Glossary |
Boiler and boiler tube industry terms and their definitions.
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| Impact Testing | "There are several methods of determining the toughness of a steel, but the Izod and Charpy notched-bar tests are used quite widely. In both tests, the samples are cooled or heated to the desired test temperature, then struck once with a pendulum which fractures the specimen. The energy required to fracture the specimen, the impact strength, is measured in foot-pounds." |
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| Inclusions | "Particles of nonmetallic impurities, usually oxides, sulfides, silicates, which are mechanically held in metals and alloys during solidification." |
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| Induction Heating | A process of heating by electrical induction. |
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| Ingot | A cast metal shape suitable for subsequent rolling or forging. |
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| Ingot Mold | "A mold in which ingots are cast. Molds may be circular, square, or rectangular in shape, with walls of various thicknesses. Some molds are of larger cross section at the bottom: others are larger at the top." |
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| Integral Finned Tubing | Tubing with raised surface fins formed from the wall of the tube itself. |
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| Intergranular Corrosion | "A type of electrochemical corrosion that progresses preferentially along the grain boundaries of an alloy, usually because the grain boundary regions contain material anodic to the central regions of the grain." |
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| Internal Soundness | "Refers to condition of inside of material lack of defects, pipe, segregation, non-uniformity of composition." |
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| Isothermal Anneal | See heat treatment. |
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| Izod Impact Test | See Impact Strength Testing. |
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