Specific Gravity
Material
SPG
Material
SPG
ABS
1.01 to 1.08
Polycarbonate, unfilled
1.19 to 1.22
ABS, FR
1.21
Polycarbonate, 20% glass
1.35
Acetal
1.42
Polycarbonate, 30% glass
1.43
Acetal, 25% glass coupled
1.59
Polycarbonate, 40% glass
1.52
Acrylic
1.17 to 1.20
Polybutylene terephthalate
1.30 to 1.31
Alloy, ABS/PC
1.19
 "  ", FR
1.41 to 1.43
Alloy, ABS/PVC
1.21
 "  ", Glass reinforced
1.42 to 1.60
Alloy acrylic/PVC
1.28 to 1.35
 "  ", Mineral filled
1.36 to 1.47
Cellulose acetate butyrate
1.15 to 1.20
 "  ", Mineral glass reinforced
1.55 to 1.86
Cellulose  acetate propionate
1.19 to 1.22
Polyethylene, LD
0.91 to .092
Nylon 6, GP
1.14
Polyethylene, HD
0.94 to .096
Nylon 6, 30% glass
1.37
Polyphenylene oxide
1.08
Nylon 11
1.04
Polypropylene
0.90
Nylon 12
1.01
Polystyrene, GP
1.05
Nylon 6,6
1.13 to 1.15
Polystyrene, high impact
1.04
Nylon 6,6 reinf. glass fiber
1.37 to 1.41
Polysulfone
1.24
Nylon 6,12
1.06 to 1.08
Polyurethane
1.11 to 1.25
Phenylene oxides (Noryl)
1.06 to 1.10
PVC, plasticized
1.20
Phenylene, glass reinforced
1.21 to 1.27
PVC, unplasticized
1.37
Polyallomer
0.89 to 0.90
Silicone
1.75