Mechanical and physical properties of candidated structural materials for cryogenic service are described, and commented on an appropriate selection of materials.
On selecting materials, many factors are taken into consideration according as the systems that are compatible with the intended usage.
This article, therefore covers the criteria on allowable stress for materials, the evaluation method on fracture toughness of ductile materials, the weld strength of Austenite stainless steel (SUS 304, SUS 316) and the stress induced magnetization on these materials.
The joint efficiencies of Aluminium alloy 5083 welded by filler metal 5183 are also included.
As for thermal properties, average thermal conductivities of several kinds of Fiber Reinforced Plastics (FRP) utilized for support system are described and suggested on a combinated use of carbon FRP and glass FRP for high strengh structure with low heat input.
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