Introduction
Metal high-temperature tensile testing is one of the most important tests used to measure metals mechanical response to applied stresses at elevated temperatures. The purpose of metal high-temperature tensile testing is to determine the influence of temperature on strength, ductility, and other properties of the metal. This testing is done to characterize metal performance at elevated temperatures and to evaluate the performance of the metal under extreme temperatures that might occur in service. High-temperature tensile testing is performed to determine a metal’s mechanical behavior when exposed to elevated temperatures.
Scope
This specification is applicable to ferrous and non-ferrous alloys. It includes tension tests, creep tests, and ductility tests for determining the response of metal to temperature.
Methods
This specification describes several methods for conducting metal high-temperature tensile testing. These methods are designed to allow for the characterization of the mechanical properties of a metal at elevated temperatures. Metal high-temperature tensile testing is performed using a universal testing machine. The specimen is placed in the testing machine and a tension force is applied to the specimen. The testing machine records the force induced by the tension and the variation of the force with time. The specimen is usually heated before the testing begins and the temperature is kept constant throughout the duration of the testing.
The specimen’s response to the applied load is evaluated by recording the changes in load with time and the changes in strain with time. The load is recorded in terms of a load-time curve and the strain is recorded in terms of a strain-time curve. These curves are used to calculate the elastic modulus, yield strength, ultimate strength, and other parameters of the specimen’s response to the applied load.
For testing at elevated temperatures, the temperature of the specimen is usually kept constant throughout the duration of the testing. The temperature can be varied depending on the test requirements. In most cases, the test procedure is the same as for tests at room temperature.
The specimen is typically tested in an inert atmosphere at temperatures up to 1000 degrees Celsius. The testing can be conducted in an open atmosphere or in an atmosphere with a partial- or full-pressure inert gas, such as argon or nitrogen.
Marking
The testing specimen should be clearly marked with the manufacturer’s logo and the test procedure used. This will ensure that any future testing can be conducted in accordance with the same procedure.
Results
The results of the metal high-temperature tensile testing can be used to characterize the mechanical properties of the metal, such as Young’s modulus, yield strength, ultimate strength, ductility, and fatigue properties. The results can also be used to determine the effect of temperature on the strength and other properties of the metal.
Conclusion
Metal high-temperature tensile testing is a valuable tool for evaluating the mechanical properties of metal at elevated temperatures. It can be used to characterize the mechanical properties of metal and to evaluate the effects of temperature on strength, ductility, and other properties. Metal high-temperature tensile testing can also be used to determine the fatigue properties of the metal. The test procedure is typically conducted in an inert atmosphere and the results can be used to evaluate the performance of the metal under extreme temperatures.
