Polypropene, is a thermoplastic polymer used in a wide variety of applications including packaging and labeling, textiles, stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes.

Polypropylene is mostly hard and flexible, particularly when copolymerized is with ethylene. Polypropylene is economical, and can be translucent when uncolored but is not as readily made transparent as polystyrene, acrylic, or certain other plastics. It is often opaque or colored using pigments. Polypropylene has great resistance to fatigue.

PP has a melting point of 171ºC (340ºF).
Unit of Measure


N/A 1/8 in3 7/40 mm


N/A Natural

Material Resin

N/A Polypropylene

Tolerance (±)

N/A 0 in

Bead Finish

N/A Polished


N/A 0.90 to 0.98 g/cm³

Max Operating Temperature

N/A 82 ºC

Tensile Strength

N/A 4800 psi

Durometer/Hardness Rating

N/A 92 to 117R

P Resistance

  • Excellent resistance to dilute and concentrated Acids, Alcohols, Bases and Mineral Oils
  • Great resistance to Aldehydes, Esters, Aliphatic Hydrocarbons, Ketones and Vegetable Oils
  • Limited resistance to Aromatic and Halogenated Hydrocarbons and Oxidizing Agents

Polypropylene Quick Facts

  • Maximum Temperature: 275ºF 135ºC
  • Minimum Temperature: 32ºF 0ºC
  • Autoclavable: Yes
  • Melting Point: 338ºF 170ºC
  • Tensile Strength: 4,500 psi
  • Hardness: R95
  • UV Resistance: Poor
  • Translucent
  • Rigid
  • Specific Gravity: 0.90

Polypropylene Fabrication

  • Great chemical resistance makes Polypropylene a popular choice for plating and chemical tanks, as well as laboratory cabinetry and semi-conductor bench tops
  • This material machines well and is available in many profiles
  • Propylene is autoclavable for usage in biohazardous environments
  • Other uses include fittings and connectors, storage containers, sinks, and hoods
  • The best combination method is hot air or nitrogen welding. Can be automatically joined with screws or rivets. Ultrasonic inserts work well

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