Create a selection
This large drill bit has rusted significantly, to the extent that some of the material is flaking from the surface. The main body of the piece is iron, and the orange-brown rust is iron oxide, which has formed over many years. The tip of the drill has not aged in the same way, and this is because it is made of a different material altogether. This material is tungsten carbide, and it is used on the tips of drill bits as it is much harder and wear-resistant than the iron used in the main body of the bit.
Sample ID: 308
Add materials you find interesting to your own selections.
Use the 
button to select a material and get started.