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Machine grade polycarbonate (PC) is a transparent amorphous thermoplastic which offers very high impact strength and high modulus of elasticity. The material has a 290Â°F (145Â°C) heat deflection temperature at 264 psi, absorbs very little moisture and resists acidic solutions. These properties, in addition to good electrical characteristics, make machine grade polycarbonate stock shapes an excellent choice for electrical/electronic applications.
Maximum Service Temperature. PVC-U and PVC-M pressure pipes are suitable for use at service temperatures up to 50Â°C. For PVC-O pipes, the maximum continuous operating temperature should be limited to 45Â°C.he coefficient of thermal expansion is 7 x 10 -5 /Â°C. A handy rule is 7 mm change in length for every 10 metres for every 10Â°C change in temperature. Example. A 150 metre line of PVC pipe is being installed with the temperature at 28Â°C. The service temperature will be 18Â°C.