ASTM D7292-2018 pdf free download
ASTM D7292-2018 pdf free download.Standard Specification for Extruded, Compression-Molded, and Injection-Molded Basic Shapes of Polyamide-Imide (PAI)
1. Scope
1.1 This specification covers requirements and methods of test for the material, dimensions, and workmanship of extruded, compression molded, and injection molded parts manufactured from PAI. 1.2 The properties included in this specification are those required for the compositions covered. Requirements neces- sary to identify particular characteristics important to special- ized applications are described by the classification system given in Section 5. 1.3 This specification allows for the use of recycled mate- rials provided that specification requirements based upon this specification are met. 1.4 The values stated in English units are to be regarded as standard in all property and dimensional tables. For reference purposes, SI units and conversion factors are also included. 1.5 The following precautionary caveat pertains only to the test method portion Section 12, of this specification. This standard does not purport to address all ofthe safety concerns, ifany, associated with its use. It is the responsibility ofthe user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. N OTE 1—There is no known ISO equivalent to this standard. 1.6 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
4. Applications
4.1 Typical applications for these parts are for products that require low coefficient of friction, good thermal resistance, and toughness up to 250°C. However, usage is not limited to these applications. Specific grades are designed for high strength, wear resistance, low coefficient of friction and reinforced for improved load bearing capacity and non-abrasive wear.
5. Classification and Material
5.1 Product shape and size as defined in the applicable purchase order. 5.2 This specification covers product manufactured as listed in Table S-PAI. Materials included in the designations refer- ence Classification System D5204 callouts where applicable. 5.2.1 The PAI material used in the product is normally categorized by type, grade, and class depending on resin and filler compositions as defined in Table S-PAI. 5.3 The type, class, and grade are further differentiated based on Table S-PAI, Table A, and dimensional requirements, Table I. 5.4 Property Tables: 5.4.1 Table S-PAI is used to describe manufactured parts. 5.4.2 Table I is used to describe products not included in Table S-PAI via a cell callout that includes the applicable Table S-PAI type and specific properties. 5.4.3 To facilitate the incorporation of future or special materials not covered by the Table S-PAI, the “other” category (00) for type, class and grade is shown in the table with the basic properties to be obtained from Table I, as they apply. 5.4.4 Reinforcements and Additive Materials—A symbol (single letter) is to be used for the major reinforcement or combination, or both, along with two numbers which indicate the percentage of addition by mass with the tolerances as tabulated below. This must be included in all Table I callouts.5.5.2 The three examples illustrate how a one-line, alpha- numeric sequence identify the product composition, commer- cial parameters, and physical characteristics of extruded, compression-molded or injection-molded product. A space must be used as a separator between the specification number and the type designation. No separators are needed between type, class, and grade. When special notes are to be included, such information shall be preceded by a comma. Special tolerances must be noted at time of order and are inserted after the grade in parenthesis and preceded by a comma.
