Appearance

Compact

Color

Ivory

Content

99.7%

Density

g／m^３

3.2

Water Absorption

％

０

Vickers Hardness

Gpa

11.2

Flexural Strength

Mpa

220

Compressive Strength

Mpa

---

Young's Modulus

Gpa

310

Poisson's Ratio

－

0.24

Fracture Toughness

Mpa.m^1/2

---

Coefficient Of Thermal   Expansion

40-400°C

x 10^-6/k

4.6

40-800°C

x 10⁶/k

5.2

Thermal Conductivity　 20°C

W(m.k)

67

Specific Heat Capacity

J(g.k)

0.72

Thermal Shock Resistance   (in water)

°C

---

Dielectric strength

kv/mm

16

Volume resistivity

20°C

Ω.cm

>10¹⁴

300°C

Ω.cm

10¹¹

500°C

Ω.cm

10⁸

Dielectric constant 　1MHz

－

8.5

Dielectric loss angle 　1MHz

x 10^-4

2

Loss factor

x 10^-4

17

Nitric Acid（60%）90°C, 24 Hours

Weightlessness

mg/cm²

    ---

Sulphuric Acid（９５%）9５°C, 24 Hours

Weightlessness

mg/cm²

---

Caustic Soda（３０%）８０°C, 24 Hours

Weightlessness

mg/cm²

---