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Plastic Material Shrinkage Factor

Plastic material name  Shrinkage ratio (%)

 

 

Acrylonitrile Butadiene Styrene polymer

ABS

0.4〜0.9

 

Polystyrene

PS

0.4〜0.7

 

Acrylonitrile styrene
AS

0.2〜0.7

 

Ethylene vinyl acetate
EVA

0.7〜1.2

 

Poly propylene
PP

1.0〜2.5

 

Poly propylene
with 40% glass fibers

0.2〜0.8

 

High density polyethylene
HDPE

2.0〜6.0

 

Methacrylic acid methyl ester (acrylic)
PMMA

0.1〜0.4

 

Polyamide (Nylon 6)
PA6

0.5〜1.5

 

Polyamide (Nylon 66)
PA66

0.8〜1.5

 

Poly acetal
POM

2.0〜2.5

 

Poly butylenes terephthalate
PBT with 30% glass fibers

0.2〜0.8

 

Polycarbonate
PC

0.5〜0.7

 

Poly phenylene sulfide
PPS with 40% glass fibers

0.2〜0.4

 

Liquid crystal polymer
LCP with 40% glass fibers

0.2〜0.8

 

Modified polyphenylene oxide
(Modified PPO)

0.1〜0.5

 

Poly sulfone
PSF

0.7〜0.8

 

Polyether sulfone PES

0.6〜0.8

 

Poly ethylene terephthalate
PET

0.2〜0.4

 

Polyether ether ketone
PEEK

0.7〜1.9