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Ensinger PEI

Haysite H258 Polyester Laminate  (discontinued **)
Categories: Polymer; Thermoset; Composite SMC; Polyester, TS; Thermoset Polyester Glass SMC

Material Notes: Solder Pallet and Work Holder Sheet A high temperature polyester laminate that exhibits excellent retention of mechanical properties and dimensional stability at elevated temperatures. Applications include wave solder pallets where static dissipative properties are not required. Standard color is grey. Available thicknesses from 1/8" to 1/2" and 4mm to 12mm. Sheet sizes are 36" X 72" and 48" X 60", special thicknesses and custom sheet sizes are available.

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Physical PropertiesMetricEnglishComments
Density 1.98 g/cc0.0715 lb/in³ASTM D572
Water Absorption 0.16 %0.16 %ASTM D570
 
Mechanical PropertiesMetricEnglishComments
Hardness, Barcol 5252
Tensile Strength, Ultimate 110 MPa16000 psi
Flexural Strength 172 MPa24900 psi
Flexural Modulus 12.0 GPa1740 ksi
Compressive Strength 234 MPa33900 psi
Shear Strength 103 MPa14900 psiASTM D732
Izod Impact, Notched 5.40 J/cm10.1 ft-lb/inASTM D256
 
Electrical PropertiesMetricEnglishComments
Dielectric Constant 4.2
@Frequency 60 Hz
4.2
@Frequency 60 Hz
ASTM D150
Dielectric Strength 16.0 kV/mm
@Thickness 3.20 mm
406 kV/in
@Thickness 0.126 in
Perpendicular, Short Time in Oil and Air; ASTM D149
Dissipation Factor 0.010
@Frequency 60 Hz
0.010
@Frequency 60 Hz
ASTM D150
Arc Resistance 150 sec150 secASTM D495
 
Thermal PropertiesMetricEnglishComments
Thermal Conductivity 0.290 W/m-K2.01 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air >= 300 °C>= 572 °FService Operating temperature.

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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PHAY24 / 45630

Proto3000 – 3D Engineering Solutions

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