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Plastic Material Shrinkage Rates

This information should be used as an ‘on the spot’ reference only. Users should follow the material suppliers processing data sheets.

MATERIAL MOULDING SHRINKAGE %
ABS 0.6
ABS/PC ALLOY 0.7
ACETAL 1.8
ACRYLIC 0.6
CAB 0.5
HDPE 3
LDPE 3
NYLON 6 1.2
NYLON 6 (30% GF) 0.4
NYLON 6/6 1.5
NYLON 6/6 (33% GF) 0.5
NYLON 11 1
NYLON 12 1.4
PEEK 1.1
POLYCARBONATE 0.6
POLYESTER PBT 2
PET (SEMI CRYSTALLINE) 0.4
PET (AMORPHOUS) 0.4
POLYPROPYLENE (COPOLYMER) 2
POLYPROPYLENE (HOMOPOLYMER) 1.5
POLYPROPYLENE (30% TALC FILLED) 1
POLYPROPYLENE (30% GF) 0.5
POLYSTYRENE 0.5
POLYSTYRENE (30% GF) 0.1
PVC P 1.5
PVC U 0.4
SAN 0.6
SAN (30% GF) 0.1
TPE 2.5

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