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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.
At temperatures above 20Â°C the maximum allowable operating pressure must be reduced in proportion to the material strength. Use of PVC pipes in the temperature range from 20Â°C up to the recommended maximum continuous operating temperature of 60Â°C is well defined (for more information see PVC Temperature Considerations).owever, it is not customary to utilise this increase in strength by increasing the pressure rating. The nominal pressure rating of the pipe at 20Â°C, or PN, should still define the maximum allowable operating pressure at lower temperatures.