Mangalloy

Mangalloy is made by alloying steel, containing carbon 0.8% to 1.25% with 10% to 14% manganese. It is a unique non-magnetic steel with extreme anti-wear properties. The material is very resistant to abrasion and will achieve two to three times its surface hardness during conditions of impact or machining without any increase in brittleness which is usually associated with hardness. This unique property of mangalloy has many disadvantages as if we machine its surface the hardness increased that will interrupt the machining process.

Mangalloy has very good history as it was used by "SPARTANS" for the making of their swords, and this alloy gives an extra hardness to their swords.

Mangalloy was the first alloy made from carbon steel and invented by a British inventor Sir Robert Hadfield in 1882, so it is also called Hadfield steel and it was used for making helmets in world war I.

                  Helmet used in World War I

In 1860, Sir Henry Bessemer found that adding manganese and carbon to the steel after it was blown helped to remove excess sulfur and oxygen.Sulfur combines with iron to form a sulfide that has a lower melting point than steel, causing weak spots, which prevented hot rolling. Manganese is usually alloyed with most modern steels because of its powerful ability to remove sulfur, phosphorus and oxygen, which are all common impurities in steel.