Regarding the comparison of materials
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What is the difference between 20# steel and low-alloy steels (15CrMo and 12Cr1MoV), which are commonly used in industrial pipelines? Can 20# steel withstand high temperatures? What about compressive strength? ?
Generally, the upper limit for the operating temperature of 20# carbon steel is around 425 degrees. Near this temperature, a tendency toward graphitization occurs, which leads to a decrease in strength. The high-temperature strength of low-alloy steels is improved due to the addition of elements such as Cr and Mo