Astm D61821 Pdf May 2026
This test method describes the procedures to determine [primary property, e.g., tensile strength, flexural modulus, permeability, etc.] of [material, e.g., polymer, composite, coating] under specified conditions. The method applies to laboratory specimens prepared under controlled temperature and humidity and is intended for routine quality control and comparative testing rather than absolute material characterization.
ASTM D618 outlines the standard practices for conditioning plastics for testing. Why is this necessary? Plastic materials are hygroscopic (they absorb moisture from the air) and sensitive to temperature. A nylon part tested at 20% relative humidity (RH) will yield vastly different mechanical strength results than the same part tested at 80% RH.
Key objectives of ASTM D618:
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| Potential Standard | Actual Title | Likelihood | | :--- | :--- | :--- | | ASTM D618-21 | Conditioning Plastics for Testing (2021 edition) | 99% Probable | | ASTM D6182 | Standard Test Method for... (Does not exist) | Low | | ASTM E1821 | Standard Test Method for Determination of Carbohydrates in Biomass | Unlikely | | ASTM D1821 | Standard Test Method for... (Withdrawn 1992) | Low | astm d61821 pdf
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The only source guaranteed to be accurate, complete, and up-to-date is ASTM International. This test method describes the procedures to determine