Plastic class
|
Abbreviation
|
Density (g/cm3)a,b
|
---|
Expanded polystyrene (styrofoam)
|
EPS
|
0.01–0.04
|
Low-density polyethylene
|
LDPE
|
0.89–0.93
|
High-density polyethylene
|
HDPE
|
0.94–0.98
|
Polypropylene
|
PP
|
0.83–0.92
|
Polyethylene terephthalate
|
PET
|
0.96–1.45
|
Polyamide (nylon)
|
PA
|
1.02–1.16
|
Polystyrene
|
PS
|
1.04–1.1
|
Polymethyl methacrylate (acrylic)
|
PMMA
|
1.09–1.20
|
Polyvinylchloride
|
PVC
|
1.16–1.58
|
Polycarbonate
|
PC
|
1.20–1.22
|
Polyurethane
|
PU
|
1.2
|
Alkyd
|
–
|
1.24–2.10
|
Polyester
|
PES
|
1.24–2.3
|
Polytetrafluoroethylene
|
PTFE
|
2.1–2.3
|
-
aNote that densities of plastic items can be modified by additives and environmental processes such as weathering and fouling
-
bBased on [11, 16, 25, 109]