im attempting to make a flashlight prototype that is extremely bright and have come up with all the other components needed however i am missing the backing for the filament to adaquately reflect the light without melting. if you know of a substance i could try i would very appreciative.

Tungsten has a very high melting point and if adequately polished might do. I have no idea how economical such a device might be but wish you success.

 

Obviously the thickness of the reflector and the duration of exposure to high temperatures will play a role in your selection.

 

A great reference would be "Nature's Building Blocks" by John Emsley, check it out.

Thanks I'll look into that.

 

The substance doesn't need to be reflective for long. It's a flash and then it's gone. Kinda like a flash bang grenade but without the bang.

This requirement simplifies things for you, then. I am most pleased to have been of some assistance and curious to follow your progress.

Not really satisfied but gave Me a small crumb to nibble on till I get more comments. Plus it kinda rude to shot down someone's ideas or to simply ignore them so I say thanks and then I look into it.

Aluminium

A layer of silver on a thick aluminium backing would work for a short while.

In general hot filaments are an inefficient way to produce light.

Aluminium

Potential with a heat sink. You're unlikely to do better for a reasonable price.

Affirmative, aluminum is widely available and easily worked, strong for its weight and a good conductor. Plus less hazardous than magnesium and more corrosion resistant.

 

A reasonable choice to start.