| Feeding Systems | materials (powders and preformed shapes) that either exotherm or insulate to extend and control the solidification time of the cooling metal |
| Ferroalloys | any of various alloys of iron and one or more other elements, such as manganese, chromium, phosphorus or silicon, often used as a raw material in the production of steel and its alloys |
| Flux Products | A chemical (usually in powder or granule form) which is added to liquid metal in a furnace or ladle to promote fusing and/or cleaning, or to prevent the formation of oxides |