The phase diagram shows that the melting point of each of the pure elements is a unique value: 1357 K for copper and 1728 K for nickel. From: Newey and Weaver, "Materials Principles and Practice," ...

The copper-melting technique created by Zhu in 2006 ... which had been liquefied by the high temperatures, flowed freely on the ground, forming crystals of fused copper in a variety of shapes ...

Lead, tin, and low melting alloys are non-ferrous alloys that are easily meltable with relatively low melting temperatures. They are used in the manufacture of solders, semiconductors, batteries, ...