-2 standards for metrological instruments.
- Chemical Resistance: Inertness to acids, alkalis, and organic solvents ensures long-term integrity in harsh chemical environments.
Compared to cast iron, granite offers 30% greater rigidity and 50% lower thermal distortion, critical for applications like CNC machine bases. Advanced composites, such as granite-reinforced polymers, now combine flexibility with granite’s stability for dynamic loading conditions.
