Steel is a alloy, meaning it contains a mixture of different metals to make it more suitable for a specific job. Different amounts of carbon can be added to steel, which affects what it can be used for. Low carbon steels, can be easily shaped and are typically used for car body panels. High carbon steels are used for cutting tools, as they have much resistance. Stainless steel contains chronium and nickel and is resistant to corrosion - this is way stainless steel is used for cutlery. Steel is cheap, but costly to transport, due to its mass. Low carbon steels are not always resistant to corrosion. Steel also has a high expansion rate in varying temperatures, which causes it to crack and become deformed.
Titanium is a strong, corrosion resistant metal, which is used as material for jets and tanks. It's durable and lasts a long time. The main issue with titanium is that its extraction requires many steps, making it very expensive to get hold of.
i hope this helps1 :)
Answered Sat 23rd February, 2013 @ 13:09 by R.Perkins