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1. Low material density

2, good friction and wear performance

3. High strength and high modulus at high temperatures

4, ablation and erosion resistance 7, excellent dimensional stability

5, excellent thermal conductivity

6, low thermal expansion coefficient

7, excellent dimensional stability

8. Chemically inert

9, large fracture toughness

10, high thermal stability

11, excellent thermal shock resistance

12, excellent conductivity and controllability of resistance

13. High purity of materials

14, low life cycle cost