Tuffak Polycarbonate Technical Data

Technical Specification
PROPERTIES
TEST METHOD
UNIT
TYPICAL VALUES
TUFFAK A
TUFFAK XL
Physical
Density DIN 53479
g/cm³
1.20
1.20
Water Absorption ASTM D 570
%
0.10
0.15
Poisson's ratio ASTM D 638
-
0.38
0.38
Optical  
Light transmission (3mm) ASTM D 1003
%
89
88
Mechanical  
Tensile strength at yield DIN 53455
Mpa
60
60
Tensile strength at break DIN 53455
Mpa
70
70
Elongation at break DIN 53455
%
100
80
Tensile modulus DIN 53457
Mpa
2300
2300
Flexural modulus DIN 53457
Mpa
2500
2500

Charpy impact strength (notched, 23°C)

 DIN 53453
KJ/m²
35
30
Izod impact strength (notched, 23°C) ASTM D 256
J/m
850
700
Rockwell hardness (M scale) ASTM D 785
-
70
70
Thermal  
Vicat softening temp, 50 N DIN 53460
°C
153
148
HDT, 1.82 MPa DIN 53461
°C
138
134
Coeff. of linear thermal expansion VDE 0304/1
m/m°C
7 x 10-5
7 x 10-5
Thermal conductivity ASTM C 177
W/m°C
0.20
0.20
Max. continuous service temperature -
°C
100
100
 
Light Transmission
Through its excellent UV protection Tuftak XL will maintain these values over an extended period of time even when exposed to direct sunlight.

Accelerated Xenon tests run on Tuftak XL for 5000 hours (corresponding to more than 10 years of outdoor exposure) show a very small changing of light transmission and yellowness index, (Tuffak XL weathering characteristic graphs)
Fire Performance and Classification
PROPERTY NORM
FIRE CLASSIFICATION
TUFFAK A
TUFFAK XL
Rating UL 94
V-2 -V-0
HB V-2