Materials

SAN (Styrene Acrylonitrile)

SAN is ABS without the butadiene. It does not have the impact strength of ABS, but can be crystal clear. Styrene Acrylonitrile has better general chemical resistance than polystyrene and is cheaper than acrylic. It has a good combination of rigidity, strength, toughness, and transparency.

LNP LubricompThermocompLGLustranLuran

Typical Properties

Tensile Strength10,000-18,000 psi
Flexural Modulus500,000-1,200,000 psi
Impact Strength.3-3.0 ft-lb/in notched izod
Max Temperature140°-200° F
Chemical ResistancePoor to Fair

Applications

  • Battery cases
  • Dials
  • Knobs
  • Switches
  • Lenses
  • Trays
  • Containers
  • Covers
  • Autoclavable devices
  • Dental and medical light diffusers

Advantages

  • + Heat resistant
  • + High clarity
  • + High flow and rigidity
  • + Dimensionally stable

Disadvantages

  • − Low impact strength
  • − High processing temps
  • − Flammable — smoke generation
  • − Yellows quicker than other PS
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