poly(ethylene terephthalate)
polymerPoly(ethylene terephthalate), or PET, is a thermoplastic polyester synthesized from ethylene glycol and terephthalic acid, forming a semi-crystalline polymer with good strength and stiffness. It is the most widely produced polyester in the world, dominating applications where a combination of mechanical performance, chemical resistance, and thermal stability are needed alongside cost-effectiveness and recyclability. Engineers select PET for its excellent barrier properties to gases and moisture, dimensional stability, and proven long-term performance in both ambient and moderately elevated temperature environments.
beverage and food packagingtextile fibers and yarnsengineering films and sheetsinjection-molded parts and housingsautomotive interior componentselectrical insulation and laminates
Compliance & Regulations
?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Property OverviewNormalized to typical max values
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 1.876 | GPa | — | ||
Elongation at Break(εf) | 33.22 | - | — | ||
Flexural Strength (MOR)(σf) | 54.00 | MPa | — | ||
Hardness (Vickers)(HV) | 1,000 | HV | — | ||
Ultimate Tensile Strength(σUTS) | 127.5 | MPa | — | ||
Young's Modulus(E) | 6.524 | GPa | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 351.6 | K | — | ||
Melting Point / Solidus(Tm) | 522.3 | K | — | ||
Maximum Service Temperature(Tmax) | 587.8 | K | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 3.725 | eV | — |
Verified Unverified Low confidence (<80%) Link to source
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.520 | - | — |
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.