Densityρ:

2.23±0.02g/cm3

Hardness:

>7

Tensile strength:

4.8×107Pa(N/M2)

Bulk modulus:

93×103Mpa

Modulus of rigidity:

3.1×1010Pa

Young's modulus:

63KN/mm3

Compressive strength:

1200kg/cm2

Poisson's ratio:

0.18

Thermal expansion coefficient:

(0-300℃)(3.3±0.1)x10-6K-1

Coefficient of thermal conductivity:

1.2W×(m×k) -1

Specific heat capacity:

(20-100℃)00.82kJx(kgxk)

Optical performance:

1.Light transmittance:

92%

2.The refractive index:

Nd:1.47384

3.The wavelength:

435.8nm=1.481, 479.9nm=1.4772 , 546.1nm=1.4732

Softening point:

810±10 ℃

The resistivity1gρ

250℃8.0Ω×cm

Dielectric coefficientε

4.7

Dielectric strength

5×107V/M

Dielectric loss factor

tanσ(MC20℃)≤38×10-4

Resistance to cold and hot shock

280℃

Continuous working temperature

≤550℃

Water resistance:

ISO719 HGB Level 1

Acid resistance

ISO195 HGB Level 1

Alkali resistance

ISO695 HGB Level 2