phosphor-bronze
Definition
Noun (countable and uncountable): - A type of bronze alloy that contains a small amount of phosphorus (typically 0.1–0.5%), which increases its hardness, strength, and resistance to wear and corrosion. It is often used for springs, electrical contacts, and bearings.
Usage Examples
- (A specific bronze alloy with phosphorus added.)
- (A common material for musical instrument strings.)
Advanced Usage
"Phosphor-bronze as a bearing material": In mechanical engineering, phosphor-bronze is valued for its low friction and ability to withstand heavy loads.
- The ship's propeller shaft was lined with phosphor-bronze bearings to reduce wear. (Used in a specific technical context.)
"Phosphor-bronze in electrical applications": Due to its good conductivity and corrosion resistance, it is used for electrical connectors and switch parts.
- The relay contacts were made of phosphor-bronze to ensure reliable current flow. (Used in electronics.)
Variants and Related Words
- Phosphor bronze (alternative spelling): The same alloy, sometimes written as two words.
- The term "phosphor bronze" is often used interchangeably with "phosphor-bronze." (A spelling variant.)
- Bronze (n): a general alloy of copper and tin, without phosphorus.
- Standard bronze is softer than phosphor-bronze. (A related but distinct material.)
Synonyms
- Phosphorus bronze: A more descriptive term for the same alloy.
- Phosphorized bronze: An older technical term for the same material.
Related Idioms
- "Not your average bronze": An informal phrase to emphasize the superior qualities of phosphor-bronze.
- This spring is made of phosphor-bronze — not your average bronze. (It is stronger and more durable.)
Notes on Composition
- The phosphorus in phosphor-bronze acts as a deoxidizer during casting, reducing porosity and improving the alloy's mechanical properties. Typical composition: copper (90–96%), tin (4–10%), and phosphorus (0.1–0.5%).