PP

polymer

Polypropylene (PP) is a semicrystalline thermoplastic polymer offering a balance of stiffness, chemical resistance, and processability at moderate cost. It is widely used across consumer, automotive, and industrial sectors where lightweight construction, chemical durability, and design flexibility are valued—including automotive interior trim, food packaging, appliance housings, medical device components, and engineered piping systems. Engineers select PP for applications requiring good fatigue resistance, low moisture absorption, and ease of injection molding or thermoforming, though thermal and stiffness limitations constrain use above moderate service temperatures compared to engineering plastics like nylon or PPS.

automotive interior componentsfood packaging and containersappliance housings and trimmedical device housingschemical/industrial pipinginjection-molded structural parts

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
Property OverviewNormalized to typical max values
PropertyValueUnitConditionsSource
Compressive Strength(σc)
4.932
ksi—
Elongation at Break(εf)
136
-—
Flexural Strength (MOR)(σf)
6.461
ksi—
Hardness (Vickers)(HV)
100.4
HV—
Ultimate Tensile Strength(σUTS)
4.577
ksi—
Young's Modulus(E)
197.4
ksi—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
42.03
°F—
Melting Point / Solidus(Tm)
325.8
°F—
Maximum Service Temperature(Tmax)
744.4
°F—
Thermal Conductivity(k)
0.1911
BTU/(hr·ft·°F)—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Band Gap(Eg)
2.323
eV—
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Refractive Index(n)
1.491
-—
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.