STYRON™ 438 Datasheet

High Impact Polystyrene Resin

Supplied by Trinseo

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Product Description
STYRON™ 438 is a high-impact polystyrene resin with good flow, excellent stiffness, high heat and impact resistance. It is designed for injection molding applications.

Main Characteristics:
  • High heat
  • Good balance of toughness and stiffness

Complies with:
  • U.S. FDA 21 CFR 177.1640
  • Consult the regulations for complete details.

Applications:
  • Printers
  • Food containers
  • Household goods
General  
Material Status 
  • Commercial: Active
Availability 
  • Asia Pacific
Features 
  • Food Contact Acceptable
  • Good Flow
  • Good Stiffness
  • Good Toughness
  • High Heat Resistance
  • High Impact Resistance
Uses 
  • Business Equipment
  • Containers
  • Household Goods
Agency Ratings 
Forms 
  • Pellets
Processing Method 
  • Injection Molding
Physical
Nominal Value
Unit
Test Method
Density / 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 Strength
    ASTM D638
Yield, Injection Molded
psi
 
Break, Injection Molded
psi
 
Tensile Elongation (Break, Injection Molded)
%
ASTM D638
Flexural Modulus (Injection Molded)
psi
ASTM D790
Flexural Strength (Injection Molded)
psi
ASTM D790
Impact
Nominal Value
Unit
Test Method
Notched Izod Impact (73°F)
ft·lb/in
ASTM D256
Thermal
Nominal Value
Unit
Test Method
Deflection Temperature Under Load
    ASTM D648
264 psi, Unannealed
°F
 
264 psi, Annealed
°F
 
Vicat Softening Temperature
°F
ASTM D1525
Flammability
Nominal Value
Unit
Test Method
Flame Rating 2 (0.06 in)
 
UL 94
Related Terminology
This supplier and product may also be known by these terms: Styron LLC
Features
Features may also be described by the following terms: Good Toughness, Tough, Good Stiffness, Good Flow, High Impact Resistance, High Heat Resistance, Heat Resistant.
Uses
Uses may also be described by the following terms: Business Equipment, Business Machines, Household Goods, Housewares.
Agency Ratings
This plastic material has 1 certifications from the following agencies (the number in parentheses shows the number of certifications for that agency): FDA (1).
Available Documents
Technical Datasheet
Notes
1Typical properties: these are not to be construed as specifications.
2This rating not intended to reflect hazards presented by this or any other material under actual fire conditions.
 
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