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General vacuum forming material specs  (Download in Word Format)
To help you select vacuum forming plastics for your needs, the most common vacuum forming materials available & their specs are listed below, all of which we can vacuum form for you.

General vacuum forming material specs - 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

specs 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%
specs 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 70 - 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 NA NA
Surface resistivity ≤ 104 ≤ 104 NA NA
Hardness shore A/D 98 / 65 99 / 73 DNS DNS
specs HIPS 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 material 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)