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Cast Nylons Nycast® CP Caprolactam/Laurinlactum Copolymer Cast Nylon
Categories: Polymer; Thermoplastic; Nylon (Polyamide PA)

Material Notes: Highly resilient, with higher tensile elongation and impact strength than standard grades, NYCAST® CP is used applications requiring an extra degree of toughness. A copolymer of caprolactam and laurinlactam, NYCAST® CP was originally developed specifically for use in ball valve seats in the oil and gas industry.

NYCAST®CP with its higher elongation, superior dimensional stability and safety yellow color has found itself a superior choice for wobbler box inserts and coupling boxes in the cold rolling steel industry and mandrels covers in paper tube manufacturing plants.

Data provided by the manufacturer, Cast Nylons Limited.

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Physical PropertiesOriginal ValueComments
Density 1.10 - 1.13 g/ccASTM D792
Water Absorption 0.50 - 0.60 %24 hrs; ASTM D570
Water Absorption at Saturation 4.0 - 5.0 %ASTM D570
Deformation 0.40 - 0.80 %ASTM D621
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell R 100 - 115ASTM D785
Hardness, Shore D 75 - 81ASTM D2240
Tensile Strength 8700 - 11500 psiASTM D638
Elongation at Break 25 - 80 %ASTM D638
Tensile Modulus 240000 - 330000 psiASTM D638
Flexural Strength 15000 - 20000 psiASTM D790
Flexural Modulus 285 - 385 ksiASTM D790
Compressive Strength 11000 - 12500 psiASTM D695
Compressive Modulus 200000 - 300000 psiASTM D695
Shear Strength 7600 - 9000 psiASTM D732
Izod Impact, Notched 0.900 - 1.40 ft-lb/inASTM D256
Coefficient of Friction, Dynamic 0.22ASTM D1894
 
Electrical PropertiesOriginal ValueComments
Dielectric Constant 3.7
@Frequency 60 Hz
ASTM D150
 3.7
@Frequency 1000 Hz
ASTM D150
 3.7
@Frequency 1e+6 Hz
ASTM D150
Dielectric Strength 500 - 600 kV/inASTM D149
 
Thermal PropertiesOriginal ValueComments
CTE, linear 50.0 µin/in-°F
Melting Point 400 - 420 °F
Maximum Service Temperature, Air 210 °FContinuous
 300 °FIntermittent
Deflection Temperature at 0.46 MPa (66 psi) 400 - 430 °FASTM D648
Deflection Temperature at 1.8 MPa (264 psi) 200 - 400 °FASTM D648

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PCAST59 / 149807

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