SAN Resin

SAN Resin Properties & Uses

To avoid improper resin selection, Contact PMC for additional help in determining the exact engineering resin required for your application.

Please Note: PMC does not sell the material listed below.  We only use the material list to inform visitors that we are experienced in processing  these materials for many fine products.

Chemical NameStyrene Acrylonitrile
Specific Gravity1.08
Shrinkage0.3% to 0.7%
Melting Point239° F
 Deflection Temperature183.2° F – 204.8° F
Service Temperature131° F


Styrene Acrylonitrile resin is a copolymer plastic commonly used in place of Polystyrene due to its greater thermal resistance.

SAN copolymers are produced by the polymerization reaction of styrenes and acrylonitrile. The properties are dependent on the acrylonitrile content. Commercial grades of SAN offer different acrylonitrile molecular masses.

The transparency of SAN makes it one of the few plastics that can be used in clear applications. It’s glass-like clarity makes it a preferred plastic in the housewares market.

SAN is commonly used in the following applications:

  • Dishwasher-Safe Containers
  • Disposable Lighters
  • Brush Bristles
  • Auto Gauge Covers
  • Cosmetic Cases
  • Medical Syringes
  • Reflectors
  • Refrigerator Doors
  • Battery Cases
AdvantagesSome of the advantages of SAN include:

  • Excellent Rigidity/Stiffness
  • Excellent Load-Bearing Capacity
  • Excellent Chemical Resistance
  • High Flexural Strength
  • Good Appearance
  • Good Color-Ability
  • Good Clarity
  • Good Thermal Resistance
  • Good Dimensional Stability
  • Good Heat Resistance
  • Easily Processed

Some of the disadvantages of SAN include:

  • Low Max Service Temperature
  • Hygroscopic
  • Yellowing with Age
  • Flammable with High Smoke Generation