Glossary of terms used for defining steels...

Glossary of terms used for defining steels Abrasion resistant steels – These are alloy steels suitable for applications where resistance to wear is a critical demand. Examples of such applications may include resistance to hard particles grinding under a surface sliding over the top of the steel surface, or resistance to impact from rocks and other hard and heavy materials, or resistance to high velocity abrasive dust and other particles. Boron, Manganese, Nickel, and Chromium are the alloying elements used to make it wear resistant. Acid steel – It is the steel made by an acid process. Advanced high strength steels – These are basically steels for auto body with very high strength to weight ratio. Their mechanical properties evolve from their unique processing and structure. Such steels are produced by controlling the cooling rate, from the austenite or austenite plus ferrite phase, either on the run out table of the hot rolling mill (for hot-rolled products) or in the cooling section of the continuous annealing furnace (continuously annealed or hot dip coated products). Air hardening steels – These are alloy steels which may be hardened by cooling in air from a temperature above the transformation range. Such steels attain their martensitic structure without going through the quenching process. Additions of chromium, nickel, molybdenum and manganese are effective toward this end. Aluminum killed steel – It is a type of steel which is produced when aluminum is used as a deoxidizing agent to remove oxygen from steel during its manufacture. Alloy Steels – Alloy or alloyed steels are defined by the ISO specification 4948/1 in the following manner. Alloy steels are those containing any element listed below in a quantity equal to or greater than the quantity for that listed element. Al-0.10%, B-0.008%, Bi-0.10%,...