Properties of wrought iron
Wrought iron is an iron obtained from smelting pig iron with a very low carbon of not less than 0.08. It is tough, malleable, ductile, corrosion resistant and can be easily welded. The name wrought means ability to be hammered, rolled or otherwise worked while hot enough to expel molten slag. It is fatigue resistance because of its toughness and it contains less carbon than cast iron which makes it softer and more ductile.
In this article, you’ll get to know the applications of wrought iron and you’ll have understanding on its properties. Keep focus while reading and gain the knowledge.
Wrought iron is highly refined with small amount of slag forged out into fibre. It contains 99% of iron, making it to easily undergoes these processes: forging, bending and drawing.
Applications of Wrought Iron
Wrought iron is highly used for decorative items like, fences, gates, railings, balconies, porches, canopies, roof cresting, grilles, hardware, nails, iron cramps, lamp, structural members in tension (I, H and other beam) etc.
Wrought iron is widely used during 19th century in construction of building, but was replaced in the 20th century with steel.
Wrought iron can be joined by welding or riveting its parts together. Deterioration occurs gradually over long period of time on wrought iron which requires appropriate routine or maintainable control. The strength value of wrought iron is 220N/mm² while mild steel strength is 230N/mm².
Due to the very low carbon and alloy contents of wrought iron as it contains rolled-in slag. The slag can cause defects to its joint when weld. It can be prevented or minimize when a low current technique is used on the wrought iron.
Wrought iron is produced from cast iron in stages. It consist of very pure iron 0.02 – 0.05% carbon and siliceous slag.
The stage at which wrought iron was produced from cast iron involve melting and piddling, to expose it to oxygen, which oxidised and remove many impurities, such as silicon, carbon and manganese. It then cooled until it became semi-molten, pasty, iron and slag mixture. Wrought iron is known by its fibrous appearance. It get more stronger when ever it’s worked and it deforms without failing only when expose to intense heat (e.g. fire).
And that is it for this article, properties and applications of wrought iron. I hopefully believed you now have knowledge on wrought iron properties and application. Don’t hesitate to ask questions via our comment box and please share with other friends on social media. Thanks for reading!