If a material specification differs from this practice (e.g., in ASTM D4000), the material specification takes precedence. 4. Significance and Use
If you’re outside North America, you can also access the PDF through international partnerships. For example, the offers PDFs with direct file download and printing options for the REDLINE version. In France, AFNOR offers the PDF with single-user use, but printing might not be permitted.
ASTM D618-21 features four main conditioning methods, each designed for different situations: astm d618-21 pdf
The most common routine requires specimens to condition for a minimum of 40 hours at 23 ± 2°C (73.4 ± 3.6°F) and 50 ± 10% relative humidity. For materials sensitive to moisture, the humidity tolerance narrows to ± 5%.
Section 9 of D618-21 requires you to report: conditioning atmosphere, time, temperature, humidity, and time delay between removal and testing. If a material specification differs from this practice (e
If you tell me which specific plastic material you are testing, I can help suggest the best conditioning procedure (A, B, C, or D) to start with. I can also: Compare ASTM D618 with ISO 291.
In the realm of plastics manufacturing, engineering, and quality control, ensuring consistent and reproducible test results is paramount. Because many plastic materials are hygroscopic (they absorb moisture from the air) or thermally sensitive, their physical, electrical, and mechanical properties change based on environmental conditions. For example, the offers PDFs with direct file
becomes impossible between different laboratories. Standard Laboratory Atmosphere