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Ensinger PEI

Covestro Makrolon® DP1-1265 Polycarbonate  (discontinued **)
Categories: Polymer; Thermoplastic; Polycarbonate (PC); Polycarbonate, Optical Grade

Material Notes: Key Features:
  • Release agent
  • Unfilled

Suitable processing methods:

  • Injection molding

Information provided by Bayer Polymers.

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Physical PropertiesMetricEnglishComments
Density 1.20 g/cc0.0434 lb/in³
Melt Density 1.02 g/cc
@Temperature 280 °C
0.0368 lb/in³
@Temperature 536 °F
Water Absorption 0.30 %0.30 %
Moisture Absorption at Equilibrium 0.12 %0.12 %23°C/50% R.H.
Viscosity Number 39 cm³/g0.39 dl/g
Melt Flow 70 g/10 min
@Load 1.20 kg,
Temperature 300 °C
70 g/10 min
@Load 2.65 lb,
Temperature 572 °F
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Yield 65.0 MPa9430 psi
Elongation at Break >= 50 %>= 50 %Nominal
Elongation at Yield 6.0 %6.0 %
Tensile Modulus 2.40 GPa348 ksi
Charpy Impact Unnotched NBNB
 NB
@Temperature -30.0 °C
NB
@Temperature -22.0 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear, Parallel to Flow 60.0 µm/m-°C
@Temperature 20.0 °C
33.3 µin/in-°F
@Temperature 68.0 °F
CTE, linear, Transverse to Flow 60.0 µm/m-°C
@Temperature 20.0 °C
33.3 µin/in-°F
@Temperature 68.0 °F
Specific Heat Capacity 1.70 J/g-°C0.406 BTU/lb-°FMelt
Thermal Conductivity 0.173 W/m-K1.20 BTU-in/hr-ft²-°FMelt
Deflection Temperature at 0.46 MPa (66 psi) 136 °C277 °F
Deflection Temperature at 1.8 MPa (264 psi) 122 °C252 °F
Vicat Softening Point 143 °C289 °F50°C/h 50N
Glass Transition Temp, Tg 145 °C293 °F10°C/min
 
Optical PropertiesMetricEnglishComments
Transmission, Visible 90 %90 %Manufacturer states transparent but does not quantify
 
Processing PropertiesMetricEnglishComments
Melt Temperature 280 °C536 °FInjection Molding
Mold Temperature 80.0 °C176 °FInjection Molding
Ejection Temperature 130 °C266 °F
Injection Velocity 200 mm/sec7.87 in/sec
 
Descriptive Properties
Effective thermal diffusivity0.1E-6 m²/sMelt

**
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