REGISTER OVERVIEW PLASTICS

13/42 PLASTICS
PHYSICAL PROPERTIES OF SEMI-FINISHED
PRODUCTS MADE FROM ERTALON ® , NYLATRON ® ,
ERTACETAL ® , ERTALYTE ® AND PC – GUIDE VALUES
Key
+ Values for dry material
++ Values for material stored up to
saturation in normal atmospheric
conditions 23 °C/50 % RF (largely taken
from the relevant literature).
(1) According to method 1 of ISO 62 and
carried out on discs of ∅ 50 x 3 mm.
(2) The values listed for these properties
are largely taken from the material
sheets provided by the raw-material
suppliers and from other publications.
(3) Valid for just a few hours of
temperature stress for applications
where no or only low mechanical
stresses occur.
(4) Temperature load capacity over
5000/20.000 hours. After these time
intervals, the tensile strength has
dropped to around 50 % of the initial
value. The upper service temperature
limits listed here are therefore based
on the thermal oxidative degradation
that occurs, which causes the property
level to decrease. However, as with
all thermoplastics, in many cases
the maximum permissible service
temperature primarily depends
on the duration and degree of the
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mechanical stresses that arise during
the application of heat.
(5) Taking the way in which impact
strength drops as the temperature
decreases, in practice the lower service
temperature limit is determined in
particular by the level of the impact
loads acting on the material. The value
listed here is based on unfavourable
impact load conditions and, as a result,
should not be viewed as the absolute
practical limit.
(6) Please note that under no
circumstances may conclusions
regarding the behaviour of the
materials in an actual fire be drawn
from these estimated values taken
from the material sheets provided by
the raw-material suppliers. There is no
"yellow UL card".
(7) The data listed for dry material (+)
is largely average values taken from
tests carried out on test specimens
made from round rods ∅ 40 – 60 mm.
Taking the very low water absorption of
POM/PET/PC grades into account, the
values for the mechanical and electrical
properties of test specimens that are
dry (+) and at atmospheric humidity
(++) of these materials can be viewed
as almost identical.
(8) Test specimen: type 1 B.
(9) Test speed: 20 mm/min.
(10) Test speed: 1 mm/min.
(11) Test specimen: Cylinder ∅ 12 x 30 mm.
(12) Pendulum impact tester used: 15 J.
(13) Measured on test specimens
10 mm thick.
(14) Electrode configuration: two cylinders
∅ 25 / ∅ 75 mm; in transformer oil
according to IEC 60296; measured on
test specimens 1 mm thick.
(15) The values below do not apply to the
Ertalyte panels that are 2 to 6 mm thick.
� This table is intended to serve as a
helpful tool when selecting materials.
The data listed here is within the
normal range of product properties.
However, it does not represent
warranted property values and
should not be used for specification
purposes or as the sole basis for
designs.
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