constantan
Definition
- Noun:
- A specific metallic alloy: "Constantan" is a trademarked name for an alloy primarily composed of copper and nickel, known for its stable electrical resistance across a range of temperatures.
Usage
- As a material noun: "Constantan" is used to refer to the substance itself, typically in scientific, engineering, and manufacturing contexts.
- The thermocouple was made using constantan wire.
- Constantan is valued for its nearly constant resistivity.
Advanced Usage
- In instrumentation: Due to its stable properties, constantan is frequently used in precision electrical resistors, thermocouples (often paired with copper or iron), and strain gauges.
- The strain gauge's sensitivity relies on the predictable behavior of the constantan foil.
Variants and Related Words
- Eureka: An older, alternative name for the same or a very similar copper-nickel alloy.
- Alloy: A broader term for a metal made by combining two or more metallic elements.
Synonyms
- Copper-nickel alloy: A descriptive synonym, though it may not specify the exact proprietary composition.
- Resistance alloy: A functional classification for alloys like constantan used for their electrical properties.
Related Phrases/Compounds
- Constantan wire: Wire made from this alloy, used in electrical applications.
- They ordered a spool of constantan wire for the experiment.
Noun
-
an alloy of copper and nickel with high electrical resistance and a low temperature coefficient; used as resistance wire
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