Definition
A copper-zinc alloy with a high copper content (typically around 85% copper and 15% zinc) that gives it a reddish color. Red brass is corrosion-resistant and is used in aircraft for fuel and oil line fittings, hydraulic line fittings, and other plumbing components where strength and resistance to corrosion are required.
Plain English
A reddish-colored metal made mostly of copper mixed with a small amount of zinc. It resists rust and is used to make fittings and connectors for fuel, oil, and hydraulic lines on aircraft.
Context Anchor
Seen in aircraft maintenance and materials discussions, especially when identifying metals, tubing, fittings, or hardware materials.
Derivation
Called 'red' because the high copper content gives the alloy a reddish tint, distinguishing it from yellow brass, which has more zinc and appears more golden.
Why Pilots Care
Red brass parts resist corrosion from aviation fuels and hydraulic fluids, helping prevent leaks and failures in critical systems.
Intuition Check
Red brass is not brass that has been painted red. The red color comes from the metal mixture itself, mainly its higher copper content.
Example Sentence 1
The mechanic replaced the damaged fuel line fitting with a new red brass connector.
Example Sentence 2
During overhaul the mechanic replaced the worn red brass bushing in the throttle linkage.