Click on the alphabetic index to display terms beginning with the corresponding letter or search for a term below.


A hard supersaturated solid solution of iron characterised by an acicular (needle-like) microstructure.


A small category of magnetic steels typically containing 12% chromium, a moderate level of carbon, and a very low level of nickel.

Mechanical Properties

Physical properties of a material concerning its elasticity when force is applied, particularly stress and strain.


Semi-permeable barrier made of connected strands of steel.

Metal Dusting

An extreme breakdown of a metal due to exposure to a carbonaceous gas at an elevated temperature.

Metric Ton

Metric Ton: 1,000 kilograms. (2,204.6 pounds or 1.102 short tons).


Steel mills that melt scrap metal to produce commodity products. They have the same production requirements as integrated mills, but they utilise different labour relations, minimum size, product markets, etc.

Molybdenum (Mo)

An alloying element that enhances corrosion resistance along with chromium in stainless steels.

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