| Magnesium Ferrosilican | a ferroalloy used in the production of ductile iron which acts as a nodulariser, changing the metallurgical structure to encourage the required mechanical properties |
| Metallurgical Chemicals | any of a wide group of chemicals which can be used in any of the metallurgical processes i.e. alloying elements, resin binders, fluxes etc |
| Microsilica | a fine-structured form of a non-metallic naturally occurring material (oxide of the element silicon), used in combination with other materials in glass, concrete, brick and refractories |
| Mould Flux | synthetic granular or powder product used to cover the liquid steel surface in the continuous casting mould for the purposes of lubrication, insulation and inclusion (impurity) removal |