| Parameters | Unit | Technical Requirements |
|---|---|---|
| Density | g/cm³ | 1.9 ~ 2.1 |
| Standard Value of Tensile Strength of Elastic Modulus | GPa; MPa | > 45 > 750 |
| Elongation at Break | % | > 1.6 |
| Coefficient of Longitudinal Thermal Expansion | x 10-6/°C | 1.66 |
| Alkali Resistance & Tensile Strength Retention Rate | % | ~12 > 75 |