Hostaform® C 2521 LS

Category: Acetal (POM) Copolymer , Acetal (POM) Copolymer
Manufacturer: Celanese Corporation
Trademark: Hostaform®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: ZDdqTL_Hostaform-C-2521-LS.pdf
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POM copolymer

Stiff-flowing type for injection molding and extrusion with high impact toughness and good tracking resistance over a high range of temperature; good chemical resistance to solvents, fuel and strong
alkalis as well as good hydrolysis resistance; high resistance to thermal and oxidative degradation.
This grade has been specially stabilized to prevent discoloration and deterioration of mechanical properties from ultraviolet light exposure.
The material is available in natural, black and colored.

Burning rate ISO 3795 and FMVSS 302 < 75 mm/min for a thickness more
than 1 mm.

Ranges of applications: injection molding thick-walled, void-free
molded parts; extrusion e.g. for boards and pipes.

FMVSS = Federal Motor Vehicle Safety Standard (USA)
General Information
Additive
  • UV stabilizer
Features
  • Solvent resistance
  • Impact resistance, high
  • Good chemical resistance
  • alkali resistance
  • Fuel resistance
Uses
  • Piping system
  • Thick wall fittings (parts)
RoHS Compliance
  • Contact manufacturer
Appearance
  • Black
  • Available colors
  • Natural color
Processing Method
  • Extrusion
  • Injection molding
PhysicalNominal ValueUnitTest Method
Density 1.41g/cm³ISO 1183
Melt Volume-Flow Rate (MVR) (190°C/2.16 kg)2.50cm³/10minISO 1133
Molding Shrinkage ISO 294-4
    Vertical flow direction 1.8%ISO 294-4
    Flow direction 2.1%ISO 294-4
Water Absorption (Saturation, 23°C)0.65%ISO 62
MechanicalNominal ValueUnitTest Method
Tensile Modulus 2600MPaISO 527-2/1A/1
Tensile Stress (Yield)62.0MPaISO 527-2/1A/50
Tensile Strain (Yield)9.0%ISO 527-2/1A/50
Nominal Tensile Strain at Break 32%ISO 527-2/1A/50
Tensile Creep Modulus ISO 899-1
    1 hr 2300MPaISO 899-1
    1000 hr 1100MPaISO 899-1
Flexural Modulus (23°C)2500MPaISO 178
ImpactNominal ValueUnitTest Method
Charpy Notched Impact Strength ISO 179/1eA
    -30°C 7.0kJ/m²ISO 179/1eA
    23°C 8.5kJ/m²ISO 179/1eA
Charpy Unnotched Impact Strength ISO 179/1eU
    -30°C 200kJ/m²ISO 179/1eU
    23°C, local fracture 220kJ/m²ISO 179/1eU
ThermalNominal ValueUnitTest Method
Heat Deflection Temperature (1.8 MPa, Unannealed)101°CISO 75-2/A
Melting Temperature 1165°CISO 11357-3
CLTE - Flow 1.1E-4cm/cm/°CISO 11359-2
ElectricalNominal ValueUnitTest Method
Surface Resistivity 1.0E+14ohmsIEC 60093
Volume Resistivity 1.0E+14ohms·cmIEC 60093
Dielectric Strength 35kV/mmIEC 60243-1
Relative Permittivity IEC 60250
    100 Hz 4.00IEC 60250
    1 MHz 4.00IEC 60250
Dissipation Factor IEC 60250
    100 Hz 1.5E-3IEC 60250
    1 MHz 5.0E-3IEC 60250
Comparative Tracking Index 600VIEC 60112
FlammabilityNominal ValueUnitTest Method
Flame Rating UL 94
    1.50 mm HBUL 94
    3.00 mm HBUL 94
Fill AnalysisNominal ValueUnitTest Method
Density of Melt 1.200g/cm³Internal method
Ejection Temperature 165°CInternal method
Specific Heat Capacity of Melt 2210J/kg/°CInternal method
Thermal Conductivity of Melt 0.16W/m/KInternal method
InjectionNominal ValueUnit
Drying Temperature 120 - 140°C
Drying Time 3.0 - 4.0hr
Suggested Max Moisture 0.15%
Hopper Temperature 20.0 - 30.0°C
Rear Temperature 170 - 180°C
Middle Temperature 180 - 190°C
Front Temperature 190 - 200°C
Nozzle Temperature 190 - 210°C
Processing (Melt) Temp 190 - 210°C
Mold Temperature 80.0 - 120°C
Injection Pressure 60.0 - 120MPa
Injection Rate Slow-Moderate
Holding Pressure 60.0 - 120MPa
Back Pressure 0.00 - 4.00MPa
Injection instructions
Manifold Temperature: 190 to 210°CZone 4 Temperature: 190 to 210°CFeed Temperature: 60 to 80°C
Note Message
1 .10°C/min
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