Revised Standard from Last Update.

1. SCOPE

1.1 This standard covers the requirements, methods of sampling and tests for both polycarbonate homopolymer, co-polymers and high-heat polymers. It applies to unmodified materials ready for normal use and materials modified for example, by colourants, additives, fillers, reinforcing materials and polymer modifiers, suitably compounded to ensure desired performance of the parts manufactured from it by any of the usual processing techniques like injection moulding, extrusion, blow moulding, compression moulding etc.

1.2 This standard establishes a system for designating various possible polycarbonate materials. Since the system is not based on application, part design and performance requirements, it cannot be used for selection of a polycarbonate material for specific use. For selection of material for specific use, experts well versed with the application, part design, performance requirements, materials and processing techniques should be consulted. Similarly, the code of good processing practices covered in this standard is intended to act as a guide to the processing community. For specific application and material, expert opinion should be sought for part and mould design, machine selection and processing parameters.

1.3 The classification system for types of polycarbonate plastics is differentiated from each other by a classification system based on appropriate levels of the designatory properties:

a) Melt volume-flow rate; and

b) Charpy notched impact strength; and upon information about the intended application and/or method of processing technique, important properties, additives, colorants, fillers and reinforcing materials.

1.4 This standard is applicable only to virgin polycarbonate material and does not cover polycarbonate blends and alloys.