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Edistir® R 321P

Medium Impact Polystyrene

Supplied by Polimeri Europa

The technical datasheet with complete property values for Edistir® R 321P is available to members of the Prospector Plastics Database.
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Product Description
Medium impact polystyrene combining easy flow and high stiffness.

For injection moulding of parts with low thickness and high rigidity.

Designation: Thermoplastics ISO 2897-PS-I,M,083-12-04-30

Typical uses are toys, stationery, small containers for packaging, refrigerator components, point of sales, household wares, disposable razors, technical items.

R 321P is certified UL94 HB "all colors" at 1.5 mm (UL file E83071).

This grade in its natural version complies by composition with the requirements set by the main Regulations for plastic materials intended for food contact (including the EEC Directive 2002/72/CE and subsequent amendments).
General  
Material Status 
  • Commercial: Active
Availability 
  • Europe
Features 
  • Food Contact Acceptable
  • Good Flow
  • High Rigidity
  • High Stiffness
  • Medium Impact Resistance
Uses 
  • Consumer Applications
  • Containers
  • Electrical/Electronic Applications
  • Household Goods
  • Low Temperature Applications
  • Packaging
  • Stationary Supplies
  • Toys
Agency Ratings 
Forms 
  • Pellets
Processing Method 
  • Injection Molding
Multi-Point Data 
  • Isothermal Stress vs. Strain (ISO 11403-1)
  • Secant Modulus vs. Strain (ISO 11403-1)
  • Shear Modulus vs. Temperature (ISO 11403-1)
  • Specific Volume vs Temperature (ISO 11403-2)
  • Viscosity vs. Shear Rate (ISO 11403-2)
Physical
Nominal Value
Unit
Test Method
Density
g/cm³
ISO 1183
Apparent Density
g/cm³
ISO 60
Melt Mass-Flow Rate (MFR) (200°C/5.0 kg)
g/10 min
ISO 1133
Molding Shrinkage
%
Internal Method
Water Absorption (73°F, 24 hr)
%
ISO 62
Mechanical
Nominal Value
Unit
Test Method
Tensile Modulus
psi
ISO 527-2/1
Tensile Stress
    ISO 527-2/50
Yield
psi
 
Break
psi
 
Tensile Strain (Break)
%
ISO 527-2/50
Flexural Strength 2
psi
ISO 178
Impact
Nominal Value
Unit
Test Method
Notched Izod Impact
     
73°F, 0.126 in
ft·lb/in
ISO 180/4A
-22°F
ft·lb/in²
ISO 180/1A
73°F
ft·lb/in²
ISO 180/1A
Hardness
Nominal Value
Unit
Test Method
Rockwell Hardness (L-Scale)
 
ISO 2039-2
Thermal
Nominal Value
Unit
Test Method
Deflection Temperature Under Load (264 psi, Annealed)
°F
ASTM D648
Vicat Softening Temperature
     
--
°F
ISO 306/A50
--
°F
ISO 306/B50
CLTE - Flow
in/in/°F
ASTM D696
Thermal Conductivity
Btu·in/hr/ft²/°F
ISO 8302
Electrical
Nominal Value
Unit
Test Method
Surface Resistivity
ohms
IEC 60093
Volume Resistivity
ohm·cm
IEC 60093
Dielectric Constant (50 Hz)
 
IEC 60250
Dissipation Factor (50 Hz)
 
IEC 60250
Comparative Tracking Index (Solution A)
V
IEC 60112
Electric Strength
V/mil
IEC 60243-1
Flammability
Nominal Value
Unit
Test Method
Flame Rating - UL (0.0591 in, All Colors)
 
UL 94
Glow Wire Ignition Temperature (0.0630 in)
°F
IEC 60695-2-13
UL File Number
 
 
Additional Information
Nominal Value
Unit
Test Method
Designation
 
 
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: Edistir® R 321P, Edistir R 321P, Edistir® , Edistir, EdistirR321P, R 321 P, R 321P, R321, 321P, R321P, PS, Polystyrene, Medium Impact, Polystyrene Medium Impact, PS (MIPS), PS MIPS, Polystyrene, Polimeri Europa, PolystyreneMediumImpact, PSMIPS, 321R
Features
Features may also be described by the following terms: High Stiffness, High Rigidity, Medium Impact Resistance, Good Flow.
Uses
Uses may also be described by the following terms: Household Goods, Housewares, Electrical Applications, Electronic Applications, Electrical/Electronic Applications, Electrical Sector.
Agency Ratings
This plastic material has 1 certifications from the following agencies (the number in parentheses shows the number of certifications for that agency): EU (1).
Injection
Nominal Value
Unit
 
Processing (Melt) Temp
°F
 
Mold Temperature
°F
 
Injection Notes
Predrying normally not required
Notes
1Typical properties: these are not to be construed as specifications.
20.079 in/min
 
IDES
Copyright © 2012 IDES
The information presented on this datasheet was acquired by IDES from the producer of the material. IDES makes substantial efforts to assure the accuracy of this data. However, IDES assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.