Glossary |
Boiler and boiler tube industry terms and their definitions.
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| Nitriding | "A process of case hardening in which a ferrous alloy, usually of special composition, is heated in an atmosphere of cracked ammonia or in contact with nitrogenous material to produce surface hardening without quenching by the absorption of nitrogen. Nitriding is normally conducted in a range from 900 to 1000F." |
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| Non-Destructive Testing | "Methods of detecting defects without destroying or permanently changing the material being tested. Test methods include ultrasonic, eddy current, flux leakage, magnetic particle, liquid, penetrant, and X-ray." |
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| Notch Brittleness | Susceptibility of a material to brittle fracture at points of stress concentration. |
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| Notch Sensitivity | A measure of the reduction in strength of a metal caused by the presence of stress concentration. |
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