Epoxy RT521M Tube – High-Performance Cryogenic Composite Material

Medium weight glass fabric with epoxy resin system. RT521M combines excellent electrical characteristics with superior physical properties at cryogenic temperatures (-270 °C to 135 °C operating temperature range). Electrical properties maintained in high humidity conditions. RT521M is not flame resistant. RT521M is comparable sheet grade to Norplex-Micarta's sheet grade NP500CR.

Properties

General

Property	Value	Testing Standard	Comment
Density	1.78 g/cm³	ASTM D792
Moisture absorption	0.05 %	ASTM D570	Condition D₁-24/23

Mechanical

Property	Value	Testing Standard	Comment
Compressive modulus	7.6 GPa	ASTM D695	Condition A
Compressive strength	320.6 MPa	ASTM D695	Condition A
Hardness, Rockwell M	110 [-]	ASTM D785
Tensile strength	310.3 MPa	ASTM D638	Condition A

Thermal

Property	Value	Comment
Relative temperature index, electrical	130 °C	¹
Relative temperature index, mechanical strength	135 °C	¹
Flammability	UL Bulletin 94, Class HB

Electrical

Property	Value	Testing Standard	Comment
Breakdown voltage	85 kV	ASTM D149	Condition A
Dielectric strength	19.68 kV/mm	ASTM D149	Condition D-48/50
	23.62 kV/mm	ASTM D149	Condition A

Technological properties

Property
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 2.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.

Property

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

2.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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