Editing Metal (section)

===Refractory metal===
{{Main|Refractory metal}}
A refractory metal is a metal that is very resistant to heat and wear. Which metals belong to this category varies; the most common definition includes niobium, molybdenum, tantalum, tungsten, and rhenium as well as their alloys. They all have melting points above 2000&nbsp;°C, and a high [[hardness]] at room temperature. Several compounds such as titanium nitride are also described as refractory metals.
<gallery widths="165" heights="165">
File:Niobium crystals and 1cm3 cube.jpg|Niobium crystals and a 1&nbsp;cm<sup>3</sup> [[anodizing|anodized]] niobium cube for comparison
File:Macro Photographs of 3D Print of NASA Meatball - Made out of GRX-810, an Oxide Dispersion Strengthened (ODS) High Temperature Alloy (GRC-2023-C-02309).jpg|3D print of NASA meatball, made out of GRX-810, an oxide dispersion strengthened high temperature alloy
File:Rhenium single crystal bar and 1cm3 cube.jpg|Rhenium single crystal, a remelted bar, and a 1&nbsp;cm<sup>3</sup> rhenium cube for comparison
File:Titanium nitride TiN.jpg|Titanium nitride powder
</gallery>