Author: Scott Bredemann | Updated: 07/17/2025
Tungsten is one of the toughest and most heat-resistant materials used in manufacturing today. With a melting point over 6,000°F and a density comparable to gold, it’s uniquely suited for applications where other metals would fail. One of the most common uses is in tungsten carbide cutting tools, which are essential in CNC machining for cutting through hardened steel with minimal wear. You’ll also find tungsten in aerospace components, high-temperature molds, and electrical contacts—anywhere strength, heat resistance, and durability are critical.
What is Tungsten?
Tungsten is a dense, grayish metal with some of the most extreme physical properties of any element. On the periodic table, it’s represented by the symbol W, which comes from its other name, wolfram. It has an atomic number of 74 and belongs to the group of elements known as refractory metals—those that can withstand very high temperatures without melting or deforming. Tungsten’s melting point is the highest of any metal, at 3,422°C (6,192°F), and it’s incredibly hard, making it difficult to machine or shape without special tools.
Though it’s not commonly used in its pure form, tungsten is often combined with other elements to create hard materials like tungsten carbide or heat-resistant alloys. These forms are more practical for industrial use and are found in everything from cutting tools to punches and dies.
Where is Tungsten Found?
In nature, tungsten doesn’t appear in pure form. Instead, it’s found in ores like scheelite and wolframite, which are mined and then refined through a complex process to extract the metal. Most of the world’s tungsten is produced in China, but smaller sources exist in countries like Russia, Austria, and Portugal.
Physical Properties of Tungsten vs. Other Common Metals
When comparing metals for industrial use, understanding their physical properties—such as density, melting point, hardness, and thermal conductivity—is essential. Tungsten stands out among common engineering metals for having the highest melting point and one of the highest densities. Below is a table that compares tungsten’s key physical properties to those of other widely used metals, including steel, copper, titanium, nickel, and aluminum.
| Property | Tungsten (W) | Steel (Carbon) | Aluminum (Al) | Copper (Cu) | Titanium (Ti) | Nickel (Ni) |
|---|---|---|---|---|---|---|
| Density (g/cm³) | 19.3 | ~7.8 | 2.7 | 8.96 | 4.5 | 8.9 |
| Melting Point (°C) | 3,422 | ~1,370–1,540 | 660 | 1,085 | 1,668 | 1,455 |
| Boiling Point (°C) | 5,555 | ~2,800 | 2,470 | 2,562 | 3,287 | 2,913 |
| Hardness (Mohs) | 7.5 | ~4–8 (varies by alloy) | 2.75 | 3 | 6 | 4 |
| Thermal Conductivity | 174 W/m·K | ~50 W/m·K | 235 W/m·K | 401 W/m·K | 22 W/m·K | 90 W/m·K |
| Electrical Conductivity | 30% IACS (approx.) | 3–15% IACS | 61% IACS | 100% IACS | 3% IACS | 22% IACS |
| Tensile Strength (MPa) | 550–1,000+ | 400–2,000+ (varies) | 90–570 | 200–400 | 300–900 | 300–700 |
| Modulus of Elasticity | 411 GPa | ~200 GPa | 69 GPa | 110 GPa | 116 GPa | 200 GPa |
| Color | Grayish white | Silver-gray | Silvery-white | Reddish-brown | Silvery-gray | Silvery-white |
| Corrosion Resistance | Moderate (oxidizes at high temps) | Moderate to poor | Poor (oxidizes quickly) | Excellent (passive layer) | Good | Good |
Mechanical Properties of Tin vs. Other Common Metals
Compared to other metals like steel, which offers a balance of strength and flexibility, or aluminum, which is lightweight and ductile, tungsten behaves very differently under mechanical stress. The table below compares the mechanical properties of tungsten with other common metals used in manufacturing, highlighting how each material performs under pressure, impact, and repeated use.
| Property | Tungsten (W) | Steel (Carbon) | Aluminum (Al) | Copper (Cu) | Titanium (Ti) | Nickel (Ni) |
|---|---|---|---|---|---|---|
| Tensile Strength (MPa) | 550–1,000+ | 400–2,000+ (varies widely) | 90–570 | 200–400 | 300–900 | 300–700 |
| Yield Strength (MPa) | ~750 | 250–1,400+ | 35–500 | 70–210 | 275–830 | 59–350 |
| Hardness (Vickers) | 350–500+ | 100–800 (grade-dependent) | ~160 | ~50–100 | ~250–300 | ~100–250 |
| Fatigue Strength (MPa) | ~280–350 | 200–1,000 | ~100–200 | ~90–150 | ~200–600 | ~200–400 |
| Ductility (Elongation %) | 1–3% (very brittle) | 10–30%+ | 10–40% | 25–50% | 10–25% | 30–45% |
| Fracture Toughness (MPa·√m) | ~15–20 | 50–150 | ~30–40 | ~20–50 | 55–115 | ~60–120 |
| Shear Modulus (GPa) | 161 | ~80 | 26 | 48 | 44 | 76 |
| Poisson’s Ratio | 0.28 | 0.27–0.30 | 0.33 | 0.34 | 0.32 | 0.31 |
Chemical Properties of Tin vs. Other Common Metals
| Property | Tungsten (W) | Steel (Carbon) | Aluminum (Al) | Copper (Cu) | Titanium (Ti) | Nickel (Ni) |
|---|---|---|---|---|---|---|
| Corrosion Resistance | Moderate (oxidizes at high temps) | Low (prone to rust unless alloyed) | Good (forms passive oxide layer) | Poor (readily corrodes in moist air) | Excellent (forms stable oxide layer) | Good (especially in alloys) |
| Oxidation Behavior | Oxidizes above 400–500°C | Rapid oxidation in air if unprotected | Forms protective Al₂O₃ layer | Forms Cu₂O and CuO in air | Forms stable TiO₂ layer (self-healing) | Forms NiO slowly in air |
| Reaction with Acids | Resistant to most acids, except nitric + HF | Reacts with strong acids (HCl, H₂SO₄) | Dissolves in strong acids | Dissolves in nitric, sulfuric, hydrochloric | Excellent resistance; reacts slowly | Slowly reacts with acids at elevated temps |
| Reaction with Bases | Stable in alkalis | Usually stable | Amphoteric – reacts with strong bases | Generally stable | Resistant | Stable in alkalis |
| Passivation Tendency | Weak to none | None (unless stainless) | Strong – forms protective oxide | Weak – oxide offers little protection | Strong – self-passivating TiO₂ layer | Moderate – oxide forms slowly |
| Tarnish/Discoloration | Minimal in air at room temp | Tends to rust if untreated | Resists tarnish | Tarnishes to dull brown or green | Resists tarnish | Slight discoloration over time |
| Resistance to Chlorides | Poor – attacked by chlorides at high temp | Very poor – prone to pitting | Moderate to poor (especially in saltwater) | Poor (accelerated corrosion in chlorides) | Excellent – used in marine & biomedical apps | Good – resistant when alloyed |
| Toxicity/Bio-Compatibility | Low toxicity, but not biocompatible | N/A | Low toxicity | Low toxicity | Biocompatible – used in implants | Biocompatible – used in alloys |
Major Applications of Tungsten in Manufacturing
The fact that tungsten can withstand intense thermal and mechanical stress without deforming or melting, makes it ideal for high-temperature environments, cutting tools, and radiation shielding. It’s used in industries such as aerospace, electronics, defense, and mining, either in pure form or as part of an alloy or composite like tungsten carbide. The table below outlines the major applications of tungsten in manufacturing and explains why it’s the material of choice in each case.
| Industry | Application | Reason for Use |
|---|---|---|
| Aerospace | Rocket nozzles, engine components | Extremely high melting point and thermal resistance |
| Electronics | Filaments in light bulbs, X-ray tubes, electron emitters | High conductivity, thermal stability, and low vapor pressure |
| Defense & Military | Armor-piercing projectiles, kinetic energy penetrators | High density and hardness |
| Medical | Radiation shielding, medical imaging targets | Dense and radiation-absorbent |
| Manufacturing Tooling | Cutting tools, drills, dies, and molds | Exceptional hardness and wear resistance |
| Metallurgy | Alloying agent in tool steels and superalloys | Improves strength, wear resistance, and high-temp stability |
| Automotive | TIG welding electrodes, vibration damping weights | Heat resistance and density |
| Semiconductor | Gate electrodes, interconnects in microelectronics | High melting point, conductive, and stable in processing |
| Lighting | Vacuum tube components, halogen lamp filaments | High-temperature durability and minimal thermal expansion |
| Mining & Drilling | Carbide-tipped drill bits and cutters | Tungsten carbide is extremely hard and abrasion-resistant |
Looking at Tungsten, Tungsten Alloys, and Composites
Tungsten is used in three main forms in manufacturing: pure tungsten, tungsten alloys, and tungsten composites, each suited for different applications.
Pure tungsten offers the highest melting point of any metal and extreme density, making it ideal for high-temperature uses like furnace parts and filaments. However, it’s brittle and difficult to machine, limiting its use in structural components.
Tungsten alloys, which combine tungsten with metals like nickel or iron, improve ductility, machinability, and corrosion resistance while retaining high density. These are used in aerospace, defense, and medical applications such as radiation shielding and counterweights.
Tungsten composites, especially tungsten carbide, offer exceptional hardness and wear resistance, making them ideal for cutting tools, mining bits, and industrial wear parts. They are less ductile but extremely durable under mechanical stress.
In short, pure tungsten is best for heat, alloys for structural strength, and composites for extreme wear resistance.
Parting Thoughts
Understanding the properties and applications of metals like tungsten is essential across industries such as aerospace, machining, electronics, medical imaging, and materials science. Whether you’re selecting materials for high-heat environments, designing wear-resistant tools, or developing components that require exceptional strength and stability, knowing the characteristics of tungsten can lead to better engineering and performance outcomes. Here are a few examples of tungsten alloy and tungsten carbide products that MISUMI USA carries:
Tungsten Alloy Lathe Groove TAC Tip
MISUMI USA provides a broad selection of metal materials and components—both standard and configurable—including rods, plates, and blocks in various metals. If you’re unsure which material best fits your design requirements, our technical support team can assist. For more detailed resources, be sure to check out our other materials-focused guides and engineering tables.
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The content on this webpage is for informational purposes only. MISUMI makes no guarantees, expressed or implied, regarding the accuracy, completeness, or validity of the information. Performance parameters, tolerances, designs, materials, or processes should not be assumed to reflect third-party suppliers’ or manufacturers’ deliverables within MISUMI’s network. Buyers are responsible for specifying their part requirements