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Strenghts

Low cost  

Good chemical resistance against most inorganic acids, alkalis, and salts  

Good resistance to environmental stress cracking when in contact with alcohols, esters, detergents, or polar hydrocarbons  

Very good fatigue resistance  

Very low density  

Excellent dielectric properties  

More rigid than PE and retains mechanical properties at elevated temperatures  

Mechanical and electrical properties unaffected by submersion in water  

Can be FDA compliant  

Good resistance to steam sterilization  

Excellent processing characteristics  

Can be joined by hot-gas, hot-tool, induction, or friction welding

Limitations

Lower stiffness than standard PP  

Lower HDT  

Higher viscosity  

Poor resistance to UV, need to be stabilized  

Embrittles below -20°C  

Low upper service temperature, 90-120C  

Attacked by highly oxidizing acids, swell rapidly in chlorinated solvents and aromatics  

Heat-ageing stability is adversely affected by contact with metals  

Post moulding dimensional changes due to crystallinity effects  

Limited impact resistance  

Low scratch resistance  

Poor paint adhesion  

(...)

Dimensional stability

Coefficient of linear thermal expansion 7 - 17 10^-5 °C-1  

H2O absorption 24 hours 0.01 - 0.1 %  

Shrinkage 2 - 3 %  

Electrical performances

Arc resistance 135 - 180 sec  

Dielectric constant 2.3  

Dielectric rigidity 20 - 28 kv/mm  

Dissipation factor 3 - 5 10^-4  

Volume resistivity 16 - 18 10^X Ohm.cm  

Fire performances

Fire resistance (LOI) 17 - 18 %  

Flammability UL94 HB  

Mechanical properties

Elongation at break 200 - 700 %  

Flexibility (Flexural Modulus) 0.4 - 1 GPa  

Hardness Rockwell M 1  

Hardness Shore D 45 - 55  

Stiffness (Flexural Modulus) 0.4 - 1 GPa  

Strength at break (tensile) 23 - 35 MPa  

Strength at yield (tensile) 11 - 28 MPa  

Toughness (Notched Izod impact at room temperature) 110 - 999 J/m  

Toughness at low T (Notched Izod impact at low temperature) 25 - 135 J/m  

Young modulus 0.4 - 1 GPa  

Physical properties  

Density 0.88 - 0.91 g/cm^3  

Glass transition temperature -20 °C  

Radiation resistance

Gamma radiation resistance Poor  

UV light resistance Poor  

Service temperature

Ductile/fragile temperature -40 - -20 °C  

HDT @0.46 Mpa (67 psi) 75 - 88 °C  

HDT @1.8 Mpa (261 psi) 46 - 57 °C  

Max continuous Service temperature 90 - 115 °C  

Min continuous service temperature -40 - -20 °C  

Others

Sterilization resistance (Repeated) Poor  

Thermal insulation (Thermal conductivity) 0.15 - 0.21 W/m.K