PVC Technical Data and Information


Polyvinyl chloride (PVC) is a flexible or rigid material that is chemically non reactive. PVC has a broad range of applications, from high volume construction related products to simple electric wire insulation and coatings. Rigid PVC is easily machined, heat formed, welded, and even solvent cemented. PVC can be machined using standard metal working tools and finished to close tolerances and finishes without great difficulty. PVC accepts paint and performs well under most silk screening processes. PVC resins are normally mixed with other additives such as impact modifiers and stabilisers, providing hundreds of PVC based materials with a variety of engineering properties.

Available PVC Products:
Grey rigid sheet, clear rigid sheet, clear thin film, clear strip door curtains, clear plasticised rolls, grey rod, pipe, clear pressure pipe

Properties:
High strength, economical, dimensional stability, good weather resistance, high impact strength, clarity, colourability, flexible or rigid, chemically inert, ease of fabrication, tasteless, odourless, non-toxic, good electrical properties

Applications:
Acid resistant trays, laboratory equipment, ducting, tanks, pipes, tank liners.

Typical properties of PVC

ASTM test

Property

Value

Physical

D792 Specific gravity 1.30-1.58
D570 Water absorption, 24 hours, 3.0 mm thick (%) 0.2
°C Maximum service temp +60
°C Minimum service temp -15
D792 Specific volume (in.³/lb.) 20.5-19.1

Mechanical

D638 Tensile strength at yield N/mm2 57
D638 Elongation at yield (%) 3
D638 Tensile strength at break N/mm2 30
D638 Elongation at break(%) 20
D785 Hardness, Shore 65-85D
Impact strength mj/mm2 no rupture
D256 Notched impact strength mj/mm2 8
Ball indentation hardness N/mm2 120
D790 Flexural strength N/mm2 90
D638 Modulus of elasticity N/mm2 3000

Thermal

C177 Thermal conductivity at 20°C 0.14
D696 Coefficient of thermal expansion K-1.10-4 0.8
D648 Deflection temperature °C 72
D1525 Vicat softening temperature °C 75

Electrical

D150 Dielectric constant At 1kHz 3
D150 Dissipation loss factor At 1kHz 0.01
D257 Volume resistivity (ohm-cm) 10.15
D257 Surface resistancy (ohm) 10.13
D495 Arc resistance(s) 60-80

Fabrication

Welding temperature °C 220
Forming temperature °C 130

These values are representative of those obtained under standard ASTM conditions and should not be used to design parts which function under different conditions.

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