Currently, most hydrogen is made this way from natural gas. An electrical current can also be used to separate water into its components of oxygen and hydrogen. This process is known as electrolysis. Some algae and bacteria, using sunlight as their energy source, even give off hydrogen under certain conditions.
Originally, metal roofs were made of corrugated galvanized steel: a wrought ironâsteel sheet was coated with zinc and then roll-formed into corrugated sheets. Another approach is to blend zinc, aluminum, and silicon-coated steel.
High speed steel is made from different steel alloys. Depending on the application and budget the alloy is made from iron and different mixes of carbon, tungsten, cobalt, chro â¦ mium, molybdenum, and vanadium.9 people found this useful.igh speed steel is made from different steel alloys. Depending on the application and budget the alloy is made from iron and different mixes of carbon, tungsten, cobalt, chro â¦ mium, molybdenum, and vanadium. 9 people found this useful.