Alliage à expansion contrôlée 36Ni-Fe
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Spécification, Chemical & Performance mécanique
At 36 percent, the primary component of is nickel, giving this alloy an extremely low coefficient of thermal expansion—about one-tenth that of 18-8 stainless steel. NAS 36LG maintains thermal stress due to temperature variation at an extremely low level. When used with low-temperature materials, complex surface forms such as waves, bellows and loop patterns are not required, making it an easy metal to work with.
This alloy has a high ductility at extremely low temperatures and is particularly good for welding. Given these properties, NAS 36LG is used in liquefied natural gas ships, membrane material for land container tanks, and a variety of container and piping materials for handling extremely low-temperature fluids. It can be supplied in coil and sheet forms
Low-temperature ductility
Because of its austenitic structure, the impact value does not vary, ensuring adequate ductility at room temperature and even extremely low temperatures.
Manque de maniabilité
Soft and extendible at room temperature, NAS 36LG can be easily worked.
Résistance à la corrosion
Because NAS 36LG does not contain the chromium found in stainless steel, care must be taken to ensure rusting does not occur.
Applications
Membranes for liquefied natural gas ships and land storage tanks, containers for extremely low-temperature fluids
