1.1 This specification is intended to be a means of calling out finished plastic parts ready for industrial or consumer use.
1.2 This specification covers finished parts and shapes from which parts are machined, made from a semi-crystalline polyimide (PI).
1.3 This specification is intended to replace MIL-R-46198 and Provisional Standard Specification PS 93. NOTE 1—There is no known ISO equivalent to this standard.
1.4 This specification covers parts made from semicrystalline polyimide, which is a thermosetting material that shows no softening or melting by DMA (D4065) at or below 260°C (500°F).
1.5 Since PI is a thermoset resin, no provisions are included for recycled products.
1.6 The classification system outlined in this specification is intended to be identical to that used by Department of Defense for over 20 years. No changes are intended at this time.
1.7 The values are stated in SI units and are regarded as standard in all property and dimensional tables. For reference purposes, inch-pound units are stated in parentheses.
1.8 Application—Parts in this specification are generally used for applications requiring the following combination of properties: low coefficient of friction, and low thermal expansion coupled with heat resistance for continuous operation at temperatures up to 260°C (500°F) and for short-term excursions upward to 482°C (900°F).
1.9 The following precautionary caveat pertains only to the test method portion, Section 12, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D6456-10(2018) Referenced Document
ASTM D1600 Standard Terminology for Abbreviated Terms Relating to Plastics
ASTM D1708 Standard Test Method for Tensile Properties of Plastics By Use of Microtensile Specimens
ASTM D3892 Standard Practice for Packaging/Packing of Plastics
ASTM D4065 Standard Practice for Plastics: Dynamic Mechanical Properties: Determination and Report of Procedures
ASTM D638 Standard Test Method for Tensile Properties of Plastics
ASTM D695 Standard Test Method for Compressive Properties of Rigid Plastics
ASTM D790 Standard Test Methods for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials*, 2024-04-22 Update
ASTM D792 Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement
ASTM D883 Standard Terminology Relating to Plastics*, 2024-02-01 Update
ASTM E8 Standard Test Methods for Tension Testing of Metallic Materials
ASTM D6456-10(2018) history
2018ASTM D6456-10(2018) Standard Specification for Finished Parts Made from Polyimide Resin
2010ASTM D6456-10 Standard Specification for Finished Parts Made from Polyimide Resin
1999ASTM D6456-99(2004) Standard Specification for Finished Parts Made from Polyimide Resin
1999ASTM D6456-99 Standard Specification for Finished Parts Made from Polyimide Resin