What is Alloy 42 and its Properties and Appearance?

Alloy 42 has a silvery-white lustrous metal and belongs to the controlled expansion and low expansion alloy groups. Alloy 42 exhibits low, constant thermal expansion in temperatures up to 570° F (300° C) with good workability, weldability and shock resistance. This makes it well suited to applications where the thermal expansion must be minimized as an essential part of a component design.
With an ultimate tensile strength of 500, minimum yield strength of 300, and 30% elongation, it makes an excellent match with silicon and ceramic materials (alumina, beryllia, and vitreous glass compounds).

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