This vacuum forming material guide lists the most common vacuum forming material types available & their specifications - all of which we can vacuum form for you.
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General vacuum
forming material specifications - when in sheet form ABS = Acrylonitrile Butadiene Styrene COND. = Conductive HDPE = High Density Polyethylene HIPS = High Impact/Polystyrene PETG = Polyethyleneterephthalate Glycol PP = Polypropylene PVC = Polyvinyl Chloride UVS = Ultra Violet Stable |
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| specifications | ABS | ABS (F/R) | HDPE | HIPS |
| Density (specific gravity) | 1.08 g/cm³ | 1.24 g/cm³ | 0.96 g/cm³ | 1.06 g/cm³ |
| Izod notched impact strength @ 23°c | 400-420 j/m | 160-200 j/m | 16 kj/m² | 15.0 kj/m² |
| Izod notched impact strength @ -20°c | 230-280 j/m | 60-70 j/m | DNS | DNS |
| Vicat softening temperature | 97-101°c | 88-92°c | 125°c | 97°c |
| Heat deflection temperature | 80-84°c | 76-80°c | 90°c | 75-78°c |
| Tensile strength | 30-40 MPa | 40-45 MPa | 23 N/mm² | 20 MPa |
| Flexural modulus | 2.0-2.2 GPa | 2.0-2.5 GPa | DNS | 1.7-1.8 GPa |
| Flammability rating | HB | UL94 V0 | HB | HB |
| Forming Temperature | 140-190°c | 140-190°c | 145-160°c | 120-140°c |
| Melt flow index | 6.0 g/10min | 22.0 g/10min | 0.4-1.0 g/10min | 4.5 g/10min |
| Mould shrinkage (linear) | 0.4-0.7% | 0.5-0.7% | 2.0-3.5% | 0.4-0.7% |
| specifications | HDPE COND. | HIPS COND. | PP | PVC |
| Density (specific gravity) | 1.04 g/cm³ | 1.13 g/cm³ | 0.91 g/cm³ | 1.37 g/cm³ |
| Izod notched impact strength @ 23°c | 27 kj/m² | 10 kj/m² | 40 kj/m² | DNS |
| Izod notched impact strength @ -20°c | 13 kj/m² | 2 kj/m² | DNS | DNS |
| Vicat softening temperature | 127°c | 93°c | 70°c | 76-76°c |
| Heat deflection temperature | 56°c | 81°c | 80°c | 67°c |
| Tensile strength | 29 MPa | 20 MPa | 29-31 N/mm | 51-55 N/mm² |
| Flexural modulus | 820 MPa | 2100 MPa | 25-27 N/mm² | DNS |
| Flammability rating | HB | HB | HB | Class 1 |
| Forming Temperature | DNS | DNS | 155-175°c | 110-190°c |
| Melt flow index | 6 g/10 min-1 | DNS | 0.3-1.0 g/10min | DNS |
| Mould shrinkage (linear) | 1.4-1.6% | DNS | 1.5-2.0% | 0.4-0.7% |
| Volume resistivity | < 10³ | 10³ | N/A | N/A |
| Surface resistivity | 104 | 104 | N/A | N/A |
| Hardness shore A/D | 98/65 | 99/73 | DNS | DNS |
| specifications | HI/PS CLEAR | HIPS UVS | PETG (@3mm) | KEY & NOTES |
| Density (specific gravity) | 1.03 g/cm³ | 1.02 g/cm³ | 1.27 g/cm³ |
These material specs should be used as a guide (DNS=Data not) (supplied by) (mat'l. supplier) |
| Izod notched impact strength | 2.3 j/m | 120 j/m | 88 j/m | |
| Vicat softening temperature | 90°c | 97°c | 83°c | |
| Heat deflection temperature | 71°c | DNS | 74°c | |
| Tensile strength | 26.4 MPa | 23 MPa | 26 MPa @break | |
| Flexural strength | 63 MPa | 32 MPa | 77 MPa | |
| Falling dart impact strength | DNS | 50.5 j | DNS | |
| Flammability rating | DNS | DNS | HB (V2>3.2mm) | |
