LCP (Liquid Crystal Polymer) vs PET (Polyester): 0% composition overlap. Significantly different materials serving different application areas.
LCP (Liquid Crystal Polymer) vs PET (Polyester)
Side-by-side chemical composition and mechanical property comparison.
Overview
LCP (Liquid Crystal Polymer)
Liquid Crystal Polymer — self-reinforcing aromatic polyester with outstanding flow into thin walls (<0.2mm). Extremely low moisture absorption (0.02%), minimal warpage, excellent dimensional stability. Near-zero creep. Inherently flame-retardant (V-0 at 0.2mm). Very high HDT (>270°C). Trade names: Vectra (Celanese), Zenite (DuPont), Siveras (Toray). THE micro-connector and SMT-reflow-compatible polymer. Used for SMD connectors, fiber optic ferrules, chip carriers, sensors, and ultra-thin-wall electronic housings.
PET (Polyester)
Polyethylene Terephthalate (semi-crystalline stock shape) — combines the stiffness of POM with the wear resistance of PA, without centerline porosity or moisture sensitivity. Excellent dimensional stability, low friction, very low water absorption (~0.1%). Better creep resistance than POM or PA. Widely known from bottles/packaging, but engineering PET-P is semi-crystalline and much stiffer. Trade names include Ertalyte (MCAM), Arnite (DSM), Rynite (DuPont, GF grades). Used for precision bearings in water, gears, slide elements, pump parts, and electrical insulators.
| LCP (Liquid Crystal Polymer) | PET (Polyester) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 527-1 | ISO 10350 |
Chemical composition (wt%) — Pro
| Element | LCP (Liquid Crystal Polymer) | PET (Polyester) | Overlap |
|---|---|---|---|
| Base Polymer (Thermotropic Liquid Crystal Polymer) | 99–99.9% | — | — |
| Base Polymer (Polyethylene Terephthalate) | — | 99–99.9% | — |
Mechanical properties — Pro
| Property | LCP (Liquid Crystal Polymer) | PET (Polyester) | Unit |
|---|---|---|---|
| Tensile Strength | 130–190 | 55–80 | MPa |
| Elongation | 2–4 | 30–80 | % |
| Elastic Modulus | 9000–17000 | 2.5–3 | MPa |
| Density | |||
| hdt_1.8mpa | |||
| Yield Strength | |||
| Glass Transition Temp (Tg) | |||
| Melting Point | |||
| Water Absorption (24h) |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
LCP (Liquid Crystal Polymer) and PET (Polyester) have significantly different compositions (0% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is LCP (Liquid Crystal Polymer) the same as PET (Polyester)?
LCP (Liquid Crystal Polymer) and PET (Polyester) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace LCP (Liquid Crystal Polymer) with PET (Polyester)?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between LCP (Liquid Crystal Polymer) and PET (Polyester)?
The main differences are in the following elements: overall alloying content. LCP (Liquid Crystal Polymer) is a Polymers grade, while PET (Polyester) is a Polymers grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.