FDM Polymers Technical Reference

FDM Polymers

A Technical Reference

Polymer chemistry, mechanical and thermal envelopes, calibration guidance, post-processing limits, and brand surveys for the polymer families that dominate engineering-grade FFF/FDM additive manufacturing.

• Author: hyiger
• Compiled: May 2026
• Hardware envelope: Prosumer FFF: nozzle to ~350 °C, bed to ~120 °C, chamber to ~65 °C, hardened nozzle (abrasive-rated)
• Scope: Polyesters, polyolefins, polyamides, polycarbonate blends, styrenics, elastomers, high-performance specialty polymers
• Reading level: Engineering practitioner; assumes FDM basics
• License: CC BY-NC-ND 4.0 - free, non-commercial use; see Appendix E

Contents

• Part I — Foundations
  • 1. Scope, methodology, and data caveats
  • 2. FDM polymer taxonomy and the labeling problem
  • 3. Process physics common to all FDM polymers
  • 4. Hardware requirement tiers
  • 5. Safety, emissions, and sustainability
• Part II — PLA Family
  • 6. PLA family
• Part III — Polyester Family
  • 7. PETG and the copolyester family
  • 8. PCTG — deep dive
  • 9. PET and reinforced PET grades
• Part IV — Styrenics Family
  • 10. Styrenics: ABS, ASA, HIPS
• Part V — Polyolefins
  • 11. Polypropylene (PP) — deep dive
  • 12. Polyethylene (PE) and other polyolefins
• Part VI — Polyamides
  • 13. Aliphatic nylons (PA6, PA66, PA12, PA612, PA11)
  • 14. PPA / semi-aromatic polyamides — deep dive
• Part VII — Polycarbonates
  • 15. PC and PC blends — deep dive
• Part VIII — Specialty and high-performance
  • 16. TPU, TPEE, PEBA, and foaming elastomers
  • 17. PMMA, POM, PVDF
  • 18. PPS, PSU, PPSU, PEI
  • 19. PAEK family (PEEK, PEKK)
  • 20. Soluble support polymers (PVA, BVOH, proprietary)
  • 21. Niche biodegradables (PHA, PCL, PVB)
• Part IX — Cross-cutting workflows
  • 22. Material selection decision framework
  • 23. Calibration workflow (unified)
  • 24. Bed adhesion strategy by polymer family
  • 25. Multi-material and dual-hotend printing
  • 26. Post-processing strategies
  • 27. Cost and procurement landscape
  • 28. Tribological filaments
• Appendices

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Preface

This volume is a single technical reference on the polymers used in engineering-grade FFF/FDM 3D printing, covering the commodity, engineering, and high-performance families a practitioner is likely to encounter. It uses one numbering scheme, one terminology set, and one bibliography throughout. Material common across polymer families - process physics, hardware tiers, and emissions safety - is consolidated into Part I (Foundations) and Part IX (Cross-cutting workflows) so it is stated once rather than repeated. The polymer-family-specific content is organized into Parts II-VIII, with each chapter following the same outline (chemistry → property envelope → brand landscape → print process → application fit → post-processing) where the underlying material supports it.

The polymer-family ordering follows the rough commodity-to-specialty axis that practitioners actually traverse: commodity polymers (PLA, PETG, PCTG) and styrenics (ABS, ASA, HIPS) first, then engineering polyolefins (PP), polyamides (aliphatic nylons and PPA), and polycarbonate blends, then the high-performance specialty tier (PPS, PSU/PPSU/PEI, PAEK), and finally the elastomer, support, and biodegradable niches. This is not a ranking by performance — it is a ranking by how a typical engineering build progresses from prototyping to functional service.

Three editorial principles apply throughout. First, data values are from manufacturer technical datasheets unless explicitly labeled otherwise; printed-specimen values are preferred to resin-pellet values where vendors disclose both, and resin-grade data points are flagged when used. Second, vendor marketing claims (especially around heat-resistance ceilings, food-contact compliance, and emissions) are reported as such and qualified where the empirical case is weak. Third, the author's own bench-measured calibration values for specific filament + nozzle combinations are included in Appendix B as worked examples on a representative prosumer setup — these are marked as measured rather than vendor-supplied and should be treated as starting points rather than universal values.

What this document is not: it is not a tutorial for FFF/FDM beginners, not a comprehensive print-failure troubleshooting guide, not a recommendation engine for specific projects, and not a substitute for per-spool calibration on the actual machine. Calibration values cited are starting points. Brand surveys reflect public TDS availability as of early 2026 and will go stale; the polymer-chemistry foundations and process-physics principles will not.

Two polymer families that are technically in scope receive less coverage than they merit. PPS (polyphenylene sulfide), available in CF-filled grades from Bambu, Polymaker Fiberon, and Flashforge, is summarized at the family level in Chapter 18 but does not have a dedicated brand survey. The PAEK family (PEEK, PEKK, PEKK-CF) is similarly summarized in Chapter 19. Both receive family-level coverage here rather than a dedicated brand survey.

Finally, three datasets and tools that inform this volume are referenced but not reproduced: a substantial body of independent third-party filament testing covering tensile, layer-adhesion, and thermal measurements; the author's published statistical analysis of community troubleshooting threads (~910 threads, 15-category classifier); and the author's calibration methodology published on Printables. These appear in Appendix D references where individual data points are drawn from them.

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Part I — Foundations ›