NP572 Epoxy Sheet – High‑Strength, Temperature‑Resistant Glass Laminate for Class H Insulation

NP572 is a high strength, medium weave glass epoxy laminate that retains a minimum of 50 percent of its room temperature flexural strength when tested at 150ᴼC and its Tg is guaranteed to be 180°C or greater. NP572 is certifiable to IEC 60216-3, IEEE STD 98-2002 and ASTM D2304 for Class H insulation in electrical devices. NP572 is also certifiable to MIL-I-24768/3, Type GEB and IEC 60893-3-2-EP GC 308 and EP GC203.

Properties

General

Property	Value	Comment
Bonding strength	816.46 Kg	Condition A
Density	1.89 g/cm³
Moisture absorption	0.2 %	Condition D₁-24/23

Mechanical

Property	Value	Testing Standard	Comment
Compressive strength	497.1 MPa		Condition A \| Flatwise
Flexural strength	289 MPa	ASTM D790	Condition E-1/150: T-150, Transverse
	315 MPa	ASTM D790	Condition E-1/150: T-150
	365.4 MPa	ASTM D790	Condition A, Transverse
	472.3 MPa	ASTM D790	Condition A
Hardness, Rockwell M	108 [-]
Impact strength, Izod notched, ASTM	549.8 J/m		Condition E-48/50, Transverse
	667.2 J/m		Condition E-48/50
Shear strength	173.7 MPa		Transverse
Tensile strength	326.1 MPa

Thermal

Property	Value	Comment
Glass transition temperature	180 °C	min. \| DMA
Arc resistance	185 seconds, ASTM D495, Condition A
Flammability	UL 94, Class V-0

Electrical

Property	Value	Frequency	Comment
Breakdown voltage	69 kV		Condition A
Dielectric constant	4.1 [-]	1MHz	Condition D₁-24/23
Dielectric strength	26.77 kV/mm		Condition D-48/50
	29.92 kV/mm		Condition A
Dissipation factor	0.018 [-]	1MHz	Condition D-24/23

Technological properties

Property
Application areas	Typical applications include electrical equipment subjected to elevated temperatures.
Fillers	Glass Fabric
Other	The mechanical properties are converted from American unit system to International unit system.
Supplier Disclaimer	This data, while believed to be accurate and based on reliable analytical methods, is for informational purposes only. The terms and conditions of the agreement under which it is sold will govern any sales of this product. Data supplied above are "typical values"; not to be considered "specification values". To assure the material's performance is adequate for a specific application; customers should verify, independent of Norplex-Micarta, performance characteristics of interest. It is the responsibility of the users of this information to make sure that they have the latest version of this TDB, and are urged to check with Customer Service or, preferably our web site, www.norplex-micarta.com, to determine if the information is the most current available.

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