Quite delicate Yinwa steel

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This post was last edited by Thank goodness you're here on 2016-2-16 at 16:21. The 4 large tanks on LNG carriers are made of Inconel steel, which is quite delicate. LNG = Liquified Natural Gas, which is liquefied at -162 degrees Celsius. Once vaporized, its volume increases by 600 times. While studying iron-nickel alloys, Guillaume accidentally discovered that their coefficient of thermal expansion was extremely low; he then conducted research on the entire series of such alloys, which led to the discovery of Invar alloy, Elinvar alloy, and several other useful alloys. People quickly realized the usefulness of Invar alloy, which was used in rapid methods for measuring base lines. This alloy is also widely used in precision instruments, such as for manufacturing the pendulums of thermometers and astronomical clocks. Guillaume also used Eilinwa alloy hairsprings to create fully compensated pendulums in high-end watches and precision clocks, eliminating secondary errors. The special properties of Invar steel make it an essential material in the shipbuilding industry for constructing large LNG carriers, as it prevents cold cracking of the ship’s structure in ultra-low temperature environments. Moreover, Invar is extremely delicate; a 0.7mm thick piece of Invar will rust through within 24 hours if touched with bare hands, so extreme care must be taken during welding! Therefore, during the welding of Invar steel, the highest level of welders is required – namely G-level skilled welders – who must work in extremely harsh conditions while wearing special leather sweat-absorbing gloves.