The high-speed trains are welded with aluminum, and some high-speed rail lines pass through the cold zone of minus 30 degrees Celsius; some instruments, equipment and daily necessities on the Antarctic scientific research ship are made of aluminum and need to withstand minus sixty-seven degrees Celsius Tests; some of the equipment on the merchant ships from China through the Arctic to Europe are also made of aluminum, some of which are exposed outside, and the ambient temperature is also minus 560 degrees Celsius;

Can they work normally in such a cold environment?

The answer is ‘No problem, aluminum alloy and aluminum product are the least afraid of cold and hot.

Aluminum and aluminum alloys are the best low-temperature materials. They have no low-temperature brittleness. They are not as low-temperature brittle as ordinary steel and nickel alloys. Their strength properties increase with temperature, but plasticity and toughness follow. The decrease in temperature is reduced, that is, there is significant low temperature brittleness. However, aluminum and aluminum alloys are very different, and there is no trace of low-temperature brittleness. All of their mechanical properties increase significantly with the decrease of temperature, regardless of the composition of the material, whether it is cast aluminum alloy or deformed aluminum alloy, no matter Whether it is a powder metallurgy alloy or a composite material; it has nothing to do with the state of the material, whether it is in the processing state or in the heat treatment state; it is also independent of the ingot preparation process, whether it is rolled by ingot or continuously cast by melt. Rolled or continuous rolling; no relationship with aluminum extraction process, electrolysis, carbothermal reduction, chemical extraction, no low-temperature brittleness; no dependence on purity, whether it is 99.50%~99.79% of process pure aluminum , or 99.80%~99.949% high-purity aluminum, 99.950%~99.9959% ultra-purity aluminum (Super Purity), 99.9960%~99.9990% extreme purity, >99.9990% ultra-high purity aluminum, etc. No low temperature brittleness.

Interestingly, the other two light metals—magnesium and titanium—have no low-temperature brittleness like aluminum.