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Mitsubishi Chemical Advanced Materials Semitron™ ESd 300 PET Polyethylene Terephthalate Polyester
Categories: Polymer; Thermoplastic; Polyester, TP; Polyethylene Terephthalate (PET); PET-P Polyester, Extruded
Material Notes: Semitron™ ESD 300 PET shapes are characterized by their excellent thermal performance, superior chemical resistance, consistent electrical properties, outstanding dimensional stability and abrasion resistance, minimal moisture absorption, and their low coefficient of linear thermal expansion.

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.39 g/cc1.39 g/ccASTM D792
Water Absorption at Saturation 0.120 %0.120 %ASTM D570 (17)
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 101101ASTM D785
Tensile Strength 87.0 MPa12600 psiISO 527-1/-2 (7)
Flexural Strength 108 MPa15700 psiISO 178 (12)
Compressive Yield Strength  34.0 MPa
@Strain 1.00 %		4930 psi
@Strain 1.00 %		ISO 604 (10)
 67.0 MPa
@Strain 2.00 %		9720 psi
@Strain 2.00 %		ISO 604 (10)
 113 MPa
@Strain 5.00 %		16400 psi
@Strain 5.00 %		ISO 604 (10)
Charpy Impact, Notched 0.120 J/cm²0.571 ft-lb/in²ISO 179-1/1eA
 
Electrical PropertiesMetricEnglishComments
Surface Resistivity per Square 1.00e+6 - 1.00e+9 ohm1.00e+6 - 1.00e+9 ohmANSI/ESD STM 11.11
 
Thermal PropertiesMetricEnglishComments
CTE, linear 55.8 µm/m-°C31.0 µin/in-°FASTM E-831 (TMA)
 65.0 µm/m-°C
@Temperature 23.0 - 60.0 °C		36.1 µin/in-°F
@Temperature 73.4 - 140 °F
 85.0 µm/m-°C
@Temperature 23.0 - 100 °C		47.2 µin/in-°F
@Temperature 73.4 - 212 °F
Melting Point 255 °C491 °FASTM D3418
Maximum Service Temperature, Air 98.9 °C210 °FContinuous Use Temperature in Air after 20000 hr
Deflection Temperature at 1.8 MPa (264 psi) 116 °C240 °FASTM D648
 
Chemical Resistance PropertiesMetricEnglishComments
Acids, Strong (pH 1-3) AcceptableAcceptable
Acids, Weak AcceptableAcceptable
Alcohols AcceptableAcceptable
Alkalies, Strong (pH 11-14) AcceptableAcceptable
Alkalies, Weak AcceptableAcceptable
Chlorinated Solvents UnacceptableUnacceptable
Continuous Sunlight LimitedLimited
Hot Water / Steam LimitedLimited
Hydrocarbons - Aliphatic UnacceptableUnacceptable
Hydrocarbons - Aromatic UnacceptableUnacceptable
Inorganic Salt Solutions AcceptableAcceptable
Ketones, Esters UnacceptableUnacceptable
 
Descriptive Properties
ESd categoryDissipative

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P1SM906 / 291063