There are 6 "strongest materials" on Earth that are harder than diamonds (2023)

Atomic and molecular configurations come in an almost infinite number of possible combinations, but the... [+]The specific combinations found in each material determine its properties. While diamonds are traditionally considered the hardest material on earth, they are not the strongest material in general, or even the strongest natural material. There are currently six types of materials that are known to be stronger, although this number is expected to increase over time.

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Carbon is one of the most fascinating elements in nature, with chemical and physical properties like no other element. With only six protons in its nucleus, it is the lightest and most abundant element capable of forming a series of complex bonds. All known life forms are based on carbon, since its atomic properties allow it to combine with up to four other atoms at the same time. The possible geometries of these bonds also allow carbon to self-assemble into a stable crystal lattice, especially under high pressures. When conditions are right, carbon atoms can form a solid, ultra-hard structure known as diamond.

Although diamonds are commonly known as the hardest material on earth, there are actually six materials that are the hardest. Diamonds remain one of the hardest and most abundant natural materials on earth, but these six materials top it.

Darwin's bark web is the largest spherical web produced by a spider on Earth, and... [+]Darwin's bark spider silk is the strongest of all types of spider silk. The longest single strand is 82 feet; A wire that goes all the way around the earth would weigh only 1 pound.

Carles Lalueza-Fox, Ingi Agnarsson, Matjaž Kuntner, Todd A. Blackledge (2010)

Grant: There are three earth materials that are not as hard as diamond, but are nevertheless very interesting for their resistance in a variety of ways. With the advent of nanotechnology, along with the development of understanding of modern materials at the nanoscale, we now realize that there are many different metrics for evaluating physically interesting and extreme materials.

From a biological point of view, spider silk is considered the most resistant. With a higher strength-to-weight ratio than most traditional materials like aluminum or steel, it also excels at being thin and sticky. Of all the spiders in the worldDarwin's bark spidersit has the toughest: ten times stronger than kevlar. It is so thin and light that about a pound (454 grams) of Darwin's bark spider silk would form a thread long enough to trace the circumference of the entire planet.

Silicon carbide, shown here after assembly, is usually found as small shards of natural material.... [+]The mineral moissanite that is produced. The grains can be sintered into beautiful and complex structures, as shown here in this material sample. Almost as hard as diamond, it has been synthesized synthetically and has been known naturally since the late 19th century.

Scott Horvath, USGS

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For a natural mineralSilicium carbide— occurs naturally in the form ofMoissanit- is only slightly less hard than diamond. (Still tougher than any spider web.) Grains of silicon carbide, a chemical mixture of silicon and carbon, which belong to the same family on the periodic table, have been mass-produced since 1893. They can be bonded together using a high-strength alloy. Low-temperature, pressured process known as sintering to produce extremely hard ceramic materials.

These materials are not only useful in a variety of applications that take advantage of toughness, such as automobile brakes and clutches, plating on body armor, and even armored battle armor suitable for tanks, but they also have semiconducting properties that are incredibly useful for their use in electronics.

Scientists have used ordered columnar arrays, shown here in green, as an advanced porous medium for... [+]separate different materials. By incorporating silica nanospheres here, scientists can increase the surface area used to separate and filter mixed materials. The nanospheres shown here are just one particular example of nanospheres, and the self-assembling variant is roughly comparable to diamonds in terms of material strength.

Oak Ridge National Laboratories / flickr

For the first time, tiny spheres of silicon dioxide have been produced that range in diameter from 50 nanometers to just 2 nanometers.about 20 years ago at the Department of Energy's Sandia National LaboratoriesWhat's remarkable about these nanospheres is that they are hollow, can self-assemble into spheres, and even nest inside each other while still being the hardest material known to man, only slightly less hard than diamond.

Self-assembly is an incredibly powerful tool in nature, but biological materials are weak compared to synthetic ones. These self-assembling nanoparticlescan be used to create custom materialswith applications ranging from better water purifiers to more efficient solar cells, from faster catalytic converters to cutting-edge electronics. However, the dream technology of these self-assembling nanospheres are printable bulletproof vests that are customized to the user's specifications.

Diamonds may be marketed as timeless, but like all diamonds, they have temperature and pressure limitations.... [+]other conventional material. While most terrestrial materials cannot scratch a diamond, there are six materials that are stronger and/or harder than these natural carbon networks in at least many ways.


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Diamonds are, of course, harder than all of these and still rank seventh on the all-time list of the hardest materials found or made on earth. Although they have been surpassed by other natural (but rare) and man-made synthetic materials, they still hold an important record.

Diamonds remain the most scratch resistant material known to man. Metals like titanium are significantly less resistant to scratches and even extremely hard ceramics or tungsten carbide cannot compete with diamonds in terms of hardness or scratch resistance. Other crystals known for their extreme hardness, such as rubies or sapphires, have still lagged behind diamonds.

But six materials surpassed even the much-vaunted diamond in hardness.

Just as carbon can be assembled in a variety of configurations, boron nitride can also be assembled.... [+]amorphous, hexagonal, cubic or tetrahedral (wurtzite) configurations. Boron nitride's structure in its wurtzite configuration is stronger than that of diamond. Boron nitride can also be used to build nanotubes, aerogels, and a variety of other exciting applications.

benjah-bmm27 / public domain

6.)Wurtzit-BornitratInstead of carbon, you can make a crystal out of any number of other atoms or compounds and one of them is boron nitride (BN), where elements 5 and 7 on the periodic table come together to form a multitude of odds. . It can be amorphous (not crystalline), hexagonal (similar to graphite), cubic (similar to diamond but slightly weaker), and wurtzite-shaped.

The last of these forms is extremely rare, but also extremely difficult. Formed by volcanic eruptions, it has only been discovered in trace amounts, which means that we have never experimentally tested its hardness properties. However, it forms a different type of crystal lattice, tetrahedral rather than face-centered cubic.That is 18% harder than diamond., according to the latest simulations.

Two diamonds from Popigai crater, a crater formed by the known cause of a meteorite impact. EITHER... [+]The object on the right (marked a) consists entirely of diamond, while the object on the left (marked b) is a mixture of diamond and small amounts of lonsdaleite. If Lonsdaleit could be made without impurities of any kind, it would be superior in strength and hardness to pure diamond.

Hiroaki Ohfuji and others, Nature (2015)

5.)Lonsdaleíta. Imagine you have a meteor full of carbon, and therefore containing graphite, flying through our atmosphere and colliding with planet Earth. While you can think of a falling meteor as an incredibly hot body, only the outer layers get hot; The interior remains cold for most (or possibly all) of its journey to Earth.

However, upon impact with the Earth's surface, the internal pressures become greater than any other natural process on the surface of our planet, causing the graphite to compress into a crystalline structure. However, it does not have the cubic lattice of a diamond, but a hexagonal lattice, which can reach 58% more hardness than diamonds. Although actual Lonsdaleit examples contain enough impurities to make them softer than diamonds, an impurity-free graphite meteorite hitting Earth would undoubtedly produce a material harder than any terrestrial diamond.

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This image shows a close-up of a rope made from LIROS Dyneema SK78 hollow-braid yarn. Safely... [+]In the kinds of application where cloth or steel cord would be used, Dyneema is the strongest fiber-like material known to human civilization today.

Justsail / Wikimedia Commons

4.)Dyneema. Next we leave the realm of natural substances. Dyneema, a thermoplastic polyethylene polymer, is unusual in that it has an exceptionally high molecular weight. Most of the molecules we know of are chains of atoms that add up to a few thousand atomic mass units (protons and/or neutrons). ButUHMWPE (for ultra high molecular weight polyethylene)it has extremely long chains with a molecular mass of millions of atomic mass units.

With very long chains for their polymers, intermolecular interactions are significantly improved, creating a very strong material. In fact, it is so strong that it has the highest impact resistance of any known thermoplastic.the strongest fiber in the world, and outperforms all mooring and towing lines. Although it is lighter than water, it can stop bullets and has 15 times the strength of a comparable amount of steel.

Micrograph of a deformed notch in a palladium-based metallic glass reveals extensive plastic shielding... [+]an initially sharp crack. Inset is a magnified view of a shear displacement (arrow) developed during plastic slip prior to crack opening. Palladium microalloys have the highest combined strength and hardness of any known material.

Robert Ritchie and Marios Demetriou

3.)Palladium Microalloy Glass. It's important to realize that there are two important properties that all physical materials possess: strength, which is the amount of force it can withstand before deforming, and toughness, which is the amount of energy it takes to break or break it. . Most ceramics are strong but not durable and will break if clawed or even dropped from a small height. Elastic materials like rubber can absorb a lot of energy, but they deform easily and are not hard at all.

Most glassy materials are brittle: strong but not particularly hard. Even reinforced glass like Pyrex or Gorilla Glass isn't particularly strong on the material scale. But in 2011, researchers developed a new five-element glass microalloy (Phosphorus, silicon, germanium, silverand palladium), where the palladium provides a pathway for shear banding, allowing the glass to plastically deform rather than fracture. It outperforms all grades of steel, as well as every other below it on this list, for its combination of toughness and toughness. It is the hardest non-carbon material.

Self-contained carbon nanotube paper, also known as buckypaper, prevents the passage of... [+]Particles 50 nanometers and larger. It has unique physical, chemical, electrical and mechanical properties. Although it can be bent or cut with scissors, it is incredibly strong. It is estimated that with perfect purity it can achieve up to 500 times the resistance of a comparable amount of steel. This image shows the NanoLab Buckypaper under a scanning electron microscope.


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2.)Buckypapier. It has been known since the late 20th century that there is a form of carbon that is even harder than diamond: carbon nanotubes. By joining carbon in a hexagonal shape, it can hold a rigid cylindrical structure more stable than any other structure known to man. If you take a bunch of carbon nanotubes and make a macroscopic sheet out of them, you can make a thin sheet out of them: Bucky paper.

Each individual nanotube is only 2 to 4 nanometers in diameter, but each one is incredibly strong and resilient. It is only 10% of the weight of steel.but it is a hundred times stronger. It is flame retardant, extremely thermally conductive, has tremendous electromagnetic shielding properties, and can lead to materials science, electronics, military, and even biological applications. ButBuckypaper cannot be made 100% of nanotubes, which perhaps keeps it away from the top spot on this list.

Graphene, in its ideal configuration, is a defect-free network of carbon atoms attached to a... [+]perfectly hexagonal arrangement. It can be seen as an infinite series of aromatic molecules.

AlexanderAlUS/CORE flickr materials

1.)graphics. Finally: a hexagonal lattice of carbon, a single atom thick. It is a sheet of graphene, possibly the most revolutionary material developed and used in the 21st century. It is the basic component of carbon nanotubes, and the applications are constantly expanding. Graphene is currently a multi-billion dollar industry and is predicted to grow to a multi-billion dollar industry in just a few decades.

The strongest material known for its thickness, it is an excellent conductor of heat and electricity, transmitting almost 100% of light. EITHERNobel Prize in Physics 2010went to Andre Geim and Konstantin Novoselov for pioneering experiments with graphene, and commercial applications have only increased. To date, graphene is the thinnest material known, and the gap of just six years between Geim and Novoselov's work and their Nobel Prize is one of the shortest in the history of physics.

The K-4 crystal consists entirely of carbon atoms arranged in a lattice, but with a... [+]unconventional bond angle compared to graphite, diamond or graphene. These interatomic properties can result in drastically different physical, chemical, and material properties, even with identical chemical formulas for a variety of structures.

Bit of work / Wikimedia Commons

The quest to make materials harder, stronger, more scratch resistant, lighter, stronger, etc., will probably never end. If humanity can push the limits of the materials available to us further than ever before, the applications of what becomes viable can only expand. Generations ago, the idea of ​​microelectronics, transistors, or the ability to manipulate individual atoms was certainly unique to science fiction. Today they are so common that we take them for granted.

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As we enter the age of nanotechnology in full force, materials like the ones described here become increasingly important and ubiquitous to our quality of life. It's wonderful to live in a civilization where diamonds are no longer the hardest known material; The scientific advances we make benefit society as a whole. As the 21st century progresses, we will all see what is suddenly possible with these new materials.


What materials are harder than diamond? ›

It is well-known since the late 20th-century that there's a form of carbon that's even harder than diamonds: carbon nanotubes. By binding carbon together into a hexagonal shape, it can hold a rigid cylindrical-shaped structure more stably than any other structure known to humankind.

What are the 5 hardest earth materials? ›

  • Diamond. Unmatched in its ability to resist being scratched, this much-loved gemstone ranks the highest in terms of hardness. ...
  • Graphene. ...
  • Spider silk. ...
  • Carbon/carbon composite. ...
  • Silicon carbide. ...
  • Nickel-based super-alloys.
Nov 23, 2010

What is the strongest material other than diamond? ›

Scientists have found a mineral stronger than diamond. They say lonsdaleite could be used to fortify industrial tools like drill bits and saw blades - AND teach us about the evolution of earth.

What stone is harder than a diamond? ›

That hexagonal structure makes the stone 58% stronger than regular diamonds. Lonsdaleite was found in a meteorite that scientists say came from a dwarf planet that was billions of years old. An asteroid crashed into that planet, releasing pressure that caused the stone to form.

What is the hardest material on earth? ›

Indeed, diamond is the hardest material in the world. Material hardness is a property determined by scratch resistance. A substance can only be scratched by something of equal or greater hardness. Therefore, only a diamond can scratch another diamond.

What is the 2 hardest material on earth? ›

Boron nitride

c-BN is chemically and thermally stable, and is commonly used today as a superhard machine tool coating in the automotive and aerospace industries. But cubic boron nitride is still, at best, just the world's second hardest material with a Vickers hardness of around 50 GPa.

What metal is stronger than diamond? ›

( -- Currently, diamond is regarded to be the hardest known material in the world. But by considering large compressive pressures under indenters, scientists have calculated that a material called wurtzite boron nitride (w-BN) has a greater indentation strength than diamond.

What is the strongest material on earth 2022? ›

Graphene is known as the strongest material on earth.

What's the strongest natural material? ›

The strongest natural material ever found is part of, surprisingly, a mollusc. Its name is Patella vulgata, or in everyday language, the common limpet. An edible sea snail found all around European coasts. The material in question is part of the 'teeth' with which the animal rasps over rocks in order to feed on algae.

What's the strongest material in the universe? ›

Summary: A team of scientists has calculated the strength of the material deep inside the crust of neutron stars and found it to be the strongest known material in the universe.

What stone is better than a diamond? ›

Moissanite has unparalleled sparkle! It has a higher refractive index than diamond, resulting in greater brilliance than diamond. Moissanite also has greater dispersion (fire) than a diamond, so you will notice more rainbow flashes of light.

What is the 2nd hardest material after diamond? ›

But cubic boron nitride is still, at best, just the world's second hardest material with a Vickers hardness of around 50 GPa. Its hexagonal form (w-BN) was initially reported to be even harder but these results were based upon theoretical simulations that predicted an indentation strength 18% higher than diamond.

Is titanium harder than diamond? ›

Titanium certainly is not stronger and harder than diamonds. Diamonds' strength ranges around 60GPa whereas titanium can be as low as . 434Gpa or Gigapascals. On the other hand, Diamonds can easily outrank titanium in the scale of hardness, it ranges about 98.07 Rockwell C whereas, titanium ranges around 36 Rockwell C.

Is diamond really the hardest material? ›

While diamonds may be the hardest naturally occurring substance found on earth, he explains, they are not the hardest available (there are two harder substances - a laboratory synthetic nanomaterial called wurtzite boron nitride and a substance found in meteorites called lonsdaleite).

What is the hardest stone on earth? ›

Diamond is the hardest natural material in the world.


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