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Unity Value
Coefficient of mean linear thermal expansion
α
20/300

  3,25

10-6K-1

Tranformation temperature

530

C

Glass temperature at viscosity

10 13.0 dPas (annealing point)

10 7.6 dPas (softening point)

10 4 dPas (working point)

 

560

815

1270

 

C

C

C

Maximum short-time working temperature

500

  C

Density

2,23

g/cm3

Modulus of elasticity E ( Young’s modulus)

63

103N/mm

Poisson’s ratio µ

0,20

1

Thermal conductivity λ (at 90 °C)

1,16

W/m . K

Temperature for the specific electrical resistance 10 8 Ω . cm t k 100

 

248

 

C

Logarithm of the electric volume resistivity

at 250 C

at 350 C

 

7,9

6,5

 

Ω . cm

Ω . cm

Dielectric properties (1 MHz, 25C )

Dielectric constant (permittivity)

 

4,7

 

1

Dielectric loss factor (dissipation factor) tan δ

55

10-4

Refractive index (λ = 587,6nm) nd

1,473

1

Stress-optical coefficient

4,0

10-6 mm/N

 

Business contact

VIO

ZI Des Richardets
13, rue du ballon
93165 Noisy-Le-Grand Cedex France

TEL : + 33 (0)1 43 03 78 81
FAX : + 33 (0)1 43 05 64 55

E-mail: V.I.O@wanadoo.fr



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