Stelray Plastic Products, Inc.

Reference Tables

Shrinkage Values   |   Density Values   |   Common Abbreviations

Shrinkage Values for Miscellaneous Resins
Material Shrink in/in
ABS High Impact 0.005 - 0.007
ABS Heat Resistant 0.004 - 0.005
ABS Medium Impact 0.005
Acetal 0.020 - 0.035
Acrylic General Purpose 0.002 - 0.009
Acrylic Heat Resistant 0.003 - 0.010
Acrylic High Impact 0.004 - 0.008
Ethylene Vinyl Acetate 0.010 - 0.030
Ionomer 0.003 - 0.020
Nylon 6/6 0.010 - 0.025
Nylon 6/6 0.007 - 0.015
Nylon 6/10 0.010 - 0.025
Nylon 11 0.010 - 0.025
Nylon 12 0.008 - 0.020
Nylon Glass Filled 0.005 - 0.010
Polybutylene 0.020 (molded)
Polybutylene 0.040 (aged)
Polycarbonate 0.005 - 0.007
PET (Amorphous, petg, pctg) 0.003 - 0.005
Polyster .025 - .050 THICK 0.006 - 0.012
Polyster .050 - .100 THICK 0.012 - 0.017
Polyster .100 - .180 THICK 0.016 - 0.022
Polyster PBT 0.010 - 0.020
Polyster PET 30% GF 0.001 - 0.002
Polyster PBT 30% GF 0.003 - 0.005
POLYETHERIMIDE 0.005 - 0.007
Polyethylene Low Density 0.015 - 0.035
Polyethylene High Density 0.015 - 0.030
PPO/Styrene CO (NORYL) 0.005 - 0.007
Polypropylene 0.010 - 0.030
PPO/Styrene G.P. 0.002 - 0.008
PPO/Styrene Heat Resistant 0.002 - 0.008
PPO/Styrene Impact Mod 0.003 - 0.006
Polysulfone 0.008
Polyurethane 0.010 - 0.020
PVC Rigid 0.002 - 0.004
PVC Semi-Rigid 0.005 - 0.025
PVC Flexible 0.015 - 0.030
SAN 0.002 - 0.006

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Density Values - Selected Resins
Material 70°F DENSITY
gr/cc
MELT DENSITY
gr/cc
ABS (Injection Grade) 1.05 0.97
ABS 30% GR 1.28  
Acetal 1.42 1.17
Acetal 20% GF 1.55  
Acrylic General Purpose) 1.16 1.04
Cellulose Acetate 1.26 1.13
Cellulose Butyrate 1.20 1.07
Cellulose Propionate 1.22 1.10
Ethylene Vinyl Acetate 0.95  
Ionomer 0.95 0.73
Nylon 6/6 1.14 0.97
Nylon 6 1.13 0.97
Nylon 6/10 1.08 0.97
Nylon 6/12 1.07 0.97
Nylon 11 1.04 0.97
Nylon 12 1.02 0.97
Nylon 30% GF 1.36  
Polybutylene 0.92  
Polycarb/Ester Alloy 1.20  
Polycarbonate 1.20 1.02
Polycarbonate 30% GF 1.42  
Co-Polyster PETG 1.27 1.12
Co-Polyster PCTG 1.24 1.08
Polyster PBT 1.34 1.11
Polyest PBT/PET 30% GF 1.58  
Polyster PET (Bottle) 1.40 1.20
Polytherimide 1.27  
Polyethylene Low Density 0.92 0.76
Polyethylene Medium Density 0.92-0.94 0.74
Polyethylene High Density .094-0.97 0.72
Polythyl 30% GF HDPE 1.18  
PPO/Styrene (NORYL) 1.07 0.90
PolyphenYlene Sulfide 1.35-1.80  
Polyphen Sulfide 40% GF 1.65  
Polypropylene 0.90 0.70
Polypropylene 30% GF 1.13  
POLYStyrene GP 1.05 0.97
POLYStyrene Impact Mod 1.04 0.96
Polysulfone 1.25 1.16
Polyurethane 1.20 1.13
PVC - Rigid 1.39 1.30
PVC - Pipe 1.44 1.32
PVC - Flexible 1.29 1.20
SAN 1.08 1.00
T/P Ruber (Santoprene) 1.08 1.00
T/P Elastomer (Urethane) 0.97 0.93
  0.83 0.82

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Common Abbreviations for Misc Resins
Resin Generic Name Common ABBR
Acrylonitrile-Butadiene-Styrene ABS
Cellulose Acetate CA
Cellulose Acetate Butyrate CAB
Cellulose Acetate Propionate CAP
Chlorinated Polyethylene CPE
Chlorinated Polyvinyl Chloride CPVC
Ethylene-Propylene Diene Rubber EPDM
Expandable Polystyrene EPS
Ethylene Vinyl Acetate EVA
Fiber Reinforced Plastic FRP
High Density Polyethylene HDPE
High Impact Polystyrene HIPS
Low Density Polyethylene LDPE
Linear Low Density Polyethylene LLDPE
Maleic Anhydride MA
Medium Density Polyethylene MDPE
Polyamide (Nylon) PA
Polyacrylonitrile PAN
Polybutylene PB
Polybutylene Terephalicate PBT
Polycarbonate PC
Polyethylene PE
Polyetheretherketone PEEK
Polyetherimide PEI
Polyetherketone PEK
Polyethylene Terephalicate PET
Polyethylene Terephalic Clycol PETG
Polyimide PI
Polymethyl Methacrylate PMMA
Polyoxymethylene POM
Polypropylene PP
Chlorinated Polypropylene PPC
Polyphenylene Oxide PPO
Polyphenylene Sulfide PPS
Polyphenylene Sulfone PPSU
Polystyrene PS
Polysulfone PSU
Polyurethane PU
Polyurethane PUR
Polyvinyl Chloride PVC
Reinforce Polybutylene Terephthalateic RPBT
Reinfor Polyethylene Terephalic RPET
Reaction Injection Molding RIM
Styrene Acrylonitrile SAN
Styrene Butadiene Rubber SBR
Styrene Maleic Anhydride SMA
Sheet Molding Compound SMC
Thermoplastic Elastomer TPE

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