Cold box and magnesium-aluminum alloy
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Why are magnesium-aluminum alloys commonly used for the equipment and pipelines inside the cryogenic tank of air separation units, and what properties of this material are responsible for that?
Magnesium-aluminum alloys have a face-centered cubic crystal structure; they are resistant to low temperatures, and their strength and toughness do not decrease at low temperatures – in fact, they may even increase slightly. At the same time, its thermal conductivity is several times higher than that of stainless steel; therefore, for a given heat transfer load, the required heat exchange area can be reduced accordingly~
Aluminum-magnesium alloy. Aluminum alloys can be used down to -269°C without significant brittle transition. . . The material has a low density and high specific strength