Definition
A hard, dense metallic element with an extremely high melting point (around 3,400°C / 6,150°F), used in aviation for components that must withstand very high temperatures or carry heavy electrical current, such as light bulb filaments, electrical contact points in magnetos, and as a heavy material in balance weights.
Plain English
A very hard, very heavy metal that can handle extreme heat without melting. It shows up in aircraft wherever something needs to glow white-hot, take a lot of electrical sparking without burning away, or add concentrated weight in a small space.
Context Anchor
Seen in aircraft maintenance references for lamps, electrical parts, welding materials, and heat-resistant metal parts.
Derivation
From Swedish 'tung sten' meaning 'heavy stone' — a fitting name, as tungsten is one of the densest metals used in aircraft. Knowing this helps the pilot remember why it's chosen for balance weights: a small piece of tungsten weighs a lot.
Why Pilots Care
Tungsten contact points in older magnetos wear and pit over time, which is a common cause of magneto problems found during runup checks. Tungsten balance weights in control surfaces and propellers must stay secure — a lost weight can cause dangerous flutter or vibration.
Intuition Check
Do not think of tungsten as just another kind of steel. It is a separate metal, valued mainly because it is very dense and can withstand very high heat.
Example Sentence 1
The mechanic replaced the worn tungsten contact points in the magneto during the 500-hour inspection.
Example Sentence 2
The older instrument lighting used a tungsten filament that produced steady illumination.