Iron is the main ingredient, but it usually contains carbon too.
Iron
because its a strong metal
Any metal that isn't too soft can be used. Stainless steel, regular steels, brass. Even aluminium. Titanium can be used as well.
Dividers are used just like compasses but for metal. Basically they are used to make perfect circle.
Manhole covers are used for many things. Manhole covers are used to cover up holes in the ground where sewage can be found in order to protect people.
Round manhole covers are generally used over square manholes because they cannot fall through the manhole openings. There is a chance that if square manhole covers are used they can be turned at an angle and fall through the manhole opening. Round manhole covers can be moved more easily as well.
Iron is the main ingredient, but it usually contains carbon too.
If they were made of wood they would rot and have to be replaced frequently. The metals used are also inexpensive.
steel
Magnesium
a man dog is a good type of metal
Magnesium.
Magnesium
Man-hole covers (inspection covers) are made from heavy, thick cast-iron. Gates can be made from wood or metal.
penis metal
Chair covers are the cloth or plastic (spandex) material which is used to cover the chair. Chair covers can be used to protect the chair or to decorate and make chair attractive.