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Semitron ® ESd 225 POM Acetal

Compliance Info

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General Info

Semitron® ESd 225 is a static dissipative acetal. This material has the same general properties as unfilled acetal, but with static dissipative properties throughout -- resistivity in the range of 10^9 to 10^10 ohm/sqauare. It may be used to temperatures of 225°F (107°C) without degradation. Semitron® ESd 225 offers broad chemical resistance and good wear resistance.

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Key Properties

Surface resistivity 10^9 – 10^10 Ohm/Square (Static Dissipative Range)
Thermal performance to 225°F (107°C) Heat Deflection Temperature
Good Wear Resistance
Semitron® ESd products are inherently dissipative. They do not rely on atmospheric phenomena (humidity) to activate, nor are surface treatments used to achieve dissipation. Static electricity is dissipated through these products as readily as it is dissipated along the surface.

Limitations

Low Stiffness
Moisture Absorption

Applications

Hard Disk Drive Fixtures
High Speed Electronic Printing Components
Jigs & Fixtures for Static Control in Many Industries
Material Handling Components Requiring Static Control
Wafer Processing Components

Resin Trade Names

Manufacturer Trade Names

Semitron® ESd 225

Boedeker Plastics, Inc. stocks & supplies plastic sheet, rod, tube, film and custom profiles and machine parts from these shapes that are produced from plastic resin. In many cases the manufacturer of the shape has their own product trade name. If your specification calls for a specific resin grade or manufacturer trade name, we can supply a shape made from that resin to meet your specification or suggest an equal. If you require a specific resin or brand it must be specified at the time of order.

Available Sizes

Available Colors

Off White

Safety Data Sheet

Download Safety Data Sheet

Typical Properties of Semitron ® ESd 225 POM Acetal

DETAIL
Description			Value
Material Type			Semi-Crystalline Thermoplastic
Chemical Name			POM Polyoxymethylene Acetal Copolymer
Trade Name			Semitron® ESd 225
Additives			Proprietary ESD Additives
Color			Off White
Manufacturer			Quadrant
PHYSICAL
Property	Test	Unit of Measure	Value
Density	ASTM D792	g/cm³	1.33
	ASTM D792	lb/in³	0.048
Water Absorption, 24 hrs, Immersion	ASTM D570	% by wt.	2
Water Absorption, Saturation, Immersion	ASTM D570	% by wt.	8
MECHANICAL
Property	Test	Unit of Measure	Value
Tensile Strength	ASTM D638	psi	5,400
Tensile Modulus	ASTM D638	psi	200,000
Tensile Elongation at Break	ASTM D638	%	15
Flexural Strength	ASTM D790	psi	7,300
Flexural Modulus	ASTM D790	psi	220,000
Compressive Strength	ASTM D695	psi	8,000
Compressive Modulus	ASTM D695	psi	175,000
Hardness	ASTM D785	NA	Rockwell M50 (R108)
IZOD Impact-Notched	ASTM D256	ft-lb/in	1.5
Dynamic Coefficient of Friction	QTM 55007 (Dry vs Steel)	NA	0.29
Wear K Factor	QTM 55010	in³-min/ft-lbs-hr	30
Limiting PV	QTM 55007	psi-fpm	2,000
THERMAL
Property	Test	Unit of Measure	Value
Coefficient of Linear Thermal Expansion	ASTM D696	x 10-5 in./in./°F	9.3
Heat Deflection Temp	ASTM D648	°C at 264 psi	107
	ASTM D648	°F at 264 psi	225
Melting Point Temp	ASTM D3418	°C	160
	ASTM D3418	°F	320
Max Continuous Operating Temp		°C	82
		°F	180
Minimum Operating Temp		°C	-50
		°F	-58
Flammability Rating	UL94	NA	HB
ELECTRICAL
Property	Test	Unit of Measure	Value
Dielectric Constant at 1 MHz	ASTM D150	NA	4.31
Dissipation Factor at 1 MHz	ASTM D150	NA	0.036
Surface Resistivity	ANSI/ESD STM 11.11	ohm/square	10^9 – 10^10
COMPLIANCE
Description			Value
FDA			No
USDA			No
NSF			No
3-A Dairy			No
Canadian Food Inspection Agency			No
USP Class VI			No
OTHER
Description			Value
UV Resistant			No
Relative Cost			$$$
Machinability			1

Relative cost based on a scale of one dollar sign ($) as the lowest to ten dollar signs ($$$$$$$$$$) as the highest. Machinability based on a scale of 1 to 10, with 1 being the easiest and 10 being the most difficult to machine. NOTE: All information contained on www.boedeker.com, downloadable documents and printed literature is intended for technical reference only and considered to be accurate for reference purposes only. Boedeker Plastics, Inc. makes no guarantee and offers no warranty for fitness in use and strongly recommends the user validate any plastic, machined part, or product in a specific application for fitness in use.

Semitron® is a registered trademark of Quadrant Engineering Plastic Products.