a) Define the copper alloys and categories.

Which of these statements is the best description of the properties of refractory metals?  Group of answer choices extremely high melting temperature soft, ductile, and oxidation resistant lowest density of all structural metals low density, high electrical and thermal conductivities, and a resistance to corrosion in the ambient atmosphere.

Hello. I am having trouble answering a question for my material science class. I would apreciate the help. Thanks.

what does alloy's melting temperature will dictate?

Give a classification of materials based on (solid phase)