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ACETAL COPOLYMER
[ERTACETAL®
C]
/ ACETAL HOMOPOLYMER
[ERTACETAL®
H] |
- High mechanical strength
- High hardness and stiffness
- High rigidity
- Excellent resilience
- High fatigue strength
- Good creep resistance
- Good impact strength even at lower
temperatures
- Good wear resistance, though mostly less
favourable than the nylons
- Low coefficient of friction
- Excellent Machineability
- High dimensional stability
- Low moisture absorption
- Good electrical insulating properties
- Physiologically inert (Nat.)
- Natural material suitable for food
contact
- Good chemical resistance
- Non self-extinguishing
- Poor weather resistance
- Poor resistance to high-energy radiation
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- Gear wheels with small modulus
- Heavily loaded bearings
- Guide and wear strips
- Snapfit assemblies
- Electrical components
- Pump housings
- Impellers
- Bearings
- Valves
- Valve seats
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Acetal manufactured by Quadrant EPP
is branded ERTACETAL. Acetal resins are crystalline
thermoplastic polymers with a melting point somewhat
lower than nylon. Valuable mechanical properties include
high strength and stiffness as well as good wear and
impact resistance. Acetal's low water absorption results
in excellent dimensional stability even in high moisture
environments.
ERTACETAL C Material data sheet
ERTACETAL C
Safety data sheet
Both homopolymer (DELRIN®) and copolymer grades are similar in
their overall balance of properties although each shows
some difference from the other in detail. In general,
the mechanical properties of the homopolymer (DELRIN®) are
slightly superior to the copolymer although the latter
has a higher continuous operating temperature. Alkali
resistance of the copolymer is superior to that of the
homopolymer (DELRIN®)and it is not effected by long term exposure
to water even, at temperatures of 60 to 90oC.
This can cause some reduction in properties of the
homopolymer (DELRIN®) material.
ERTACETAL H
Material data sheet
ERTACETAL H
Safety data sheet |
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- Better chemical resistance
- Continuous operating temperature 100oC
- Melt point 165oC
- Density 1.43 (g/cm3)
- More resistant against hydrolysis
- More resistant to strong alkalis
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AVAILABILITY
Acetal copolymer natural
Æ
3mm to 250mm
Rod Precision ground on request
Tube extruded 20mm O/D x 10mm I/D to
350mm O/D x 300mm I/D
sheet 1mm to 6mm
Plate extruded 8mm to 100mm
Acetal copolymer black
- Rod extruded
Æ 5mm to
250mm
- Rod Precision ground on request
- Tube extruded 25mm O/D x 12mm I/D to
100mm O/D x 50mm I/D
- sheet 2mm to 6mm
-
Plate extruded 8mm to 100mm
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Acetal
Homopolymer
(DELRIN®)
has |
- Slightly superior physical properties
- Continuous operating temperature 90oC
- Melt point 175oC
- Density 1.43 (g/cm3)
- Slightly superior mechanical strength,
stiffness & hardness
- Better Wear resistance
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AVAILABILITY
Acetal homopolymer (DELRIN®) natural
- Rod extruded
Æ
5mm to 200mm
- Rod Precision ground on request
- Plate extruded 8mm to 50mm
Acetal homopolymer (DELRIN®) black
- Rod extruded
Æ
16mm to 80mm
Rod Precision ground on request
Plate extruded 10mm to 50mm
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Warning
A
typical characteristic of semi-finished acetal
material particularly Acetal Homopolymer is the micro porosity of the centre.
Because of this phenomenon parts made from
Acetal may not be liquid or gas proof. For
intricate gas and liquid proof components we
would recommend ERTALYTE®
[PET]. as a suitable alternative material. |
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ERTACETAL® is a registered
trademark of Quadrant Engineering Plastic Products. DELRIN® is
a registered trademark of Du Pont
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The information given here is
believed to be correct, but
completeness and accuracy are
not guaranteed. The user shall
be fully responsible for
determining the suitability of
products for the intended use.
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