There are many ways of cutting metal – straight cuts can be tile, holes made with a drill, and special shapes cut with taps made with a saw or snips, bits cut away with a cold chisel or and dies and with tools such as tank cutters.
Handsaws
The teeth of ordinary handsaws used for woodworking are [...]

Hacksaw blades are usually made from one of two sorts of steel low-alloy steel or high-speed steel. Low-alloy steel blades tend to blunt more quickly than high-speed steel ones.
Blades are normally available in two lengths 250mm and 300mm and with a variety of teeth per inch (called coarse­ness). Blades with 14, 15, 24 and 32 [...]

Cold chisels are useful tools for cutting things apart quickly when the accuracy of the cut and the finish left are of no importance like removing rusted bolts. However, special cold chisels can be used for shaping metals precisely.
All cold chisels are basically pieces of hardened steel with a cutting edge ground on one end. [...]