PP – Polypropylene


Apart from being more rigid, the PP homopolymer is similar to high-density polyethylene in structural and other properties. In comparison with high-density polyethylene, it is more resistant to high temperatures but less resistant to low ones. PP is extremely resistant to chemicals and corrosion. We deliver PP as plastic sheets, hollow rods and rods.

Physical properties
  Value Unit Test method
Specific gravity 0.915 g/cm3 DIN EN ISO 1183
Average molecular mass N/A
Water absorption, 24/96 h (23 °C) N/A
Weather-resistance poor
Combustibility B2 UL 94 DIN EN ISO 527-2
Food safety yes
Mechanical properties
  Value Unit Test method
Modulus of elasticity N/A
Tensile strength 33 MPa DIN EN ISO 527-2
Elongation at break 8 % DIN EN ISO 527-2
Tensile strength at break N/A
Flexural modulus 1700 MPa DIN EN ISO 178
Flexural strength N/A
Compressive modulus N/A
Compressive strength, 1%/2% N/A
Impact strength (Charpy) does not break kJ/m2 DIN EN ISO 179-1eU
Notch impact strength (Charpy) 9 kJ/m2 DIN EN ISO 179-1eA
Notch impact strength (Izod) kJ/m2 DIN EN ISO 180/2A
Toughness (ball pressure) 70 MPa ISO 2039-1
Toughness (Shore D) 72 Sh D DIN EN ISO 868
Wear-resistance N/A
Coefficient of friction (against steel) N/A
Thermal properties
  Value Unit Test method
Glass-transition temperature N/A
Melting point N/A
Operating temperature (instantaneous) N/A
Operating temperature (continuous) 100 °C
Operating temperature (minimum) °C
Thermal expansion coefficient, 23–60 °C N/A
Thermal expansion coefficient, 23–100 °C 16 10-5 K-1 DIN EN ISO 11359-1;2
Specific heat capacity N/A
Thermal conductivity N/A
Electrical properties
  Value Unit Test method
Surface resistivity 1014 DIN IEC 60093
Resistivity N/A
Dielectric strength 52 kV/mm DIN EN 60243-1
CTI value N/A
Optical properties
  Value Unit Test method
Light transmittance N/A
Refractive index N/A
Optical errors N/A
Abrasion-resistance, 100 rotations with 500 g N/A

Additional downloads

Delivery selection plastic sheets, plastic tubes, plastic rods
Specific gravity 0.915 g/cm3
Service temperature 0 … 100 °C
Price category € (€3–7/kg)

Special properties

  • industrial plastic with the lowest specific gravity
  • good resistance to high temperatures
  • weldability
  • extremely high resistance to chemicals


chemical industry, chemical containers, laboratory structures and equipment, energy industry

Standard colours


Premade pieces


Commonly known brands

CENTROLEN/PP-H, ORBILAN PP-H, PP-DWU Alphaplus®, Polystone® P homopolymer

Further information

PP-H is also available with a fibreglass coating on one side, which makes the material suitable for use as a lining for containers. Medical-grade material is available too.