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Before heat-resistant steel has not yet appeared, most of the cast is made of low carbon steel, due to material properties, such castings generally only use two hundred degrees Celsius environment. While continuously improve all types of power plants use temperature, this material has apparently unable to meet the needs of the job, and heat-resistant steel material is also in this case the operation is born. The new material is generally applied to how special the environment?

According to tests, the use of heat-resistant steel castings use temperature as high as seven hundred degrees Celsius, not only that, the environment has become more complex and demanding. By using a variety of improvements, heat-resistant steel castings performance has been further improved, from a temperature point of view, allows the use of in the range of 200 ~ 1300 ℃; thus the working pressure of view, but also to achieve even a few MPa dozens MPa.
In the beginning, heat-resistant steel castings in an oxidizing atmosphere using simple, now has gradually developed into a more complex environment sulfide atmosphere, a mixed atmosphere and molten salt and liquid metals. The above analysis has proved better, heat-resistant steel castings strong resilience.