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Ensinger PEI

Celanese Hostaform® C 13021 K Acetal Copolymer with Special Chalk
Categories: Polymer; Thermoplastic; Acetal (Polyoxymethylene, POM); Acetal Copolymer, Mineral Filled
Material Notes: Description: Hostaform® Acetal Copolymers are a high strength, crystalline, thermoplastic engineering resins whose balance of properties and ease of processability offer performance and cost advantages over many other materials.

Specific Notes for this Grade: Easy flowing injection molding grade modified with special chalk. Good antiwear properties, increased strength. For unlubricated or once-only lubricated sliding elements.

Information provided by Celanese Corporation.
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Physical PropertiesMetricEnglishComments
Density 1.44 g/cc0.0520 lb/in³10x10x4 mm from multi-purpose test specimen (ISO 3167); ISO 1183
Moisture Absorption at Equilibrium 0.20 %0.20 %80x80x1mm, at 23°C and 50% RH; ISO 62
Water Absorption at Saturation 0.65 %0.65 %80x80x1mm, 23°C; ISO 62
Melt Flow 15.84 g/10 min
@Load 2.16 kg,
Temperature 190 °C		15.84 g/10 min
@Load 4.76 lb,
Temperature 374 °F		Calculated from Volume flow Rate: 11 cm3/10min; ISO 1133
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Yield 68.0 MPa9860 psimulti-purpose test specimen (ISO 3167); ISO 527, part 1/2; test speed 50 mm/min
Elongation at Break 15 %15 %multi-purpose specimen (ISO 3167); ISO 527, part 1/2; test speed 50 mm/min
Elongation at Yield 8.0 %8.0 %multi-purpose test specimen (ISO 3167); ISO 527, part 1/2; test speed 50 mm/min
Tensile Modulus 3.10 GPa450 ksimulti-purpose test specimen (ISO 3167); ISO 527, part 1/2; test speed 50 mm/min
Charpy Impact, Notched 0.500 J/cm²
@Temperature -30.0 °C		2.38 ft-lb/in²
@Temperature -22.0 °F		80x10x4 m from multi-purpose test specimen (ISO 3167); ISO 179 1eA
 0.500 J/cm²
@Thickness 4.00 mm,
Temperature 23.0 °C		2.38 ft-lb/in²
@Thickness 0.157 in,
Temperature 73.4 °F		80x10x4 m from multi-purpose test specimen (ISO 3167); ISO 179 1eA
 
Electrical PropertiesMetricEnglishComments
Dielectric Constant  4.2
@Frequency 100 Hz		4.2
@Frequency 100 Hz		80x80x1 mm; IEC 60250
 4.2
@Frequency 1e+6 Hz		4.2
@Frequency 1e+6 Hz		80x80x1 mm; IEC 60250
Dielectric Strength 35.0 kV/mm889 kV/in80x80x1 mm; IEC 60243, part 1
Dissipation Factor  0.0025
@Frequency 100 Hz		0.0025
@Frequency 100 Hz		80x80x1 mm; IEC 60250
 0.0080
@Frequency 1e+6 Hz		0.0080
@Frequency 1e+6 Hz		80x80x1 mm; IEC 60250
 
Thermal PropertiesMetricEnglishComments
CTE, linear 110 µm/m-°C
@Temperature 23.0 - 55.0 °C		61.1 µin/in-°F
@Temperature 73.4 - 131 °F		Longitudinal, 30x10x4 mm from multi-purpose test specimen (ISO 3167); ISO 11359, part 1/2
Melting Point 170 °C338 °FDSC, 10 K/min, Molding compound; ISO 3146, method C1b
Deflection Temperature at 1.8 MPa (264 psi) 105 °C221 °F80x10x4 mm from multi-purpose test specimen (ISO 3167); ISO 75, part 1/2
Vicat Softening Point 156 °C313 °FVST/B/50, 10x10x4 mm from multi-purpose test specimen (ISO 3167); ISO 306

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