PVC Technical Data and Information
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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 |
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| 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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