High Conductivity Copper
Heating high conductivity copper accomplishes water hardening till it glows red and then submerging it in a vat of water to cool it down completely. The result is a robust, sturdy metal that can be machined with little difficulty. It is not, however, acceptable for use in welding. Among the applications for this copper, product are the manufacture of files and hammers. High conductivity copper, such as that provided by Niko Steel and Engineering Limited, is also easy to weld and machine and extremely resistant and durable. Amid the oil toughening process, the metal is heated till it glows red before being immersed in a vat of hot oil to harden. As a result, the surface becomes incredibly difficult to scratch.