LCP (Liquid Crystal Polymer) vs PBT (unfilled): 0% composition overlap. Significantly different materials serving different application areas.
LCP (Liquid Crystal Polymer) vs PBT (unfilled)
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.
PBT (unfilled)
Polybutylene Terephthalate — semi-crystalline polyester with fast crystallization (short cycle times), very low moisture absorption (0.15%), excellent dimensional stability, and good electrical properties. Key advantage over PA: properties nearly independent of humidity. Trade names include Ultradur (BASF), Celanex/Crastin (Celanese/DuPont), Valox (SABIC), Arnite T (DSM). Used for electrical connectors, relay housings, automotive sensors, and any precision part in humid environments.
| LCP (Liquid Crystal Polymer) | PBT (unfilled) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 527-1 | ISO 10350 |
Mechanical properties
| Property | LCP (Liquid Crystal Polymer) | PBT (unfilled) | Unit |
|---|---|---|---|
| tensile_strength | 130–190 | 50–65 | MPa |
| elongation | 2–4 | 50–100 | % |
| e_modulus | 9000–17000 | 2.3–2.8 | MPa |
Compatibility Assessment
LCP (Liquid Crystal Polymer) and PBT (unfilled) 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 PBT (unfilled)?
LCP (Liquid Crystal Polymer) and PBT (unfilled) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace LCP (Liquid Crystal Polymer) with PBT (unfilled)?
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 PBT (unfilled)?
The main differences are in the following elements: overall alloying content. LCP (Liquid Crystal Polymer) is a Polymers grade, while PBT (unfilled) 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.