This Standard covers only ABS materials and ABS alloys suitable for Injection Molding and Extrusions. Some of these compositions are also suitable for compression molding. This specification Standard is intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Materials are to be selected by personnel with expertise in the plastics field where the economics, the environment to be encountered, the inherent properties of the materials, the part design, the part performance required, and the manufacturing process to be employed all enter into the selection. The properties included in this Standard are those required to identify the compositions covered. Other requirements necessary to identify particular characteristics important to specialized applications are addressed by using the suffixes given in Section 5 of the Standard.