NP318 Phenolic Sheet – High-Performance Post-Forming Canvas

Post-forming canvas phenolic material. NP318’s mechanical and electrical properties are similar to NP310E. It is made from a cotton fabric weighing more than 4 ounces per square yard and having a thread count of not more than 70 threads per inch in both the warp and filler directions. The binder is a modified phenolic resin system, which permits the material to be heated, formed into a shape and cooled under restraint to hold the newly formed shape.

Properties

General

Property	Value	Testing Standard	Comment
Bonding strength	816.5 Kg	ASTM D229	Condition A
Density	1.35 g/cm³	ASTM D792
Moisture absorption	4.2 %	ASTM D570	Condition A

Mechanical

Property	Value	Testing Standard	Comment
Compressive strength	172.4 MPa	ASTM D695	Condition A \| Flatwise
Flexural modulus	6.2 GPa	ASTM D790	Condition A, Transverse
	7.6 GPa	ASTM D790	Condition A
Flexural strength	96.5 MPa	ASTM D790	Condition A, Transverse
	117.2 MPa	ASTM D790	Condition A
Hardness, Rockwell M	90 [-]	ASTM D785
Impact strength, Izod unnotched, ASTM	107 J/m	ASTM D256	Condition E-48/50, Transverse
	133 J/m	ASTM D256	Condition E-48/50
Shear strength	82.7 MPa	ASTM D732	Condition A, Transverse
Tensile strength	68.9 MPa	ASTM D638	Condition A

Thermal

Property	Value	Comment
Relative temperature index, electrical	125 °C	UL Bulletin 746b¹
Relative temperature index, mechanical strength	125 °C	UL Bulletin 746b¹
Arc resistance	10 seconds, ASTM D495, Condition A

Electrical

Property	Value	Testing Standard	Comment
Breakdown voltage	4 kV	ASTM D149	Condition D48/50
	65 kV	ASTM D149	Condition A
Comparative tracking index	150 V	ASTM D3638
Dielectric strength	13.78 kV/mm	ASTM D149	Condition D-48/50
	18.9 kV/mm	ASTM D149	Condition A

Technological properties

Property
Fillers	Cotton 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.

Property

Fillers

Cotton 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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