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Vivak Technical Data

 
Typical values
Units
Test method
Physical
Density
1.27
g/cm³
DIN 53479
Moisture absorption:
- 23°C, 24h immersion (3 mm)
0.2
%
Index of refraction n D at 20°C
1.57
DIN 53491
Light transmittance (2 mm sheet)
88
%
DIN 5036
Mechanical
Tensile stress at yield
50
N/mm²
DIN 53455 (1)
Elongation at yield
5
%
DIN 53455 (1)
Tensile strength
26
N/mm²
DIN 53455 (1)
Elongation at break
>100
%
DIN 53455 (1)
Tensile modulus of elasticity
2050
N/mm²
DIN 53457 (2)
Limiting flexural stress
77-83
N/mm²
DIN 53452

Impact strength:

- Charpy unnotched
no break
J/m²
DIN 53453
- Charpy notched
16
J/m²
DIN 53453
- Izod notched (4 mm)
90
J/m
ASTM D256
Instrumented impact (4 mm) at F max
28
J
ASTM D3763
Rockwell hardness
R104-R117
rating
ASTM D785
Thermal
Glass transition temperature
81
°C
Thermal conductivity (l)
0.32
W/m°C
DIN 52612
Coeff. of linear thermal expansion
0.050
mm/m°C
Heat deflection temperature under load acc. to SO/R75
DIN 53461
- method A: 1.81 N/mm 2
63
°C
- method B: 0.45 N/mm 2
70
°C
Max. service temperature in air (3)
65
°C
Min. service temperature
-40
°C
Electrical
Dielectric strength (4)
20
Kv/mm
IEC 243-1
Volume resistivity
1015
Ohm.cm
DIN 53482
Surface resistivity
1016
Ohm
DIN 53482
Dielectric constant at 10³ Hz
2.6
-
DIN 53483
Dielectric constant at 106 Hz
2.4
-
DIN 53483
Dissipation factor at 10³ Hz
0.005
-
DIN 53483
Dissipation factor at 106 Hz
0.020
-
DIN 53483
Flame  
Oxygen index
26
%
ASTM D2863
Flammability (3 mm sheet)
V-2 (6)
rating
UL 94
Glow wire test (2 & 3 mm)
850
°C
IEC695-2-1
Germany
- 0.5 to 8 mm sheet
B1
rating
DIN 4102/part1
- 4 mm sheet
S4/SR2/ST1
rating
DIN 5510 DIN

- 5 & 6 mm sheet

S4/SR2/ST2
rating
5510