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Norplex-Micarta NP318 Phenolic Cotton Laminate Sheet, NEMA CF  (discontinued **)
Categories: Polymer; Thermoset; Phenolic
Material Notes: This product has been replaced by Norplex-Micarta NP318U

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.

Information provided by Norplex-Micarta
Key Words: Cotton, Phenolic, Micarta, NEMA CF, Post-forming canvas
Vendors: Norplex-Micarta is the leading manufacturer of high performance thermoset composite materials. We work directly with customers to manufacture the highest quality specialty sheet products, pre-pregs, rods and molded shapes, and tubes to meet demanding composite applications for our OEMs and fabricators around the world. Visit norplex-micarta.com.

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.35 g/cc
@Thickness 12.7 mm		ASTM D792
Moisture Absorption 4.20 %
@Thickness 1.57 mm		ASTM D570 Condition A
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell M 90
@Thickness 6.35 mm		ASTM D785
Tensile Strength 6000 psi
@Thickness 3.17 mm		CrossWise; ASTM D638 Condition A
 10000 psi
@Thickness 3.17 mm		LengthWise; ASTM D638 Condition A
Flexural Strength 14000 psi
@Thickness 1.57 mm		CrossWise; ASTM D790 Condition A
 17000 psi
@Thickness 1.57 mm		LengthWise; ASTM D790 Condition A
Flexural Modulus 900 ksi
@Thickness 1.57 mm		CrossWise; ASTM D790 Condition A
 1100 ksi
@Thickness 1.57 mm		LengthWise; ASTM D790 Condition A
Compressive Strength 25000 psi
@Thickness 12.7 mm		Flatwise; ASTM D695 Condition A
Shear Strength 12000 psi
@Thickness 1.57 mm		perpendicular; ASTM D732 Condition A
Izod Impact, Unnotched 2.00 ft-lb/in
@Thickness 12.7 mm		CrossWise; ASTM D256 Condition E-48/50
 2.50 ft-lb/in
@Thickness 12.7 mm		LengthWise; ASTM D256 Condition E-48/50
 
Electrical PropertiesOriginal ValueComments
Dielectric Strength 350 V/mil
@Thickness 1.57 mm		ASTM D149 Condition D-48/50
 480 V/mil
@Thickness 1.57 mm		ASTM D149 Condition A
Dielectric Breakdown 4000 V
@Thickness 1.57 mm		ASTM D149 Condition D-48/50
 65000 V
@Thickness 1.57 mm		ASTM D149 Condition A
Arc Resistance 10 sec
@Thickness 3.17 mm		ASTM D495 Conition A
Comparative Tracking Index 150 V
@Thickness 3.17 mm		ASTM D3638
 
Thermal PropertiesOriginal ValueComments
UL RTI, Electrical 125 °CUL Bulletin 746b
UL RTI, Mechanical with Impact 125 °CUL Bulletin 746b
Flammability, UL94 HB
@Thickness 1.57 mm
 
Descriptive Properties
Bonding Strength1800[lb]; 0.5"; ASTM D229 Condition D-48/50

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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