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| >> GLOSSARY OF TERMS |
| F |
| FACE CENTERED (concerning cubic space lattices) - Having equivalent points at the corners of the unit cell and at the centers of its six faces. A face-centered cubic space lattice is characteristic of one of the close- packed arrangements of equal hard spheres. |
| FATIGUE The phenomenon leading to fracture under repeated or fluctuating stress. Fatigue fractures are progressive beginning as minute cracks and grow under the action of fluctuating stress. |
| FERRO-MANGANESE An alloy of iron and manganese (80% manganese) used in making additions of manganese to steel or cast-iron. |
| FERROALLOY An alloy of iron with a sufficient amount of some element or elements such as manganese, chromium, or vanadium for use as a means in adding these elements into molten steel. |
| FERROUS Related to iron (derived from the Latin ferrum.) Ferrous alloys are, therefore, iron base alloys. |
| FIBER OR FIBRE Direction in which metals have been caused to flow, as by rolling, with microscopic evidence in the form of fibrous appearance in the direction of flow. |
| FIBER STRESS Unit stress which exists at any given point in a structural element subjected to load; given as load per unit area. |
| FILED EDGES Finished edges, the final contours of which are produced by drawing the strip over a series of small steel files. This is the usual and accepted method of dressing the edges of annealed spring steel strip after slitting in cases where edgewise slitting cracks are objectionable or slitting burr is to be removed. |
| FINISHED STEEL Steel that is ready for the market without further work or treatment. Blooms, billets, slabs, sheet bars, and wire rods are termed ?semi finished." |
| FINISHING TEMPERATURE Temperature of final hot-working of a metal |
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