Glossary |
Boiler and boiler tube industry terms and their definitions.
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| Random Length | Tubing produced to a permissible variation in length. (Frequently seven feet.) |
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| Recrystallization | "The reversion of distorted cold worked microstructure to a new, strain-free structure during annealing." |
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| Reduction of Area | "A measure of ductility determined in a tensile test. It is the maximum reduction, at the fracture, of the cross section area of a specimen, as compared with its original cross section area." |
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| Rimmed Steel | A steel which forms a relatively clean outer layer (rim) during solidification. Sheet and strip made from such steel has good surface quality and is frequently used for ERW tubing. |
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| Rockwell Hardness | See hardness. |
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| Roto-Rock (Tube Reducing or Rockrite) | A method of cold finishing tubing in which a machine rolls or rocks a split die over a tube. The tube is supported on the inside by a tapered mandrel. |
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