Heat-resistant steel castings are not the outset, the material used for the first time in the boiler and furnace are basically low-carbon steel, but with the increase in temperature, low-carbon steel has been unable to meet the requirements, the use of this to today's heat-resistant steel.

As we all know, the use of low-carbon steel temperature is generally about 200 ℃, pressure of only 0.8MPa, which is far unable to match the ever-increasing use of the device temperature and the working pressure. The emergence of resistant steel a good solution to this problem, because its temperature has reached 700 ℃, the use of the environment has become more complex and demanding.
From the perspective of the working pressure, MPa to several tens of MPa; the work environment from a simple sulfide atmosphere to an oxidizing atmosphere, a mixed atmosphere and molten salt and liquid metal, a more complex environment, heat-resistant steel casting can be applied.