For the gunsmithing purposes I am experimenting with casting aluminum.
As I was looking for the cheap sources of scrap aluminum alloys for casting, I tried everything that looked like cast Al so far and every time made sure that volume density was about correct.
Until I came across a few candlesticks that I picked up for a few pennies at a garage sale.
They appear to be made of silver color alloy, which is heavier than Al but lighter than any other metal I am aware of.
The density is about 5.5 g per cubic centimeter in metric, or 0.2 lb per cubic inch or 346 lb per cubic foot in imperial.
The alloy is soft, but not as soft as pure aluminum.
The candlesticks were painted silver and where I scratched the paint the color of the alloy remains unchanged for a couple years now, pretty much like stainless steel would.
It may be a kind of aluminum-zinc-copper alloy, but much lighter than zinc alloy used for furniture hardware, lapel pins and electronic parts.
Any idea what I have?