What is ASTM E139 – Standard for Creep and Stress-Rupture Testing of Metallic Materials
ASTM E139 (latest version ASTM E139-24), titled Standard Test Methods for Conducting Creep, Creep-Rupture, and Stress-Rupture Tests of Metallic Materials, is one of the most widely recognised global standards for long-term high-temperature mechanical performance evaluation of metals and metal alloys.
This standard specifies uniform laboratory procedures for carrying out tensile creep and stress rupture tests under constant load and stable elevated temperature. During testing, engineers measure key parameters including creep strain, steady-state creep rate, time to rupture, elongation and reduction of area after fracture. It also defines requirements for test equipment, specimen preparation, test operation and final test report content to guarantee repeatable and comparable test data across different laboratories worldwide.
Test data generated following ASTM E139 delivers critical evidence for material selection, component design and product quality verification for high-temperature service components. Industries including aerospace, power generation, thermal energy and new energy widely adopt this standard to assess nickel-based superalloys, heat-resistant steels and other high-performance metallic materials.
Our high-temperature creep testing machine fully complies with ASTM E139 and ISO 204 standards. It provides stable long-duration testing, precise temperature & load control, and automatic data acquisition, helping material labs and manufacturers obtain reliable creep and rupture test results efficiently.