MC507U Silicone Sheet – High‑Strength, Utility‑Grade Material for Industrial Applications

MC507U is a utility grade, glass fabric combined with a silicone resin system. MC507U has excellent strength and electrical properties. MC507U complies with MIL-I-24768/17 – GSG, with the exception of some specific electrical properties.

Properties

General

Property	Value	Testing Standard	Comment
Bonding strength	340.2 Kg	ASTM D229	Condition A
Density	1.88 g/cm³	ASTM D792
Moisture absorption	0.19 %	ASTM D570	Condition D₁-24/23

Mechanical

Property	Value	Testing Standard	Comment
Flexural strength	149.6 MPa	ASTM D790	Condition A, Transverse
	167.5 MPa	ASTM D790	Condition A
Hardness, Rockwell M	100 [-]	ASTM D785
Impact strength, Izod unnotched, ASTM	614 J/m	ASTM D256	Condition E-48/50, Transverse
	907 J/m	ASTM D256	Condition E-48/50

Thermal

Property	Value	Comment
Relative temperature index, electrical	170 °C	UL Bulletin 746b¹
Relative temperature index, mechanical strength	220 °C	UL Bulletin 746b¹
Arc resistance	200 seconds, ASTM D495, Condition A
Flammability	UL Bulletin 94, Class V-0, Condition A

Electrical

Property	Value	Testing Standard	Frequency	Comment
Breakdown voltage	32 kV	ASTM D149		Condition D48/50
	55 kV	ASTM D149		Condition A
Dielectric constant	4.55 [-]	ASTM D150	1MHz	Condition A
	4.67 [-]	ASTM D150	1MHz	Condition D-24/23
Dielectric strength	13.78 kV/mm	ASTM D149		Condition A
Dissipation factor	0.018 [-]		1MHz	Condition A
	0.045 [-]		1MHz	Condition D-24/23

Technological properties

Property
Application areas	It can be substituted for NEMA G-7, in most heating, appliance insulation and some bearing applications.
Fillers	Glass Fabric
Other	1.This temperature is a recommendation only, and based upon experience in various applications. The maximum operating temperature is dependent upon the application and should be investigated prior to use
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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