Steel Corporation
Sant Sena Maharaj Marg, Mumbai, Maharashtra
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Mettallurgical Term

Acid Brittleness/Hydrogen embrittlement :

Brittleness resulting from pickling steel in acid, hydrogen formed by interaction of iron and acid is absorbed and causes brittleness.

Aluminum Killed Steel :

A steel where aluminum is used as a deoxidizing agent.

Annealing :

A slow heating and cooling process. Heating to and holding at a suitable temperature and then cooling at a suitable slow rate.

Austempering :

Carbon steel is quenched above transformation ranges, in a medium having rate of high abstraction sufficiently high to prevent the transformation of high temperature formation products and then holding the alloy, until transformation is complete, at a temperature below that of pearlite formations and above that of martensite formation.

Bainite :

A slender needle like acicular structure appearing in Spring Steel Strips characterized by toughness and greater ductility then tempered martensite.

Bend test :

A test to determine ductility of flat rolled steel strip in which the strip is bent around its axis.

Bonderizing :

A coating with a film composed of zinco phosphate in order to develop better surface for coating.

Camber :

Edgewise curvature, a lateral deviation of an edge from a straight line. Lateral departure of the edge of the material from straight line forming a chord.

Carbide :

A compound of carbon with one or more metallic elements.

Cold rolling :

Rolling metal at a temperature below the softening point of metal to create strain hardening. Cold rolling changes the mechanical properties of strip and produces combination of hardness ductility stiffness etc. known as temper.

Decarburisation :

Removal of carbon from outer surface of steel.

Dish :

A concave shape of strip, across the width.

Elongation :

Increase in length which occurs before fracture of Steel.

Endurance limit :

Maximum alternating stress, which a given components/steel causing will withstand for indefinite number of times without fatigue failure.

Grain :

An individual crystal in a polycrystalline metal or alloy.

Grain size :

A measure of the areas or volumes of grains in a poly crystalline material, usually expressed as an average when the individual sizes are fairly uniform. Grain sizes are reported in terms of number of grains per unit area or volume, in terms of average diameter or as a grain size number derived from area measurement.

Grain boundary :

The regions of a metal between individual grains. Atoms in these boundaries adopt positions of equilibrium between the lattices on either side, and are therefore in a state of local desender, depending upon the angle between the lattice axis on either side.
 

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Steel Corporation

Ashok Shah(Partner)
No. 23/27, Sant Sena Maharaj Marg Kumbharwada 2nd Lane
Mumbai - 400004
Maharashtra, India
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