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API PS 550-HF Data Sheet

High Impact Polystyrene

Supplied by American Polymers, Inc.

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Product Description
API 550-HF is a high impact grade of polystyrene. It is characterized by good impact and processability. API 550-HF offers good retention of mechanical properties in applications with long flow length requirements.
General  
Material Status 
  • Commercial: Discontinued
Availability 
  • North America
Features 
  • Good Processability
  • High Impact Resistance
 
Forms 
  • Pellets
Processing Method 
  • Injection Molding
Physical
Nominal Value
Unit
Test Method
Specific Gravity
 
ASTM D792
Melt Mass-Flow Rate (MFR) (200°C/5.0 kg)
g/10 min
ASTM D1238
Mechanical
Nominal Value
Unit
Test Method
Tensile Modulus
psi
ASTM D638
Tensile Strength (Break)
psi
ASTM D638
Tensile Elongation (Break)
%
ASTM D638
Flexural Modulus
psi
ASTM D790
Impact
Nominal Value
Unit
Test Method
Notched Izod Impact (0.125 in, Injection Molded)
ft·lb/in
ASTM D256
Hardness
Nominal Value
Unit
Test Method
Rockwell Hardness (L-Scale)
 
ASTM D785
Thermal
Nominal Value
Unit
Test Method
Deflection Temperature Under Load (264 psi, Annealed)
°F
ASTM D648
Vicat Softening Temperature
°F
ASTM D1525
Features
Features may also be described by the following terms: Good Processability, Easy Processing, High Impact Resistance.
Available Documents
Processing (English)
Technical Datasheet (English)
Injection
Nominal Value
Unit
 
Drying Temperature
°F
 
Drying Time
hr
 
Suggested Max Regrind
%
 
Rear Temperature
°F
 
Front Temperature
°F
 
Mold Temperature
°F
 
Injection Pressure
psi
 
Back Pressure
psi
 
Notes
1Typical properties: these are not to be construed as specifications.
 
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The information presented on this datasheet was acquired by UL Prospector from the producer of the material. UL Prospector makes substantial efforts to assure the accuracy of this data. However, UL Prospector assumes no responsibility for the data values and strongly encourages that upon final material selection, data points are validated with the material supplier.