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Norplex-Micarta NP329 Epoxy Cotton Laminate Sheet
Categories: Polymer; Thermoset; Epoxy
Material Notes: Bleached linen with melamine resin system. NP329 provides better arc resistance than NP320E. Also, resistant to ammonia based refrigerants. Hard, durable material should be heated to punch, but machines very well with standard machining equipment. NP329 meets UL94, HB.

Information provided by Norplex-Micarta
Key Words: Cotton, Epoxy, Micarta
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 1.47 g/cc
@Thickness 12.7 mm		ASTM D792
Moisture Absorption 3.60 %
@Thickness 1.57 mm		ASTM D570 Condition D1-24/23
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell M 95
@Thickness 6.35 mm		ASTM D785
Tensile Strength 13700 psi
@Thickness 3.17 mm		CrossWise; ASTM D638 Condition A
 24100 psi
@Thickness 3.17 mm		LengthWise; ASTM D638 Condition A
Flexural Strength 25500 psi
@Thickness 1.57 mm		CrossWise; ASTM D790 Condition A
 32200 psi
@Thickness 1.57 mm		LengthWise; ASTM D790 Condition A
Flexural Modulus 1100 ksi
@Thickness 1.57 mm		CrossWise; ASTM D790 Condition A
 1700 ksi
@Thickness 1.57 mm		LengthWise; ASTM D790 Condition A
Compressive Strength 44000 psi
@Thickness 12.7 mm		Flatwise; ASTM D695 Condition A
Shear Strength 26000 psi
@Thickness 1.57 mm		perpendicular; ASTM D732 Condition A
Izod Impact, Unnotched 1.30 ft-lb/in
@Thickness 12.7 mm		CrossWise; ASTM D256 Condition E-48/50
 1.80 ft-lb/in
@Thickness 12.7 mm		LengthWise; ASTM D256 Condition E-48/50
 
Electrical PropertiesOriginal ValueComments
Dielectric Constant 8.6
@Thickness 1.57 mm,
Frequency 1e+6 Hz		ASTM D150 Condition D-24/23
Dielectric Strength 100 V/mil
@Thickness 1.57 mm		ASTM D149 Condition D-48/50
 380 V/mil
@Thickness 1.57 mm		ASTM D149 Condition A
Dielectric Breakdown 9000 V
@Thickness 1.57 mm		ASTM D149 Condition D-48/50
 65000 V
@Thickness 1.57 mm		ASTM D149 Condition A
Dissipation Factor 0.090
@Thickness 1.57 mm,
Frequency 1e+6 Hz		ASTM D150 Condition D-24/23
Arc Resistance 135 sec
@Thickness 3.17 mm		ASTM D495 Conition A
Comparative Tracking Index 200 V
@Thickness 3.17 mm		ASTM D3638
 
Thermal PropertiesOriginal ValueComments
CTE, linear, Parallel to Flow 18.0 µm/m-°C
@Thickness 3.17 mm		IPC-TM 650-2.4.24
CTE, linear, Transverse to Flow 19.0 µm/m-°C
@Thickness 3.17 mm		IPC-TM 650-2.4.24
UL RTI, Mechanical with Impact 130 °CUL Bulletin 746b
Flammability, UL94 HB
@Thickness 1.57 mm
 
Descriptive Properties
Bonding Strength1600[lb]; 0.5"; ASTM D229 Condition D-48/50

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