Is allPHA resistant to high temperatures? 08 June 2022 10:13 Updated Yes! allPHA has a softening temperature (HDT) of 153 °C. Above this temperature, printed parts may lose their shape. Related articles Will my PHA print break down in my house? What is the size of the spools? What other print settings are key to printing allPHA? Is allPHA UV resistant? Sustainable material: PHA - 100% biobased and 100% biodegradable