Mitsubishi Chemical Advanced Materials Semitron™ ESd 225 POM Extruded, Static Dissipative Acetal

Categories:

Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, Unreinforced

Material Notes:

A line of POM shapes characterized by excellent wear resistance, thermal performance, and quick dissipation of static charges. Due to these properties, this grade is ideal for several applications throughout the semiconductor and electronics industry.

Key Words:

POM, Polyoxymethylene; Polyformaldehyde; Polyacetal

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Physical Properties	Metric	English	Comments

Specific Gravity	1.33 g/cc	1.33 g/cc	ASTM D792
Water Absorption at Saturation	8.00 %	8.00 %	ASTM D570 (17)

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell R	106	106	ASTM D785
Hardness, Shore D	75.0	75.0	ISO 868
Tensile Strength	38.0 MPa	5510 psi	ISO 527-1/-2 (7)
Flexural Strength	50.0 MPa	7250 psi	ISO 178 (12)
Compressive Yield Strength	14.0 MPa @Strain 1.00 %	2030 psi @Strain 1.00 %	ISO 604 (10)
	25.0 MPa @Strain 2.00 %	3630 psi @Strain 2.00 %	ISO 604 (10)
	38.0 MPa @Strain 5.00 %	5510 psi @Strain 5.00 %	ISO 604 (10)
Shear Strength	41.0 MPa	5950 psi	ASTM D732
Charpy Impact, Notched	0.800 J/cm²	3.81 ft-lb/in²	ISO 179-1/1eA

Electrical Properties	Metric	English	Comments
Surface Resistivity per Square	1.00e+10 - 1.00e+12 ohm	1.00e+10 - 1.00e+12 ohm	ANSI/ESD STM 11.11
Dielectric Constant	4.31 @Frequency 1.00e+6 Hz	4.31 @Frequency 1.00e+6 Hz	ASTM D150
Dissipation Factor	0.0360 @Frequency 1.00e+6 Hz	0.0360 @Frequency 1.00e+6 Hz	ASTM D150

Thermal Properties	Metric	English	Comments
CTE, linear	167 µm/m-°C	93.0 µin/in-°F	ASTM E-831 (TMA)
	150 µm/m-°C @Temperature 23.0 - 100 °C	83.3 µin/in-°F @Temperature 73.4 - 212 °F
Melting Point	160 °C	320 °F	ASTM D3418
Maximum Service Temperature, Air	87.8 °C	190 °F	Continuous Use Temperature in Air after 20000 hr
Deflection Temperature at 1.8 MPa (264 psi)	107 °C	225 °F	ASTM D648
Minimum Service Temperature, Air	-50.0 °C	-58.0 °F

Chemical Resistance Properties	Metric	English	Comments
Acids, Strong (pH 1-3)	Limited	Limited
Acids, Weak	Limited	Limited
Alcohols	Acceptable	Acceptable
Alkalies, Strong (pH 11-14)	Acceptable	Acceptable
Alkalies, Weak	Acceptable	Acceptable
Chlorinated Solvents	Acceptable	Acceptable
Continuous Sunlight	Acceptable	Acceptable
Hot Water / Steam	Limited	Limited
Hydrocarbons - Aliphatic	Acceptable	Acceptable
Hydrocarbons - Aromatic	Unacceptable	Unacceptable
Inorganic Salt Solutions	Acceptable	Acceptable
Ketones, Esters	Limited	Limited

Miscellaneous Properties	Metric	English	Comments
Data Sheet Region	Americas	Americas
Targeted Usage	Structural Uses	Structural Uses

Descriptive Properties
ESd category	Dissipative

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P1SM30 / 20119

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