Polymer Shrinkage
Material
Density g/cm3
Molding Shrinkage (%)
LDPE
LLDPE
EVA
HDPE
HDPE (30%GF)
0.92-0.93
0.92-0.94
0.92-0.94
0.95-0.97
1.18-1.28
1.5-5.0%
2.0-2.2%
0.7-3.5%
1.5-4.0%
0.2-0.6%
PP (homopolymer)
PP (copolymer)
PP (10~40% Talc)
PP (10~40% CaCO3)
PP (10~40% Mica)
PP (10~30% GF)
PP (40% GF)
0.90-0.92
0.89-0.91
0.97-1.27
0.97-1.25
0.99-1.33
0.97-1.14
1.22-1.23
1.0-2.5%
1.0-2.5%
0.8-2.2%
0.7-1.8%
0.5-1.5%
0.2-0.8%
0.3-0.5%
PS
PS (20%GF)
PS (30%GF)
1.04-1.05
1.2
1.29
0.4-0.8%
0.1-0.3%
0.1-0.2%
HIPS
1.03-1.06
0.4-0.7%
SAN
SAN (20%GF)
1.06-1.08
1.22-1.40
0.3-0.5%
0.1-0.3%
ABS
ABS (20%GF)
ABS (30%GF)
1.04-1.08
1.18-1.22
1.29
0.4-0.9%
0.1-0.2%
0.2-0.3%
PMMA
1.17-1.20
MD 0.1-0.4% / TD 0.2-0.8%
PMMA
1.15
0.3-0.8%
1.52
1.46
1.56
1.65-1.67
1.7
1.79
1.43
1.35
1.64
0.43%
0.51-0.57%
0.42-0.49%
0.35-0.47%
0.21%
0.40%
0.15%
0.23%
0.44%
1.27
1.35
1.43
1.52
MD 0.3-0.5% / TD 0.4-0.6%
MD 0.1-0.3% / TD 0.3-0.5%
MD 0.5-0.25% / TD 0.25-0.45%
MD 0.05-0.25% / TD 0.2-0.4%
MXD6 (20%GF)
MXD6 (30%GF)
MXD6 (40%GF)
MXD6 (50%GF)
MXD6 (55%GF)
MXD6 (60%GF)
MXD6 (20%CF)
MXD6 (30%CF)
MXD6 (20%MR)
PC (10%GF)
PC (20%GF)
PC (30%GF)
PC (40%GF)
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Student Materials
Polymer Shrinkage
PC (50%GF)
PC (10%CF)
PC (20%CF)
PC (30%CF)
PC (10%GF 10%CF)
PC (10%GF 20%CF)
PC (10%PTFE)
PC (30%PTFE)
1.24
1.28
1.31
1.31
1.35
1.28
1.39
MD 0.1-0.3% / TD 0.3-0.5%
MD 0.05-0.2% / TD 0.2-0.4%
MD 0.01-0.15% / TD 0.2-0.4%
MD 0.1-0.3% / TD 0.2-0.4%
MD 0.02-0.15% / TD 0.15-0.35%
0.70%
0.90%
PC/ABS
PC/ABS
PC/ABS
PC/ABS (10%GF)
PC/ABS (20%GF)
PC/ABS (30%GF)
PC/PET
PC/PBT
1.25
1.13
1.12
1.28
1.34
1.44
1.2-1.26
1.3
0.5-0.7%
0.4-0.6%
0.3-0.5%
MD 0.2-0.4% / TD 0.3-0.5%
MD 0.1-0.3% / TD 0.2-0.4%
MD 0.05-0.25% / TD 0.2-0.4%
0.5-1.9%
0.5-0.7%
PA6
PA6 (10%GF)
PA6 (15%GF)
PA6 (20%GF)
PA6 (30%GF)
PA6 (33%GF)
PA6 (35%GF)
PA6 (40%GF)
Toughed PA6
1.13-1.16
1.2
1.23
1.27
1.36
1.39
1.41
1.49
1.02-1.07
MD 1.0-1.8% / TD 1.3-2.2%
MD 0.4% / TD 1.3%
MD 0.4% / TD 1.3%
MD 0.3% / TD 1.2%
MD 0.3% / TD 1.0%
MD 0.3% / TD 1.0%
MD 0.3% / TD 1.0%
MD 0.2% / TD 0.8%
MD 1.5% / TD 2.2%
PA66
PA66 (15%GF)
PA66 (30~33%GF)
PA66 (50%GF)
PA66 (30%CF)
PA66 (40%CF)
PA66 (30%PTFE)
PA66 (10%PTFE)
1.13-1.15
1.21-1.23
1.25-1.40
1.56
1.3-1.31
1.36-1.38
1.2
1.34
0.7-1.8%
0.5-0.98%
0.2-0.6%
0.2-0.7%
0.30%
0.20%
1.00%
0.70%
PA46
PA46 (15%GF)
PA46 (30%GF)
PA46 (50%GF)
1.18
1.3
1.41
1.62
1.8-2.0%
0.5-0.9%
0.4-0.6%
0.2-0.4%
PPA (33%GF)
PPA (45%GF)
PPA (30%MD)
PPA (45%MD)
PPA (65%MD)
1.48
1.59
1.45
1.53
1.9
MD 0.2-0.4% / TD 0.4-0.8%
MD 0.2% / TD 0.6%
MD 1.1% / TD 1.1%
MD 1.0% / TD 1.0%
MD 0.3% / TD 0.5%
©Kruse Training, Inc.
Student Materials
Polymer Shrinkage
PA11
PA12
1.03-1.05
1.01-1.02
1.20%
0.3-1.5%
PA610
PA612
PA612 (30%GF)
PA612 (10%PTFE)
1.08-1.1
1.06-1.1
1.30-1.38
1.13
0.5-1.5%
1.10%
0.2-0.5%
1.20%
1.17
1.26
1.43
1.56
1.5-2.0%
0.5-0.7%
0.2-0.5%
0.2-0.3%
POM (homopolymer)
POM (copolymer)
POM (10%GB)
POM (25%GB)
POM (10%GF)
POM (25%GF)
POM (10%MF)
POM (20%MF)
POM (20%CF)
POM (10%PTFE)
POM (20%PTFE)
IM POM
1.42
1.4
1.47
1.58
1.46
1.59
1.49
1.55-1.59
1.46
1.46
1.51
1.29-1.35
1.8-2.5%
2.0-2.2%
MD 1.9% / TD 1.6%
MD 1.8% / TD 1.5%
1.10%
MD 0.4% / TD 1.2%
1.70%
0.90%
0.40%
2.00%
2.0-2.5%
1.2-1.7%
mPPE
mPPE (10%GF)
mPPE (15%GF)
mPPE (20%GF)
mPPE (30%GF)
mPPE (25%GF 15%Filler)
mPPE (5%PTFE)
mPPE (10%PTFE)
mPPE (15%PTFE)
1.06-1.10
1.15-1.17
1.19-1.21
1.22-1.24
1.31-1.33
1.42
1.11
1.12
1.15
0.5-0.7%
MD 0.2-0.4% / TD 0.3-0.5%
MD 0.2-0.4% / TD 0.3-0.5%
MD 0.1-0.2% / TD 0.2-0.4%
MD 0.1-0.2% / TD 0.2-0.4%
MD 0.05-0.25% / TD 0.1-0.3%
0.5-0.7%
0.5-0.7%
0.5-0.7%
PPE/PA6 alloy
PPE/PA6 (20%GF)
PPE/PA66 alloy
1.11
1.26
1.10-1.13
MD 1.2-1.4% / TD 1.1-1.3%
MD 0.3-0.5% / TD 0.4-0.6%
MD 1.1-1.3% / TD 1.1-1.3%
PET
PET (15%GF)
PET (30%GF)
PET (45%GF)
PETG
PCTG
1.29-1.40
1.33
1.55-1.70
1.58-1.74
1.27
1.23
0.2-3.0%
0.1-0.4%
0.2-0.9%
0.2-0.9%
0.2-0.5%
0.2-0.5%
PPA
PPA (15%GF)
PPA (33%GF)
PPA (45%GF)
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Student Materials
Polymer Shrinkage
PBT
PBT (UL-HB)
PBT (UL-HB)
PBT (UL-V2-V0)
PBT (UL-V2-V0)
PBT (15%GF)
PBT (15%GF)
PBT (20%GF)
PBT (30%GF)
PBT (30%GF)
PBT (45%GF)
PBT (45%GF)
1.3-1.43
1.26-1.30
1.26-1.31
1.42
1.42
1.41
1.41
1.48
1.52
1.52
1.67
1.67
1.2-2.5%
(3mm) MD 2.2-2.3% TD 2.0-2.1%
(1mm) MD 1.5-1.6% TD 1.4-1.5%
(3mm) MD 2.2-2.4% TD 2.0%
(1mm) MD 1.4% TD 1.4%
(3mm) MD 0.4-0.7% TD 1.3-1.5%
(1mm) MD 0.5% TD 1.0%
0.4-1.4%
(3mm) MD 0.2-0.3% TD 0.5-1.3%
(1mm) MD 0.1-0.3% TD 0.4-0.8%
(3mm) MD 0.2% TD 0.9%
(1mm) MD 0.1% TD 0.6%
PPS
PPS (30%GF)
PPS (40%GF)
PPS (50%GF)
PPS (65%GF/MF)
PPS (30%CF)
1.31-1.35
1.57
1.68
1.75
1.91-1.98
1.44
MD 1.1-1.6% TD 1.6-1.8%
MD 0.3-0.4% TD 0.6-07%
MD 0.3% TD 0.5-0.7%
MD 0.4% TD 0.6%
MD 0.2-0.3% TD 0.4-0.6%
MD 0.1% TD 0.6%
LCP
LCP (15%GF)
LCP (30%GF)
LCP (30%GF)
LCP (50%GF)
LCP (30%CF)
1.35-1.84
1.5
1.62
1.62
1.79
1.49
0.1-0.6%
MD 0.1% TD 0.4%
MD 0.2% TD 0.4%
MD 0-0.2% TD 0.1-0.78%
MD 0.2% TD 0.4%
MD 0.1% TD 0.3%
PAI
PAI (30%GF)
1.42
1.61
0.6-0.85%
0.1-0.25%
PEI
1.27
0.5-0.7%
PSF
PSF (25%MD)
PSF (40%MD)
PSF (10%GF)
PSF (20%GF)
PSF (30%GF)
PSF (40%GF)
1.23
1.48
1.61
1.41
1.47
1.52
1.66
0.6-0.7%
MD 0.5% TD 0.5%
MD 0.5% TD 0.8%
MD 0.4% TD 0.5%
MD 0.3% TD 0.5%
MD 0.2% TD 0.6%
MD 0.2% TD 0.6%
PES
PES (10%GF)
PES (20%GF)
PES (30%GF)
1.37
1.45
1.51
1.53-1.60
0.6-0.7%
0.5-0.6%
0.4-0.6%
0.4-0.6%
PPSF
1.29-1.37
0.5-0.8%
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Student Materials
Polymer Shrinkage
PI
PI (30%GF)
PI (30%CF)
1.33-1.43
1.56
1.43
0.80%
0.40%
0.20%
TPU (Shore A 72)
TPU (Shore A 92)
TPU (Shore D 67)
TPU (20%GF)
TPU (30%LGF)
TPU (40%LGF)
TPU (60%LGF)
TPU (20%BaSO4)
1.04
1.09
1.11
1.22-1.36
1.43
1.52
1.76
1.24-1.32
0.8-1.2%
0.6-1.0%
0.4-0.6%
0.4-1.0%
0.2-0.6%
0.1-0.5%
0.1-0.3%
0.4-1.2%
TPU (40%BaSO4)
1.48-1.55
0.4-1.2%
PVC
Silicone
TPO
TPV
1.65-1.70
1.08-1.14
0.95-1.0
0.94-1.05
0.5-2.5%
0-0.5%
0.8-1.0%
1.5-2.5%
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Student Materials