Iron+and+Steel

=Iron and Steel=



 1. Find the meaning of "Wrought Iron" and its uses Wrought iron is commercially pure iron which contains a very low level of carbon. It was one of the most used and common forms of malleable iron, before the development of other ways of steelmaking. It was used in the making of swords, cutlery and different other blades, as well as rivets, nails, chains, railway couplings, water and steam pipes, nuts, bolts, horseshoes, handrails, straps for timber, ornamental ironwork and roof trusses.  2. Answer: Do you think metals are "cold" materials? Explain  I do believe that metals are cold materials because they tend to be at lower temperatures than the rest of the environment in which they are immersed.


//a. **Wires** are commonly used to carry electricity. b.// //I don’t believe that the **joints** that support those two pieces of wood together are strong enough.// //c. **Mortar** is a plastic mixture that is used when brick lying.  d.// //Because of its high thermal conductivity and specific heat capacity, **cast iron** is usually used to make cookware and disk brake rotors.  e. Gas flame, electric arc and laser are one of the common sources of energy used in the process of **welding.

Recording: media type="file" key="oracionessteeliron.wav"**//