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A core component of an ASTM E83 report is determining the system's class. The classifications are established by mapping test results against strict maximum error limits: Classification Max. Error of Gage Length Max. Error of Strain Common Use Cases ±0.0001plus or minus 0.0001 Highest precision calibration standards Class B-1 ±0.0001plus or minus 0.0001 General modulus and yield strength testing Class B-2 ±0.0002plus or minus 0.0002 Moderately precise tension testing Class C ±0.001plus or minus 0.001 Standard material yield mapping Class D ±0.01plus or minus 0.01 High elongation rubber or plastic testing 🛠️ Essential Elements for the Technical Report
The standard outlines the procedures for calibrating and classifying extensometer systems based on their accuracy and precision. Key aspects typically covered in the text include:
The official PDF can be purchased for around $60.00 USD and is typically around 16 to 18 pages in length. Note that Redline versions, which highlight changes from a previous version, are also available for a higher price.
Searching for an is the first step toward proper material testing, but how you acquire that PDF matters. Using a free, pirated version from 2014 might save you $70 today, but it could cost you $10,000 in audit fines and lost business if you are caught with obsolete or non-authentic documents. astm e83 pdf
: Extensometer systems are categorized into "classes" (like Class B-1 or C) based on their maximum allowable error. For example, many high-performance tests require a Class B-1 rating to meet strict aerospace or automotive requirements.
is the standard practice for Verification and Classification of Extensometer Systems . This standard establishes procedures for the calibration and categorization of instruments used to measure length changes, typically for determining tensile or compressive strain in materials testing. Where to Find the PDF
The Ultimate Guide to ASTM E83: Standard Practice for Verification and Classification of Extensometer Systems A core component of an ASTM E83 report
| | Typical Use Case | | :--- | :--- | | Class A | Highest precision; used in research, calibration laboratories, and critical applications | | Class B-1 | High accuracy suitable for most general testing requirements | | Class B-2 | Medium accuracy for routine quality control | | Class C | Lower accuracy for less critical testing | | Class D | Low accuracy for preliminary or educational use | | Class E | Lowest accuracy, with correspondingly higher permissible errors |
It categorizes extensometers into classes (e.g., Class A, B-1, B-2, C, D) based on their error magnitude.
It applies to instruments that indicate or record values proportional to length changes—specifically, extensometers measuring tensile or compressive strain. Error of Strain Common Use Cases ±0
ASTM E83 is not an isolated document; it is a cornerstone of many other critical test methods. For example, test methods for determining the tensile properties of metallic materials (ASTM E8) or the flexural properties of plastics (ASTM D790) often cite ASTM E83 to define the required accuracy of the strain-measuring device.
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