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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 |
