PHA

Beginner

Polyhydroxyalkanoate

A fully biodegradable, bio-based polymer produced by bacterial fermentation of organic feedstocks. PHA decomposes in soil, compost, and marine environments — unlike PLA, which requires industrial composting. It prints similarly to PLA with slightly better flexibility and is the most environmentally friendly filament available for desktop 3D printing.

Nozzle Temp175–200°C
Bed Temp40–60°C
Print Speed25–45 mm/s

Printing Tips

  • Print at the lower end of the temperature range (175-185°C) to avoid thermal degradation — PHA is sensitive to overheating.
  • Use moderate cooling (50-70% fan) to maintain surface quality without making layers too brittle.
  • PHA blends with PLA are more common and easier to print than pure PHA — check the blend ratio on the label.
  • Store in a dry box; PHA is hygroscopic and moisture causes stringing, bubbling, and reduced biodegradability.
  • Parts printed in PHA will biodegrade over months if buried in active compost — do not use for permanent outdoor applications.
  • Reduce retraction distance to 2-3 mm to prevent stringing while avoiding filament grinding in the extruder.

Use Cases

Biodegradable packaging prototypesEco-friendly consumer product prototypesMarine-degradable research equipment tagsCompostable gardening tools and plant markersEducational models for sustainability demonstrationsDisposable event signage and displaysAgricultural seed coating molds

Compatible Printers

Find PHA slicer settings for your printer — browse all printers and select PHA from the filament selector.

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Buy Online

ColorFabb PHA/PLA Blend 1.75mm→MCPP 3DP PHA Filament→Terrafilum PHA 1.75mm→

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Other Filaments

PLA

190-220°C / 50-60°C

PLA+

200-230°C / 50-70°C

PETG

230-250°C / 80-90°C

ABS

230-260°C / 95-110°C

ASA

240-260°C / 90-110°C

TPU

210-240°C / 40-60°C

Nylon (PA6)

240-280°C / 70-90°C

PC

260-310°C / 100-120°C

HIPS

230-245°C / 90-110°C

PVA

185-215°C / 50-60°C

Wood-fill PLA

180-220°C / 40-60°C

Metal-fill PLA

195-220°C / 50-60°C

Carbon Fiber PETG

230-260°C / 70-85°C

Resin

Resin (UV cure)

Flexible (TPE/TPC)

200-230°C / 30-50°C

Silk PLA

215-230°C / 60-70°C

Matte PLA

195-225°C / 50-65°C

High Speed PLA

190-230°C / 45-60°C

Recycled PLA

190-220°C / 50-60°C

PLA Marble

195-220°C / 50-60°C

Rainbow PLA

195-225°C / 50-60°C

Glow-in-the-dark PLA

195-225°C / 50-60°C

Copper-fill PLA

195-220°C / 50-60°C

Bronze-fill PLA

195-220°C / 50-60°C

Conductive PLA

200-230°C / 50-60°C

Recycled PETG

225-250°C / 75-90°C

Glass-fiber PETG

235-260°C / 80-95°C

CPE

240-270°C / 75-90°C

PC-ABS

250-280°C / 100-115°C

PA6

240-270°C / 80-100°C

PA6-CF

255-280°C / 85-100°C

PA12-CF

260-280°C / 80-100°C

PAHT-CF

280-310°C / 100-120°C

ABS-CF

240-260°C / 90-110°C

Kevlar Nylon

245-275°C / 85-100°C

TPU 95A

210-235°C / 40-60°C

TPU 87A

210-235°C / 40-60°C

TPE

200-230°C / 30-50°C

TPC

210-240°C / 40-60°C

POM

200-220°C / 100-130°C

PP

220-250°C / 85-100°C

PEEK

370-420°C / 130-160°C

PEI / ULTEM

350-400°C / 130-160°C

BVOH

190-220°C / 50-60°C

Breakaway Support

210-240°C / 50-70°C

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