While free versions of older editions (such as ASTM D618-13) can sometimes be found on document-sharing websites, using these is highly discouraged. They are often outdated, may not be complete, and could contain errors. Furthermore, ASTM has explicit policies regarding the use of their standards, and using an unofficial copy could put a company at risk of non-compliance and legal liability.
If you are looking for the , you likely need to understand the specific requirements for conditioning your test specimens. This post breaks down what the standard covers, why it matters, and how to access the official document.
is the current standard practice for conditioning plastics for testing . Published in July 2021, it establishes standardized temperature and humidity conditions to ensure reproducible results across different laboratories and materials. Core Conditioning Procedures astm d618-21 pdf
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This means the specimen was conditioned for 40 hours at 23°C and 50% relative humidity before testing. Example 2:
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The you plan to run next (e.g., tensile, flexural, impact) Your current laboratory climate control capabilities
The standard also dictates the of conditioning. Depending on the thickness of the specimen and the material type, conditioning may require a minimum of 40 hours, or until the specimen reaches constant weight (equilibrium).
Because ASTM standards are protected by copyright laws, the official, full-text PDF document is not legally available for free on public forums or file-sharing websites.