Structure
Not a diagram of dots on rings — a Monte-Carlo sample of the actual probability density |ψ|² for each occupied subshell. Drag to rotate. Blue and violet mark opposite signs of the wavefunction, which is what makes bonding possible.
Measured values
Every bar shows where tungsten sits among all 118 elements for that property.
Sources: IUPAC 2021 standard atomic weights · CRC Handbook of Chemistry and Physics · NIST. Values marked ~ are predicted rather than measured.
Size, to scale
Radius 146 pm — that is 0.146 nm, so about 3425 million of them side by side would span a millimetre.
Thermal range
Tungsten is liquid over a 2133 K window, from 3695 K to 5828 K.
The story
The highest melting point of any metal — 3,422 degrees C — and the filament of the incandescent age.
Tungsten's discovery reads like a scientific detective story spanning three centuries, involving mysterious Swedish minerals, Spanish chemists, and German metallurgists. The element's name literally means "heavy stone" in Swedish, hinting at the challenges early scientists faced.
Carl Wilhelm Scheele (Swedish chemist) discovered an unknown acid in the mineral scheelite. He realized this "tungstic acid" contained a new metallic element, but lacked the technology to isolate pure tungsten metal. Scheele's brilliant chemical intuition identified tungsten's existence 200 years before its first practical applications.
Juan José and Fausto Elhuyar (Spanish mineralogists) successfully isolated tungsten from wolframite ore in their laboratory at the Royal Seminary of Vergara. Working with samples from German mines, they used carbon reduction at extreme temperatures to produce the first metallic tungsten - tiny gray beads that would launch the modern tungsten industry.
"We have succeeded in obtaining the metallic substance of wolfram in a perfect state of purity" - Fausto Elhuyar, 1783
Confusion reigned over tungsten's name. Germans called it "wolfram" (wolf's foam) because it interfered with tin smelting like a ravenous wolf. Swedes preferred "tungsten" (heavy stone). Today, both names coexist: element symbol W honors wolfram, while English-speakers say tungsten.
William Coolidge at General Electric developed the process for making ductile tungsten wire, launching the age of electric lighting. This breakthrough required heating tungsten powder in hydrogen atmosphere, then mechanically working it into wire thinner than human hair - a process still used today.
Tungsten's 3,695°C melting point exceeded any furnace technology of the 1700s. Early chemists could only produce tungsten compounds, not pure metal. The invention of electric arc furnaces finally enabled large-scale tungsten production.
Pure tungsten is extremely brittle when cold, shattering like glass. Coolidge's breakthrough involved working tungsten at high temperatures and adding trace impurities to create ductile tungsten suitable for wire drawing.
Tungsten's complex chemistry confused early analysts. The element forms multiple oxidation states and colored compounds that masked its true identity. Systematic analytical chemistry finally revealed tungsten's unique properties.
The Elhuyar brothers could never have imagined their laboratory discovery would eventually power space missions, enable medical X-rays, and illuminate cities worldwide. Tungsten's journey from mysterious Swedish mineral to critical modern material spans over 200 years of scientific progress.
Tungsten's discovery established principles of high-temperature metallurgy and refractory materials science. The techniques developed to work with tungsten laid groundwork for modern aerospace, electronics, and nuclear technologies. Every incandescent bulb that ever glowed pays tribute to the Elhuyar brothers' pioneering work.
Applications
Tungsten reigns supreme in extreme temperature applications, with its extraordinary 3,695°C melting point making it central in modern technology. This remarkable metal literally keeps our world illuminated and powered.
Tungsten filaments transformed lighting for very long periods. While Edison's early bulbs used carbon, tungsten's discovery enabled the brilliant, long-lasting incandescent bulbs that lit the 20th century. Modern halogen bulbs still rely on tungsten's incredible heat resistance.
Hospital X-ray machines depend on tungsten targets to generate precise imaging radiation. Tungsten's ability to withstand intense electron bombardment makes it perfect for medical diagnostics, from dental X-rays to advanced CT scanners.
Rocket nozzles and spacecraft components use tungsten alloys to survive re-entry temperatures exceeding 2,000°C. NASA's space shuttles relied on tungsten-reinforced leading edges to safely return astronauts to Earth.
High-voltage electrical switches and circuit breakers use tungsten contacts because they resist welding under extreme electrical loads. From power grid infrastructure to automotive ignition systems, tungsten keeps electricity flowing safely.
Armor-piercing ammunition relies on tungsten's incredible density (19.3 g/cm³) and hardness. Tank-busting projectiles and kinetic energy penetrators use tungsten cores that can pierce the strongest armor at hypersonic speeds.
Tungsten carbide cutting tools can slice through hardened steel like butter. From drill bits mining deep underground to precision surgical instruments, tungsten carbide provides exceptional durability and sharpness that lasts 10x longer than steel tools.
Fusion reactors will depend on tungsten's plasma-facing materials to contain 100-million-degree temperatures. Space elevators may use tungsten-carbon composite cables, while quantum computers are exploring tungsten-based superconducting qubits operating at absolute zero.
A tungsten light bulb filament, thinner than human hair, operates at 2,500°C - hot enough to melt copper pennies instantly. Yet it glows for thousands of hours without failing, thanks to tungsten's incredible heat resistance.
Where it comes from
1.3 mg/kg of Earth's crust · more abundant than 53% of elements
Tungsten ranks among Earth's rarest elements, with an abundance of only 1.25 parts per million in the Earth's crust. To put this in perspective, tungsten is 100 times rarer than copper and 1,000 times rarer than iron.
(Fe,Mn)WO₄ - The main commercial source, forming dark crystalline masses in high-temperature veins. Found primarily in China, which controls 85% of global production.
CaWO₄ - White to yellow crystals that fluoresce brilliant blue under UV light. Major deposits in Australia, Peru, and the western United States provide this premium tungsten ore.
Iron-rich and manganese-rich varieties of wolframite found in Bolivia's legendary Llallagua mine and Colorado's historic mining districts.
Jiangxi Province's Dayu Mine and Hunan Province's Shizhuyuan Mine dominate world supply. China's tight export controls make tungsten a strategic metal.
Siberia's Tyrnyauz deposit in the Caucasus Mountains contains both tungsten and molybdenum in one of the world's largest polymetallic deposits.
Northwest Territories' Cantung Mine produces high-grade tungsten ore from one of the richest deposits outside China.
Colorado's Boulder County and California's Eastern Sierra contain historic tungsten mines that supplied America during both World Wars.
Tungsten concentrates in hydrothermal veins where superheated water (300-600°C) carries dissolved tungsten compounds deep underground. As the solution cools, tungsten precipitates with quartz, forming the characteristic "wolframite veins" that miners seek.
Most deposits form near granite intrusions where magma's heat drives the hydrothermal circulation that concentrates tungsten from trace amounts in surrounding rocks.
Tungsten's extreme hardness makes extraction difficult. Ore must be crushed to powder, then separated using magnetic and gravity techniques. The resulting concentrate requires high-temperature hydrogen reduction to produce pure tungsten metal - a process consuming enormous amounts of energy.
Tungsten's rarity and strategic importance led the U.S. to classify it as a "critical mineral." During WWII, tungsten was so valuable it was called "the metal that won the war" due to its use in armor-piercing ammunition and jet engines.
Handling
Pure tungsten metal is generally safe to handle with basic precautions. However, tungsten compounds and industrial processing require special safety measures due to dust inhalation risks and chemical toxicity.
Immediately flush with clean water for 15 minutes. Remove contact lenses if easily removable. Seek immediate medical attention for chemical exposure or metal fragments.
Remove contaminated clothing. Wash affected area with soap and water. For cuts from sharp tungsten, control bleeding and seek medical attention for deep wounds.
Move to fresh air immediately. If breathing is difficult, provide oxygen if available. Seek medical attention for persistent respiratory symptoms or suspected tungsten compound exposure.
Tungsten powder can be combustible when finely divided. Use dry sand or Class D fire extinguisher. Never use water on tungsten fires as it may cause violent reactions.
Store tungsten in dry, well-ventilated areas away from strong acids and oxidizing agents. Tungsten waste should be recycled when possible due to its strategic value. Dispose of tungsten compounds through licensed hazardous waste facilities following local regulations.
Quick answers
Tungsten (symbol W) is element 74 on the periodic table, a transition metal in period 6, group 6. The highest melting point of any metal — 3,422 degrees C — and the filament of the incandescent age. At room temperature it is a solid.
[Xe] 4f¹⁴ 5d⁴ 6s², giving 6 occupied shells holding 2, 8, 18, 32, 12, 2 electrons respectively.Tungsten melts at 3695 K (3421.9 °C) and boils at 5828 K (5554.9 °C). That puts it among the most refractory elements — it stays solid at temperatures that vaporise most metals.
The standard atomic weight of Tungsten is 183.84 u. That is a weighted average across its naturally occurring isotopes, which is why it is rarely a whole number.
Tungsten has a density of 19.25 g/cm³. Water is 1.0 g/cm³, so a block of tungsten is about 19.3× heavier.
Tungsten has a Pauling electronegativity of 2.36. The scale runs from 0.70 (francium, the least greedy for electrons) to 3.98 (fluorine, the most). Values in this middle band tend to form covalent rather than strongly ionic bonds.
Tungsten was discovered in 1783 by Juan Jose & Fausto Elhuyar. It is named after swedish tung sten, "heavy stone".
Tungsten makes up about 1.3 mg/kg of the Earth's crust — uncommon, but not rare.