Temperature for high-temperature tensile testing of 15CrMoR steel plates
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Currently, the shell and tube sides of the heat exchangers are both made from 15CrMoR (H) steel plates. The design temperature on the tube side is 540°C, while it is 390°C on the shell side. It is required that these steel plates undergo high-temperature tensile testing. Due to the limited amount of material used, the thickness of the steel plate for the shell-side cylinder is the same as that for the tube-side end caps; one steel plate is sufficient in such cases. Is it possible to conduct only the high-temperature tensile test at 540°C for the tube side? Is it necessary to conduct another high-temperature tensile test at 390°C on the shell side? I seek guidance from those who are more experienced
Also, in GB150 and GB713, the maximum high-temperature yield strength specified for 15CrMoR is only 500°C? According to what standard is the yield strength in the high-temperature tensile test at 540°C evaluated as qualified or not?
No, it should be done separately; the criteria for acceptable temperature levels are different for each.
High-temperature tensile tests should be conducted at their respective test temperatures