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| >> GLOSSARY OF TERMS |
| L |
| LADLE ANALYSIS A term applied to the chemical analysis representative or in layers. To as reported by the producer. It is determined by analyzing a test ingot sample obtained during the pouring of the steel from a ladle |
| LAMINATIONS A defect appearing in sheets or strips as a segregation or in layers. To become divided, caused by gas pockets in the ingot (See Cold Shut). |
| LAP A surface defect appearing as a seam, caused by folding over hot metal, fins or sharp corners and then rolling or forging them into the surface but not welding them. |
| LAP-WELD A term applied to a weld formed by lapping two pieces of metal and then pressing or hammering, and applied particularly to the longitudinal joint produced by a welding process for tubes or pipe, in which the edges of the skelp are beveled or scarfed so that when they are overlapped they can be welded together. |
| LATTICE Space lattice. Lattice lines and lattice planes are lines and planes chosen so as to pass through collinear lattice points, and noncollinear lattice points, respectively. |
| LEAD ANNEALING (See Bath Annealing.) |
| LEVELING Flattening rolled metal sheet or strip (See Roller and Stretcher Leveling]. |
| LIGHT METALS Metals and alloys that have a low specific gravity, such as beryllium, magnesium and aluminum. |
| LITHOGRAPHIC SHEET ALUMINUM Sheet having a superior surface on one side with respect to freedom from surface imperfections and supplied with a maximum degree of flatness, for use as a plate in offset printing. |
| LONG TERNE A term applying to steel sheets that have been terne coated (Lead and Tin) by immersion in a bath of Terne Metal (See Terne Plate). |
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