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Polypropylene is an economical material that offers a combination of outstanding physical, mechanical, thermal, and electrical properties not found in any other thermoplastic. Noted for its excellent chemical resistance in corrosive environments, polypropylene provides excellent resistance to organic solvents, degreasing agents and electrolytic attack. It is light in weight, resistant to staining, and has a low moisture absorption rate.

Flame retardant grades of polypropylene have various UL ratings. They are more expensive and, because of the addition of the flame retardant fillers, they have lower physical properties and fabricating qualities. Flame retardant clad polypropylene has two outside skin sheets of flame retardant polypropylene that are coextruded onto a center core of polypropylene. This provides a composite material that is tough and with flame retardant exterior surfaces.

Emco’s CP7-D flame retardant polypropylene meet or exceed the most rigorous FMRC 4910 testing standards for most aspects of flame retardation, self-extinguishing characteristics and burn through. In addition, CP7-D also meets or exceeds test standards for low smoke generation and minimal toxic by-products. CP7-D is a filled PP sheet material, therefore, chemical compatibility should be verified for each application. Contact us for more information about this new material!

Brand Names

  • Flametec® CP-5
  • Proteus® V-O
  • Flametec® CP7-D

Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative with the form below.

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At a Glance

Generic Name
Polypropylene, Fire/Flame Retardan

Available In

Flametec® CP-5, Proteus® V-O, Flametec® CP7-D

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Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

Sheet 1/8″ – 2″ TH White

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


Physical PropertiesUnitsASTMResults
Density lb/in³ D792 0.035
Water Absorption, 24 hrs % D570 0.02
Mechanical PropertiesUnitsASTMResults
Tensile Strength @yield psi D638 4300
Tensile Elongation @Yield % D638 28
Flexural Modulus psi 400000 145000
IZOD Impact Strength Notched ft-lb/in D256 0.65
Thermal PropertiesUnitsASTMResults
Heat Deflection Temp at 66 psi °F D648 106
Heat Deflection Temp at 264 psi °F 57
Melting Temperature °F D3418 327
Max Operating Temp °F 180
Flammability Rating UL94 V – O
Electrical PropertiesUnitsASTMResults
Dielectric Strength 1/8″ th. V/mil D149 500 – 650
Dielectric Constant D150 2.3
Volume Resistivity, 50% RH ohm-cm D257 10¹⁵

NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted


  • Laboratory workstations
  • Liners and covers
  • Fume hoods and ducts
  • Structural tanks for chemicals
  • Industrial battery cases
  • Dust extraction ducting


  • Resists most acids, alkalis and solvents
  • No moisture absorption
  • USDA and FDA approved for use in food processing industries
  • Formable, machineable, and weldable
  • Impact and abrasion resistant
  • Stress crack resistant
  • Excellent insulating properties
  • Excellent dielectric properties
  • Low ignitability, spread of flame
  • Low heat and smoke emission
  • can be used in wet bench and wafer tool fabrication


  • Copolymer
  • Homopolymer
  • Flame/Fire Retardant

NOTE: Several grades of this material are available. For additional information regarding this plastic, contact your Emco Industrial Plastics representative or call 973-862-4148.

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