ABS vs PBT (unfilled): 0% composition overlap. Significantly different materials serving different application areas.
ABS vs PBT (unfilled)
Side-by-side chemical composition and mechanical property comparison.
Overview
ABS
Acrylonitrile Butadiene Styrene — the most widely used amorphous engineering/commodity thermoplastic. Excellent balance of toughness, rigidity, and processability. Good surface finish and paintability. Not UV-stable without additives. Trade names include Novodur (INEOS Styrolution), Terluran (INEOS), Cycolac (SABIC). Used for automotive interior trim, appliance housings (vacuum cleaners, monitors), LEGO bricks, 3D printing filament, and pipe fittings.
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.
| ABS | PBT (unfilled) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 10350 | ISO 10350 |
Chemical composition (wt%) — Pro
| Element | ABS | PBT (unfilled) | Overlap |
|---|---|---|---|
| Acrylonitrile | 15–35% | — | — |
| Butadiene | 5–30% | — | — |
| Styrene | 40–60% | — | — |
| Base Polymer (Polybutylene Terephthalate) | — | 99–99.9% | — |
Mechanical properties — Pro
| Property | ABS | PBT (unfilled) | Unit |
|---|---|---|---|
| Tensile Strength | 38–50 | 50–65 | MPa |
| Yield Strength | 40–48 | 50–62 | MPa |
| Elongation | 10–30 | 50–100 | % |
| Elastic Modulus | |||
| Density | |||
| Glass Transition Temp (Tg) | |||
| Water Absorption (24h) | |||
| Tensile Strength | |||
| Tensile Modulus | |||
| Elongation at Break | |||
| Charpy Impact (notched) | |||
| Density | |||
| HDT/B (0.45 MPa) | |||
| Vicat Softening Temp | |||
| Water Absorption (24h) | |||
| Melting Point | |||
| Melting Point | |||
| HDT/A (1.8 MPa) |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
ABS 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 ABS the same as PBT (unfilled)?
ABS and PBT (unfilled) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace ABS 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 ABS and PBT (unfilled)?
The main differences are in the following elements: overall alloying content. ABS is a Polymers grade, while PBT (unfilled) is a Polymers grade.
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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.