The sole plate (the metal part) is made out of an aluminum alloy often coated in Teflon... Not sure bout the plastic parts :/
Steam trains have always been made of iron and steel.
Iron is to shirt as steam is to pants.
Iron is corroded in steam.
The iron horse is a steam locomotive, use began in the beginning of the 1800's
Mostly iron, but also some brass and some other materials
The standard iron for clothing was created by Henry Seeley in 1882. It was the Eldec Company that created the steam iron in 1926.
steam engines, coal, iron, plague
no.
An iron that uses steam to make to fabric more malleable before heating it to flatten it out
Fe is the chemical symbol for iron. When iron reacts with steam it corrodes, or rusts.
An iron horse is a steam railway locomotive
There is no specific collective noun for steam engines, in which case any noun suitable for the context will work; for example a collection of steam engines, a display of steam engines, a museum of steam engines, etc.