2025.12.25

Common Plastic Materials Properties Chart: Specific Gravity & Mold Shrinkage

Compare key properties of common injection molding plastics, including ABS, PC, Nylon (PA), and PP. Our comprehensive chart provides essential technical data on specific gravity and mold shrinkage rates to help you select the right material for your manufacturing needs.
Abbr.Material Type說明Specific GravityGlass fiberMold Shrinkage
PSPolystyrene (normal)聚苯乙烯(一般級)1.05--
HIPSPolystyrene (impact proof)聚苯乙烯(耐衝擊級)1.05--
ASacrylonitrile-styrene copolymer苯乙烯-丙烯睛共聚物1.081.4-
ABSacrylonitrile butadiene styrene resin苯乙烯-丙烯睛-丁二烯1.06-0.6
PMMAAcrylic resin壓克力樹脂1.18-0.6
CAcellulose acetate醋酸纖維素1.3--
PA-66Nylon 66 Polyamide resin尼龍66聚醯胺樹脂1.141.41.5
PA-6Nylon 6 Polyamide resin尼龍6聚醯胺樹脂1.141.41.2
PBTThermoplastic polyester熱塑性聚酯1.411.5-
PETpolyester resin聚酯樹脂1.351.50.4
PPOPolyphenylene oxide聚苯撐氧1.061.3-
PCPolycarbonate聚碳酸酯1.21.30.6
PBPolybutene聚丁烯0.9151.41.4
LDPELow-density polyethylene低密度聚乙烯0.92--
HDPEHigh Density Polyethylene高密度聚乙烯0.96--
PPpolypropylene (monomer)聚丙烯(單聚物)0.9051.3-
PVCsPolyvinyl chloride (soft)聚氯乙烯(軟質)1.21.6-
PVCrPolyvinyl chloride (hard)聚氯乙烯(硬質)1.391.8-
POMPolyoxymethylene聚縮醛 (塑膠鋼)1.411.6-
PUPolyurethane聚尿酯樹脂1.17--
AbbreviationMaterial NameGF ContentDensity (g/cm³)
PSPolystyrene1.050
HI-PSHigh Impact Polystyrene1.050
SANStyrene Acrylonitrile1.080
ABSAcrylonitrile Butadiene Styrene1.04-1.06
ASAAcrylonitrile Styrene Acrylate1.070
LDPELow-Density Polyethylene0.91-0.93
HDPEHigh-Density Polyethylene0.950
PPPolypropylene0.915
PP+GFPolypropylene + Glass Fiber30%1.150
PVC-softSoft PVC / Plasticized PVC1.380
PVC-rigidRigid PVC / uPVC1.380
PVDFPolyvinylidene Fluoride1.780
PMMAPolymethyl Methacrylate (Acrylic)1.180
POMPolyoxymethylene (Acetal)1.420
PPOPolyphenylene Oxide1.060
PPO-GFPPO + Glass Fiber30%1.270
CACellulose Acetate1.27-1.3
PCPolycarbonate1.200
PC+GFPolycarbonate + Glass Fiber10–30%1.420
PBTPolybutylene Terephthalate1.300
PBT+GFPBT + Glass Fiber30–50%1.52-1.57
PA6Polyamide 6 (Nylon 6)1.140
PA6+GFPA6 + Glass Fiber30–50%1.36-1.65
PA66Polyamide 66 (Nylon 66)1.15
PA66+GFPA66 + Glass Fiber30–50%1.2-1.65
PA11Polyamide 111.03-1.05
PA12Polyamide 121.01-1.04
PPSPolyphenylene Sulfide40%1.640
PETPolyethylene Terephthalate (PET)1.34
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