World WideThe following information pertains to E-PAC®  material

The information in this table is a summary of each manufacturer's UL certifications. For more comprehensive and up to date information please click on the manufacturer's name to see official UL certifications or visit U.L.  at http://www.ul.com 

This is a "guide" only.  Availability and specifications do change... make sure to follow the links below to confirm you have up to date data.  Also doube check with U.L.

If you're not an extreme technoid, proceed with caution...

Material	Raw Material	UL Grade	File Owner	Min/Max Thk (mm)	Density Range	Color	Availabilaity
Arpro FR	5225 M	HF-2	JSPI	6.0	30 - 75	Black	World Wide
Arpro	All Grades	HBF	JSPI	12.6	60 - 140	Black	World Wide
LB	All Grades	HBF	KANEKA	8.0-  12.8	55 - 70	Black	World Wide
PP-HF-1	Epran PP-2	HF-1	KANEKA	3.3 - 13.7	50 - 100	Black	World Wide
PP2-HF-1	Epran PP-2	HF-1	KANEKA	4.0	44	Black	World Wide
PP2-HF-2	Epran PP-2	HF-2	KANEKA	4.0	44 - 77	Black	World Wide

For all listings the min. wall thickness is important. There is no limit above 12.8  (refer to UL-94).
Please use this table only for your overview. Listings are subject to change and must be confirmed prior to developing a product.

 Thermal properties

After the molding process, the parts are tempered so that the dimensions
become constant. Any further temperature influences will not result in
contraction, expansion or change of mechanical properties.

Extracted from an EPP Manufacturers Data Sheet
Thermal endurance
- Mechanical changes in properties - above	110ºC
- Mechanical changes in properties - below	-40ºC
- Change in state - from	140ºC
- Thermal dissolution	200ºC
- Ignition point	315ºC
Thermal expansion factor
- From -40ºC to 20ºC	4.2*10?? l/ºC
- From 20ºC - 80ºC	7.5*10?? l/ºC
i.e. expansion of 1? =100 mm at ?T = 50K	~0.375 mm
Temperature test 240h / 80ºC + 24h / 20ºC
Changes in stress at 25% deformation
- Before	350 kPa
- After	375 kPa
Temperature loop test
4h / 90ºC + 0.5h / 23ºC + 1.5h / -40ºC
+ 0.5h / 23ºC + 3h /70ºC / 95% humidity
+ 0.5h / 23ºC + 1.5h / -40ºC + 0.5h / 23ºC
-Permanent deformation	none

Decomposition products

If EPP is not completely incinerated, combustible gases such as Ethylene, Ethane, carbon monoxide and Propane may be released.

Epac material is resistant to a wide array of harsh chemicals. The following table lists some of the most common. If you have questions regarding resistance to any agents please contact us.

Chemical	Effect
Machine oil	Stable
Gasoline	Swelling
Kerosene	Swelling
Engine oil	Stable
30% sulfuric acid	Stable
10% nitric acid	Stable
10% hydrochloric acid	Stable
10% sodium hydride	Stable
10% ammonia water	Stable
Toluene	Swelling
Acetone	Swelling
Ethyl alcohol	Stable
N-heptane	Swelling
Carbon tetrachloride	Swelling
Trichloroethylene	Swelling
Ethyl acetate	Stable
Methylethyl ketone	Swelling
Tetrahydrofuran	Swelling
Formaldehyde	Stable
Benzene	Swelling

Electrical properties

EPP has good electrical insulating properties, which ensure that the
foam bocks can easily be electrically charged. Consequently, methods are
being developed to produce anti-static EPP. There is no noticeable
interference between EPP-material and high frequency circuits with
square-wave signals of up to 100 MHz. Tests at very high frequencies of
>>100 MHz have not yet been conducted.

BASF is currently developing anti-static/conductive EPP. Premier is
trailing this material. Contact us for more detail.

Extracted from an EPP Manufacturers Data Sheet
Dissipation factor tanõ of 1 MHz (PP - injection molding)	<50,000
Breakdown voltage (PP injection molding)	500 kV /cm
Surface resistance at 23ºC / 49% re. Humidity - untreated	10¹¹ up to 10¹² OHM

Environmental resistance

In general, EPP is fairly resistant to weathering (light, oxygen, ozone,
and humidity).

Reactions to light

EPP has a good resistance to radiation within wavelengths of visible light. Solar radiation or other sources of light with high concentrations of UV rays embrittle the material and damage the molding surface area. High temperatures can accelerate this oxidization process even more. Resistance to weathering can be improved by applying black carbon dye.

Reactions to humidity, water

Humidity has no effect on the mechanical properties of EPP. No visible
changes were noted after the following temperature-humidity tests were
performed:

1) 48h at 50ºC resulting in 98% humidity 2) 24h at 23ºC resulting
in 50% humidity
2) During temperature fluctuations, condensation appeared only on
the metal cover, not on EPP itself.

Direct effects of water

Water and EPP do not produce a reaction, but mechanical properties can
be affected by it.

Extracted from an EPP Manufacturers Data Sheet
Water Absorption
-After 1 day	0.1 - 0.3 Vol. %
-After 7 days	0.6% Vol. %
Changes in mechanical properties
After 1 year / 20ºC water -
- A reduction in solidity of	20%
- A reduction in expansion of	42%
After 24h in 40ºC water -	- Visible changes none

The absorption of strong mechanical vibrations such as sound is good.
Resonance frequencies were fairly low at approximately 500 Hz. This
means that components that are destroyed in vibrations of a higher
frequency, are in this case, not in any danger due to the fact that
these frequencies are absorbed by EPP