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Testing the Melting Point of Nylon 3D Prints (VIDEO)


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So what does 80C mean in the paragraph "This material is dishwasher safe, not watertight, not recyclable, and not foodsafe. It is heatproof to 80C/176F degrees. Higher temperatures may significantly change material properties."? No change at all below 80C?
#1 stannum on 2013-11-20 19:15 (Reply)
Much like steel, nylon starts to lose its strength well before it melts. 80°C is probably the point at which it first starts to soften. Depending on the geometry, parts may start to suffer permanent deformation when subjected to higher temperatures.
#1.1 Anonymous on 2013-11-20 19:51 (Reply)
Yes, the questions is if that is what happens, or a typo. Because the spec mentions Melting point 172-180C, Vicat softening temperature B/50 163C and A/50 181C. So the 80C seems to come from nowhere specific (and looks too much like 180 with a missing 1).

Alumide paragrah says "This material is not watertight, not dishwasher safe, not recyclable, and not foodsafe. It is heatproof to 172/342ºF degrees. Higher temperatures may significantly change material properties." and the spec numbers are Melting 172-180C, no A/50 provided, B/50 169C. The aluminum only gave it 6C more for the test under load. And it clearly has a typo, 172 what? And the deformation happens below it, as the B/50 points, so not so heatproof to 172C.
#1.1.1 stannum on 2013-11-21 04:05 (Reply)
I don't think the 80C value is completely arbitrary. I tested undyed WSF. That is, I was testing the nylon ONLY. The dye can start to bleed at high temperatures and 80C seems like a reasonable cutoff. If you boil (100C) dyed WSF a lot of dye will leak into the water.

If you're working with undyed WSF you should be fine up to at least 140C
#2 Brandon Enright (Homepage) on 2013-11-21 22:04 (Reply)
OK, colorproof to 80C makes sense. Shape stable to higher temperatures, as official data mentions. The pages could still get improved to fix the typos and mention the differences.
#2.1 stannum on 2013-11-26 18:47 (Reply)
Does the aluminum powder affect the alumide resistance to radiant heat? I was thinking it was higher than plain WSF because aluminum reflects the radiant energy. Maybe the alumide is just stiffer at higher temperatures because of the non-melting powder.

Thanks.
#3 Jay Gross (Homepage) on 2013-11-30 16:04 (Reply)
Alumide does have a deflective heat resistance,

Melting point EN ISO 11357-1 172 – 180 °C
Heat deflection temperature
ASTM D648 (0.45 MPa) 177 °C / 351 °F
Vicat softening temperature
B/50 EN ISO 306 169 °C
ASTM D1525 336 °F
Heat conductivity (170 ° C) Hot wire method 0.5 – 0.8 W(mK)-1
#3.1 Anonymous on 2013-12-02 20:08 (Reply)

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