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This is the free Material Data Center Datasheet of Makrolon® 2805 - PC - Covestro Deutschland AG

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Product Texts
  • MVR (300 °C/1.2 kg) 9.0 cm³/10 min
  • general purpose
  • medium viscosity
  • easy release
Processing/Physical CharacteristicsValueUnitTest Standard
ISO Data
Melt volume-flow rate, MVR 9 cm³/10min ISO 1133
Temperature 300 °C -
Load 1.2 kg -
Molding shrinkage, parallel 0.7 % ISO 294-4, 2577
Molding shrinkage, normal 0.7 % ISO 294-4, 2577
Mechanical propertiesValueUnitTest Standard
ISO Data
Tensile Modulus 2400 MPa ISO 527
Yield stress 66 MPa ISO 527
Yield strain 6.2 % ISO 527
Nominal strain at break >50 % ISO 527
Tensile creep modulus, 1h 2200 MPa ISO 899-1
Tensile creep modulus, 1000h 1900 MPa ISO 899-1
Charpy impact strength, +23°C N kJ/m² ISO 179/1eU
Charpy impact strength, -30°C N kJ/m² ISO 179/1eU
Puncture - maximum force, +23°C 5400 N ISO 6603-2
Puncture - maximum force, -30°C 6300 N ISO 6603-2
Puncture energy, +23°C 60 J ISO 6603-2
Puncture energy, -30°C 65 J ISO 6603-2
Thermal propertiesValueUnitTest Standard
ISO Data
Glass transition temperature, 10°C/min 145 °C ISO 11357-1/-2
Temp. of deflection under load, 1.80 MPa 125 °C ISO 75-1/-2
Temp. of deflection under load, 0.45 MPa 137 °C ISO 75-1/-2
Vicat softening temperature, B 144 °C ISO 306
Coeff. of linear therm. expansion, parallel 65 E-6/K ISO 11359-1/-2
Coeff. of linear therm. expansion, normal 65 E-6/K ISO 11359-1/-2
Burning Behav. at thickness h V-2 class IEC 60695-11-10
Thickness tested 0.8 mm -
Oxygen index 28 % ISO 4589-1/-2
Electrical propertiesValueUnitTest Standard
ISO Data
Relative permittivity, 100Hz 3.1 - IEC 62631-2-1
Relative permittivity, 1MHz 3 - IEC 62631-2-1
Dissipation factor, 100Hz 5 E-4 IEC 62631-2-1
Dissipation factor, 1MHz 90 E-4 IEC 62631-2-1
Volume resistivity >1E13 Ohm*m IEC 62631-3-1
Surface resistivity >1E15 Ohm IEC 62631-3-2
Electric strength 34 kV/mm IEC 60243-1
Comparative tracking index 250 - IEC 60112
Optical propertiesValueUnitTest Standard
ISO Data
Luminous transmittance 89 % ISO 13468-1, -2
Other propertiesValueUnitTest Standard
Water absorption 0.3 % Sim. to ISO 62
Humidity absorption 0.12 % Sim. to ISO 62
Density 1200 kg/m³ ISO 1183
Test specimen productionValueUnitTest Standard
ISO Data
Injection Molding, melt temperature 300 °C ISO 294
Injection Molding, mold temperature 80 °C ISO 294
Injection Molding, injection velocity 200 mm/s ISO 294
Diagrams
Viscosity-shear rate , Makrolon® 2805, PC, Covestro
Shearstress-shear rate , Makrolon® 2805, PC, Covestro
Dynamic Shear modulus-temperature , Makrolon® 2805, PC, Covestro
Stress-strain , Makrolon® 2805, PC, Covestro
Secant modulus-strain , Makrolon® 2805, PC, Covestro
Stress-strain (isochronous) 23°C, Makrolon® 2805, PC, Covestro
Creep modulus-time 23°C, Makrolon® 2805, PC, Covestro
Creep curve 23°C, Makrolon® 2805, PC, Covestro
Stress-strain (isochronous) 40°C, Makrolon® 2805, PC, Covestro
Creep modulus-time 40°C, Makrolon® 2805, PC, Covestro
Creep curve 40°C, Makrolon® 2805, PC, Covestro
Stress-strain (isochronous) 60°C, Makrolon® 2805, PC, Covestro
Creep modulus-time 60°C, Makrolon® 2805, PC, Covestro
Creep curve 60°C, Makrolon® 2805, PC, Covestro
Stress-strain (isochronous) 90°C, Makrolon® 2805, PC, Covestro
Creep modulus-time 90°C, Makrolon® 2805, PC, Covestro
Creep curve 90°C, Makrolon® 2805, PC, Covestro
Stress-strain (isochronous) 120°C, Makrolon® 2805, PC, Covestro
Creep modulus-time 120°C, Makrolon® 2805, PC, Covestro
Creep curve 120°C, Makrolon® 2805, PC, Covestro
Specific volume-temperature (pvT) , Makrolon® 2805, PC, Covestro
Characteristics
Processing
Injection Molding
Delivery form
Pellets
Additives
Release agent
Special Characteristics
Transparent
Regional Availability
North America, Europe, Asia Pacific, South and Central America, Near East/Africa
Other text information
Injection molding
PREPROCESSING
Max. Water content: 0.01 - 0.02 %
Drying temperature: 120 °C
Drying time:
Circulating air drying oven (50 % fresh air) 4-8 h
Fresh air dryer (high speed dryer) 2-4 h
Dry air dryer 2-3 h

PROCESSING
Melt temperature: 280-320 °C
Mold temperature: 80-100 °C

Use open nozzle.
Application examples
Nock, bow archery
Disclaimer
Copyright Altair Engineering GmbH. Altair Engineering GmbH assumes no liability for the system to be free of errors. The user takes sole responsibility for the use of this data under the exclusion of every liability from Altair Engineering GmbH; this is especially valid for claims of compensation resulting from consequential damages. Altair explicitly points out that any decision about the application of materials must be double checked with the producer of this material. This includes all contents of this system. Copyright laws are applicable for the content of this system.
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