Technical datasheet

EPOXIDUR® EP 3581 T-1

Supplied byRaschig- Last Updated on Aug 27, 2025

EPOXIDUR® EP 3581 T-1 by Raschig is an epoxy resin reinforced with inorganic filler and glass fiber. Exhibits good mechanical strength, excellent electrical isolation properties and dimensional stability at high temperature. Offers very good sealing on metal surfaces. Suitable for processing by injection and compression molding. EPOXIDUR® EP 3581 T-1 is used for sensor encapsulation in automotive industry. Conforms to requirements of the EU directives 2002/95 (RoHS), 2002/96 (WEEE), 2006/122 (PFOS) and UL-94 (HB) flame rating. It has a shelf life of 6 months.
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EPOXIDUR® EP 3581 T-1 properties

Electrical properties

PropertiesValue & unitTest conditionTest method
Arc Resistance0.0 Visible After LoginVisible After LoginVisible After Login
Comparative Tracking Index (CTI)0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Strength0.0 Visible After LoginVisible After LoginVisible After Login
Dissipation Factor0.0 Visible After LoginVisible After LoginVisible After Login
Dissipation Factor0.0 Visible After LoginVisible After LoginVisible After Login
Relative Permitivity0.0 Visible After LoginVisible After LoginVisible After Login
Relative Permitivity0.0 Visible After LoginVisible After LoginVisible After Login
Surface resistivity0.0 Visible After LoginVisible After LoginVisible After Login
Volume Resistivity0.0 Visible After LoginVisible After LoginVisible After Login

Flammability properties

PropertiesValue & unitTest conditionTest method
Flame Rating, UL 940.0 Visible After LoginVisible After LoginVisible After Login
Glow Wire Ignition Temperature (GWIT)0.0 Visible After LoginVisible After LoginVisible After Login
Glow wire flammability test (GWFI)0.0 Visible After LoginVisible After LoginVisible After Login

Mechanical properties

PropertiesValue & unitTest conditionTest method
Compressive Strength0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Strength0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Strength0.0 Visible After LoginVisible After LoginVisible After Login

Other properties

PropertiesValue & unitTest conditionTest method
Flexural Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Modulus0.0 Visible After LoginVisible After LoginVisible After Login

Physical properties

PropertiesValue & unitTest conditionTest method
Density0.0 Visible After LoginVisible After LoginVisible After Login
Density, Apparent0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage0.0 Visible After LoginVisible After LoginVisible After Login
Post Shrinkage0.0 Visible After LoginVisible After LoginVisible After Login
Water Absorption0.0 Visible After LoginVisible After LoginVisible After Login

Thermal properties

PropertiesValue & unitTest conditionTest method
Application Temperature0.0 Visible After LoginVisible After LoginVisible After Login
Application Temperature0.0 Visible After LoginVisible After LoginVisible After Login
CTE, Linear0.0 Visible After LoginVisible After LoginVisible After Login
Heat Deflection Temperature (HDT C)0.0 Visible After LoginVisible After LoginVisible After Login
Heat Deflection Temperature (HDT)0.0 Visible After LoginVisible After LoginVisible After Login
Thermal Conductivity0.0 Visible After LoginVisible After LoginVisible After Login

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