At One Place

PETG

Density of PETG
1,270 kg/m³ (1,250–1,290)
1.27 g/cm³ · 79.3 lb/ft³

PET with glycol added to stop it crystallizing, which leaves it amorphous, optically clear and free of any melting point — it just gets softer. It fills the gap between PLA and ABS for printing: tougher and more heat-resistant than PLA, less prone to warping and fuming than ABS. It is more flexible than acrylic and does not shatter, which is why machine guarding is PETG or polycarbonate rather than acrylic.

Properties

Density
1,270 kg/m³ (1,250–1,290) — 1.27 g/cm³
Tensile strength
45–55 MPa
Young's modulus
2.1 GPa
Thermal conductivity
0.2 W/(m·K)
Thermal expansion
60 µm/(m·K)
Floats in water
No
Magnetic
No

What it is used for

  • Machine guards and safety shields
  • 3D printing filament
  • Drinks bottles and food containers
  • Point-of-sale display panels

How it compares

Water is 1,000 kg/m³. Anything with a shorter bar than water floats in it.

air 1.2 kg/m³
expanded polystyrene foam 20 kg/m³
rigid polyurethane foam 40 kg/m³
Water — the float line 1,000 kg/m³
PETG 1,270 kg/m³
tungsten 19,250 kg/m³
gold 19,300 kg/m³
platinum 21,450 kg/m³
Water is 1,000 kg/m³. Anything below that floats.
Material Density Relative to water
rigid polyurethane foam 40 kg/m³ 0.04×
expanded polystyrene foam 20 kg/m³ 0.02×
air 1.2 kg/m³ 0.00×
PETG ← 1,270 kg/m³ 1.27×
platinum 21,450 kg/m³ 21.45×
gold 19,300 kg/m³ 19.30×
tungsten 19,250 kg/m³ 19.25×

Does it rust?

PETG contains no iron, so it cannot rust. Whether it degrades depends on the material, not on oxidation.

Is it magnetic?

PETG is not a metal and has no ferromagnetic response.

Common questions

What is the density of PETG?
1,270 kg/m³ (1,250–1,290), or 1.27 g/cm³.
Does PETG float?
No. At 1,270 kg/m³ it is denser than water.
Is PETG magnetic?
PETG is not a metal and has no ferromagnetic response.

Related pages

Sources

  1. Typical range compiled from manufacturer specifications — At One Place

How these figures are compiled and checked