GB/T 12160-2019 in English

This standard outlines the procedures for calibrating extensometer systems used in uniaxial testing of metallic materials. It specifies the requirements for equipment, calibration methods, and performance criteria to ensure the accuracy and reliability of measurements. The document provides detailed guidelines on the calibration process, including the use of reference standards and the evaluation of measurement uncertainties. It also defines the conditions under which calibrations should be conducted to maintain consistency and traceability. The standard is applicable to laboratories and testing facilities that perform mechanical testing of metals. It ensures that the extensometer systems meet specified technical requirements for precision and repeatability.