An industrial oven must operate at $250C.$ The oven consists of shelves which are currently fabricated from a tungsten alloy which are heavy, difficult to remove and high cost. Therefore, they are being redesigned to reduce their weight and cost, without compromising their strength.

Use the property charts below and overleaf to create a short list of at least $3$ materials for the application. You should select one final material and justify why the other options have been disregarded.