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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Material Notes: This product has been replaced by Norplex-Micarta NP318U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 PropertiesMetricEnglishComments
Specific Gravity 1.35 g/cc
@Thickness 12.7 mm		1.35 g/cc
@Thickness 0.500 in		ASTM D792
Moisture Absorption 4.20 %
@Thickness 1.57 mm		4.20 %
@Thickness 0.0620 in		ASTM D570 Condition A
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell M 90
@Thickness 6.35 mm		90
@Thickness 0.250 in		ASTM D785
Tensile Strength  41.4 MPa
@Thickness 3.17 mm		6000 psi
@Thickness 0.125 in		CrossWise; ASTM D638 Condition A
 68.9 MPa
@Thickness 3.17 mm		10000 psi
@Thickness 0.125 in		LengthWise; ASTM D638 Condition A
Flexural Strength  96.5 MPa
@Thickness 1.57 mm		14000 psi
@Thickness 0.0620 in		CrossWise; ASTM D790 Condition A
 117 MPa
@Thickness 1.57 mm		17000 psi
@Thickness 0.0620 in		LengthWise; ASTM D790 Condition A
Flexural Modulus  6.21 GPa
@Thickness 1.57 mm		900 ksi
@Thickness 0.0620 in		CrossWise; ASTM D790 Condition A
 7.58 GPa
@Thickness 1.57 mm		1100 ksi
@Thickness 0.0620 in		LengthWise; ASTM D790 Condition A
Compressive Strength 172 MPa
@Thickness 12.7 mm		25000 psi
@Thickness 0.500 in		Flatwise; ASTM D695 Condition A
Shear Strength 82.7 MPa
@Thickness 1.57 mm		12000 psi
@Thickness 0.0620 in		perpendicular; ASTM D732 Condition A
Izod Impact, Unnotched  1.07 J/cm
@Thickness 12.7 mm		2.00 ft-lb/in
@Thickness 0.500 in		CrossWise; ASTM D256 Condition E-48/50
 1.33 J/cm
@Thickness 12.7 mm		2.50 ft-lb/in
@Thickness 0.500 in		LengthWise; ASTM D256 Condition E-48/50
 
Electrical PropertiesMetricEnglishComments
Dielectric Strength  13.8 kV/mm
@Thickness 1.57 mm		350 kV/in
@Thickness 0.0620 in		ASTM D149 Condition D-48/50
 18.9 kV/mm
@Thickness 1.57 mm		480 kV/in
@Thickness 0.0620 in		ASTM D149 Condition A
Dielectric Breakdown  4000 V
@Thickness 1.57 mm		4000 V
@Thickness 0.0620 in		ASTM D149 Condition D-48/50
 65000 V
@Thickness 1.57 mm		65000 V
@Thickness 0.0620 in		ASTM D149 Condition A
Arc Resistance 10 sec
@Thickness 3.17 mm		10 sec
@Thickness 0.125 in		ASTM D495 Conition A
Comparative Tracking Index 150 V
@Thickness 3.17 mm		150 V
@Thickness 0.125 in		ASTM D3638
 
Thermal PropertiesMetricEnglishComments
UL RTI, Electrical 125 °C257 °FUL Bulletin 746b
UL RTI, Mechanical with Impact 125 °C257 °FUL Bulletin 746b
Flammability, UL94 HB
@Thickness 1.57 mm		HB
@Thickness 0.0620 in
 
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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