Density

g/cm3

Relative density

Elastic modulus

GPa

Compression strength ratio25

Hardness

GPa

3.26 0.02

>99.5

300320

4050

16 - 20

Fracture toughness

/MPam1/2

Bending strength

MPa

Poisson's ratio

Linear expansion coefficient

10-6K-1

Webuller modulus

6.09.0

9001000

0.25

3.13.3

1215

Thermal conductivity

WmK-1

Specific resistance ratio

Corrosion resistance

Size stability

Magnetic

15~20

1018

Excellent

Excellent

NO