Is Tantalum a Good Ring Material?

The choice of a man’s wedding ring is a very important task when it comes to marriage. Tantalum rings herald a combination of timelessness, lifestyle and individuality. Whether you are looking for a classic or unique wedding band, choosing the right metal is an integral part of the experience.

Men’s wedding bands on the market are made of gold, sterling silver, platinum, titanium and tungsten. However, another type of wedding band is on the rise: the tantalum ring.

If you are looking for a men’s engagement ring that is popular for its luster, durability and uniqueness, you may want to consider purchasing a wedding band made of tantalum.

Tantalum has recently emerged in the wedding ring industry, but tantalum is a hard, lustrous metal that has been used extensively in the industry since the 19th century. So, what is tantalum? Is it a reliable metal? Is this expensive? Is it better than titanium?

We’ll address all your questions in this complete guide to tantalum rings.

What is tantalum?

In its natural form, tantalum is a dense mineral that can be highly molded by heat or electricity, making it a great choice for industrial use. Tantalum has a deep, vivid color, darker than platinum. Because of its strength and utility, tantalum is a popular metal used in jewelry, including tantalum rings, bands and watches.

Tantalum has been around for centuries, but it has a vintage vibe that makes it unique in the jewelry market. For example, the name tantalum comes from the Greek mythological figure Tantalus. However, don’t let its ancient origins fool you. Tantalum is currently used in the field of energy, including capacitors and resistors.

The appeal of tantalum wedding rings is that they combine classic elegance with a modern, futuristic appeal. Tantalum rings are lightweight, masculine, strong, and unique. They are particularly resistant to corrosion because they are made of durable industrial materials.

Tantalum wedding rings are a unique variant that combines fluidity, aesthetics and industrial toughness.

Tantalum ring advantages

Tantalum’s durability: We keep trying again and again, and rings made of tantalum are durable.

Unlike tungsten, another popular men’s wedding ring, tantalum is shatterproof. A trustworthy and durable choice, tantalum is tough enough for those who work with their hands.

Appearance: Thanks to the metal’s natural luster, tantalum has a beautiful shine. Depending on your style, Tantalum rings are available in matte or polished finishes.

Tantalum is a pro-biological material, it is harmless and is often used in medical procedures and is safe for people with sensitive skin or those prone to allergic reactions.

Resizing: Can I resize my Tantalum ring? Yes. If your ring size changes, Tantalum will provide you with the option to easily resize your ring instead of replacing it. In contrast, both titanium and tungsten are difficult to resize.

Tantalum is easy to clean: Tantalum is very easy to maintain and does not require special cleaning by a professional jeweler. Simply wash with detergent-free soapy water to add a sparkling clean shine to rings and bands made of tantalum.

Are there any disadvantages to Tantalum wedding rings?

While tantalum wedding bands are a popular choice, there are still some drawbacks to consider.

For example, tantalum itself is a conflict metal. What does this mean? Well, according to the U.S. Geological Survey, about 10 percent of tantalum comes from a conflict mineral region in the Congo, where smuggling and exporting has created a serious crisis.

Tantalum contamination from dissolved particles to the earth’s fresh water and soil has also raised environmental concerns. But, as with other metals, including titanium and tungsten, the data is vague and contradictory.

Another drawback of tantalum rings is the lack of design versatility. Unlike the three metals (gold, silver and platinum), tantalum wedding bands are relatively new to men’s rings. This means that there are limited designs of tantalum wedding bands and wedding bands for men, and almost non-existent options for women.

Are these drawbacks enough to deter potential buyers from purchasing a tantalum wedding band? It depends on the buyer’s priorities, but there is no denying that the pros of tantalum rings may outweigh the cons.

Tantalum Rings

Tantalum is highly malleable, meaning it can withstand wear and tear without cracking or breaking. In fact, tantalum is practically shatterproof.

How much does a tantalum ring cost?

Tantalum rings are slightly more expensive than titanium or tungsten rings, and for good reason. Tantalum is a rare metal that makes up only 1-2 PPM (parts per million) of the earth’s crust.

Tantalum is a rare material and is therefore valued. In addition, tantalum rings are made with high-quality craftsmanship, which adds to the price and novelty of tantalum wedding bands.

Should I buy a tantalum ring?

At this point, this is a complete breakdown of tantalum rings and we hope we have answered all your questions in this guide. However, there is still the question, “Should I buy a tantalum ring?”

Ultimately, choosing a men’s wedding ring is a highly personal and subjective process. Only you can decide which ring is right for you.


Tantalum wedding bands are particularly attractive because tantalum is a rare metal. Tantalum rings are long-lasting, which means you don’t have to worry about delicate or fragile wedding bands. Tantalum wedding bands are timeless, durable, and unique.

What is 3D Printed Porous Tantalum?

The discovery of tantalum

Known as a “biophilic” metal, pure tantalum has been used in orthopedic medicine for more than 80 years. tantalum was discovered in ore by Swedish chemist Ekeberg in 1802 and named after Tantalus. tantalum was obtained in higher purity by the sodium reduction of Na2TaF7 by Rhodes in 1866.

porous tantalum

Subsequently, with its unique physicochemical properties and excellent biological inertness and biocompatibility, pure tantalum was first used in the field of orthopedics in 1940 and has been clinically used for 80 years, becoming another new biomaterial after titanium, which is widely used in oral implant placement, femoral head necrosis treatment, coronary artery stent placement, artificial acetabular prosthesis implantation, surgical suture production and other medical-related fields. A large amount of literature confirms that no adverse reactions have occurred with pure tantalum as human implants.

Biological and physicochemical properties of tantalum

1) Physical properties of tantalum

Pure tantalum is a gray, bright, hard metal with moderate hardness and good ductility, and can be drawn into tantalum wires thinner than a hair.

2) Mechanical properties

The difference between pure tantalum and the elastic modulus of bone tissue is large, which is not conducive to osseointegration. As a new type of orthopaedic implant material, porous tantalum has an interconnected internal structure and is interwoven longitudinally and horizontally. It has physical properties such as high porosity, low modulus of elasticity, and high surface friction coefficient.

In terms of mechanical properties, porous tantalum is superior to solid tantalum and other commonly used medical metal materials. Its special pore structure makes its elastic modulus between that of human cancellous bone and cortical bone, making it particularly suitable for bone replacement, joint replacement, and human tissue filling. It can provide mechanical strength while reducing stress shielding, facilitating stress transmission, facilitating bone shaping, and also has excellent osteoinductive properties, and is widely used in the field of orthopedics, and has achieved ideal results.

Compared with other porous materials, the friction coefficient of porous tantalum is 0.80 and 0.74 relative to the cancellous bone and cortical bone, respectively, which is 40% to 80% higher than that of traditional metallic materials. This helps to bond with the host bone interface and enhance the stability of the initial implantation.

3) Good corrosion resistance

At room temperature, tantalum will not react with hydrochloric acid, concentrated nitric acid or even aqua regia, and common inorganic salts will not corrode it. It is chemically extremely stable and resistant to all inorganic and organic acids except hydrofluoric acid, sulfur trioxide, hot concentrated sulfuric acid and alkalis.

4) Good biocompatibility

Unlike conventional medical metal materials, biological tissue grows on tantalum after a period of implantation, just as it does on real bone. This is why Tantalum is also known as a “pro-metal”.

5) Good bone bioactivity

The biologically active bone material interface is a hydroxyapatite layer rather than a connective tissue layer, and Tantalum itself has good bone bioactivity and stable biological inertness, which allows it to form a strong bone interface integration with bone.

Tantalum Applications

High clinical demand and large market size

The preparation of biocompatible bone scaffolds has been one of the hot topics of research in the medical field, and there are no less than 3 million cases of medical human bone implants in the USA every year, with prices reaching tens of thousands or even more than 100,000 yuan per case. According to EvaluateMedTech, orthopedic-related medical devices had global sales of $36.5 billion in 2017 and will reach $47.1 billion in 2024, with a compound annual growth rate of 3.7%.

Current orthopedic metal implant materials

The choice of medical human bone implant materials, the earlier application of materials are stainless steel, nickel-chromium alloy, nickel-titanium alloy, the last 2 or 3 years the trend is TC4 titanium alloy, these materials contain nickel, chromium, or aluminum, vanadium and other harmful elements, and because of its elastic modulus exceeds the human bone too much, the material and the human body affinity is low, prone to “bone non-stick “phenomenon. Medical experts and the market urgently need new non-toxic and non-hazardous new materials with good affinity to the human body to improve the current situation.

Porous tantalum advantages

(1) Perfect integration with the host bone interface: compared to the most commonly used titanium, tantalum is more biocompatible and has a better osseointegration capability.

(2) Unique bionic trabecular structure: Tantalum’s elastic modulus is closer to that of bone tissue, making it more suitable for bionic trabecular structure in the human body than other metals.

(3) Inducing rapid bone and vascular growth into It can promote the rapid growth of bone tissue and vascular tissue into the pores of porous tantalum, and its highly porous and supportive structure provides extensive space for bone growth, forming a good biological fixation, which can effectively solve the exothermic effect of bone cement and the impact on surrounding tissues, which is great clinical progress.

The above advantages make it show great clinical application value and application space in different sizes of orthopedic implants, and different parts of bone defects.

1) Application of porous tantalum in orthopedics

In clinical applications, porous tantalum printing can be applied to all small and medium-sized restorative products. For large-sized repair products, considering the high density of pure tantalum and the excessive weight of the printed implant prosthesis, multi-component gradient printing can be adopted, with porous tantalum used in the bone growing-in area and other metals such as titanium alloy, which is cheaper and lighter in quality, can be used in other areas.

With the continuous research on tantalum materials in recent years, several clinical trials have proven that new implants made of medical tantalum in combination with titanium and other metals can compensate for the shortcomings of other metal materials in terms of biocompatibility, bioactivity, and implant-bone bonding.

2) Tantalum coating – a new direction for orthopaedic applications

Tantalum metal has excellent corrosion resistance, and its coating on the surface of certain medical metal materials can effectively prevent the release of toxic elements and improve the biocompatibility of metal materials. Tantalum coatings meet the three elements of ideal bone graft materials, namely osteoconductivity, osteoconduction and osteogenesis, resulting in wider clinical applications and more flexible patient choices.

In addition, tantalum has also been used as an implant material in the restorative treatment of patients with missing teeth. Experiments have shown that conventional implants can absorb up to 30% of the loading energy during the loading process, while tantalum trabecular implants can absorb 50%-75%, which allows the implant to disperse the loading force to the surrounding bone during the long-term intraoral functional loading, avoiding stress concentration, while the higher friction coefficient provides good initial stability during implant placement, thus improving the dental implant bonding rate, especially in implant patients with poor bone quality.

The Ultimate Guide to Tantalum

Tantalum, a metallic element, is found mainly in tantalite and is symbiotic with niobium. Tantalum is moderately hard, ductile, and can be drawn into thin foil in the form of filaments. Its coefficient of thermal expansion is very small. Tantalum has excellent chemical properties and is extremely resistant to corrosion.

tracing tantalum

Although tantalum is highly resistant to corrosion, its corrosion resistance is due to the generation of a stable protective film of tantalum pentoxide (Ta2O5) on the surface. It does not react to hydrochloric acid or concentrated nitric acid, either under cold or hot conditions. It can be used to make evaporating vessels, etc. It can also be used as electrodes for electronic tubes, rectifiers, and electrolytic capacitors. It is also used in medical treatment to make thin sheets or threads to mend damaged tissues.


Chemical symbol Ta, gray metal, in the periodic table belongs to the VB group, atomic number 73, atomic weight 180.9479, body-centered cubic crystal, common chemical compound valence +5.

Tantalum was discovered by the Swedish chemist A.G. Ekeberg in 1802 and named tantalum after the Greek mythological figure Tantalus (Tantalus). 1903, the German chemist W. von Bolton prepared the first plastic metal tantalum for use as filament material. 1940, large-capacity tantalum capacitors appeared and were widely used in military communications.

In 1940, large-capacity tantalum capacitors appeared and were widely used in military communications. During the Second World War, the demand for tantalum increased dramatically, and after the 1950s, the demand for tantalum rose year by year due to its expanding applications in the capacitor, high-temperature alloy, chemical, and atomic energy industries, promoting the development of research and production of tantalum extraction processes.

The hardness of tantalum is low and correlates with the oxygen content; ordinary pure tantalum, in its annealed state, has a Vickers hardness of only 140 HV. It has a melting point of 2995°C and ranks fifth among the monomers, after carbon, tungsten, rhenium, and osmium. Tantalum is ductile and can be drawn into thin foils of the filament type. Its coefficient of thermal expansion is very small. It expands by only 6.6 parts per million per degree Celsius. In addition, it is very ductile, more so than copper.


Tantalum Chemical properties.

Tantalum also has excellent chemical properties and is extremely resistant to corrosion, not reacting to hydrochloric acid, concentrated nitric acid or “aqua regia” under both cold and hot conditions. However, tantalum can be corroded in hot concentrated sulfuric acid. Below 150°C, tantalum will not be corroded by concentrated sulfuric acid, but will only react above this temperature. At 250 degrees, the rate of corrosion increased to 0.116 mm per year, and at 300 degrees, the rate of corrosion was accelerated, and the surface was corroded by 1.368 mm after 1 year of immersion.

In the fuming sulfuric acid (containing 15% SO3) corrosion rate is more serious than in concentrated sulfuric acid, soaked in the solution at 130 degrees for 1 year, the surface is corroded by a thickness of 15.6 mm.

Tantalum is also corroded by phosphoric acid at high temperatures, but the reaction generally occurs at 150 degrees or more, and the surface is corroded by 20 mm when immersed in 85% phosphoric acid at 250 degrees for 1 year. In addition, tantalum can be rapidly dissolved in a mixture of hydrofluoric acid and nitric acid, and can also be dissolved in hydrofluoric acid. But tantalum is more afraid of strong bases.

In a caustic soda solution with a concentration of 40% at 110 degrees, tantalum will be dissolved rapidly, and in a potassium hydroxide solution with the same concentration, it will be dissolved rapidly for as long as 100 degrees.

Except for the above-mentioned cases, general inorganic salts generally cannot corrode tantalum below 150 degrees. Experiments have shown that at room temperature, tantalum does not react to alkaline solutions, chlorine gas, bromine water, dilute sulfuric acid, and many other agents, but only to hydrofluoric acid and hot concentrated sulfuric acid. This is a relatively rare occurrence among metals.


Tantalum has properties that make it very versatile. In equipment for the production of various inorganic acids, tantalum can be used as a replacement for stainless steel, with a life expectancy several dozen times longer than that of stainless steel.

In addition, in the chemical, electronic and electrical industries, tantalum can replace the tasks that used to be undertaken by the precious metal platinum, making the costs required much lower. Tantalum is manufactured into capacitors equipped into military equipment.

The United States has an exceptionally developed military industry and is the world’s largest arms exporter. Half of the world’s tantalum production is used in the production of tantalum capacitors, and the U.S. Department of Defense Logistics Agency is the largest owner of tantalum, having at one time bought out one-third of the world’s tantalum powder.



Tantalum is one of the rare metal mineral resources and is a strategic raw material indispensable for the development of the electronics industry and space technology.


Tantalum and niobium have similar physicochemical properties and are therefore co-occurring in minerals in nature. The classification of tantalum or niobium ore is mainly based on the content of tantalum and niobium in the mineral, which is called niobium ore when the niobium content is high and tantalum ore when the tantalum content is high.

Niobium is mainly used in the manufacture of carbon steel, super alloys, high-strength low-alloy steel, stainless steel, heat-resistant steel and alloy steel; tantalum is mainly used in the production of electronic primary devices and alloys.

Tantalum and niobium minerals are complex in form and chemical composition, which in addition to tantalum and niobium, often also contain rare earth metals, titanium, zirconium, tungsten, uranium, thorium, and tin.

The main minerals of tantalum are tantalite [(Fe, Mn)(Ta, Nb)2O6], heavy tantalite (FeTa2O6), fine crystal [(Na, Ca)Ta2O6(O, OH, F)], and black rare gold ore [(Y, Ca, Ce, U, Th)(Nb, Ta, Ti)2O6], etc. The waste residue of tin refining contains tantalum, which is also an important resource of tantalum.


Rare Watchmaking Metal – Tantalum

Within the world of watchmaking, there has always been an unquenchable thirst for material innovation. Over the past few decades, the arms race of the age of the new materials has given rise to countless alloys, each surpassing the others in terms of strength and durability.

Big Bang Tantalum

Technology continues to advance, prompting us to desperately tap into the potential of the periodic table of elements in search of the next exotic metal that can replace gold and titanium.

Today let’s learn about a new metal material for space: tantalum. Tantalum, a chemical element with the symbol Ta and atomic number 73, takes its name “Tantalum” from the Greek myth of Tantalus. With a core mass of 16.7 g/cm3, tantalum has a similar weight to 18-carat gold. A hard, blue-gray, rare transition metal, tantalum has a much harder surface than other metals used in watchmaking, such as stainless steel, gold and titanium. It is extremely resistant to corrosion.

Tantalum is a refractory metal with a melting point of 3017 °C (boiling point 5458 °C), only tungsten, rhenium, osmium, and carbon have a higher melting point than it. It is often used as a secondary component of alloys. Tantalum’s low chemical activity makes it resistant to acid corrosion, and it is even resistant to aqua regia at temperatures below 150 °C. It is a suitable substitute for platinum as a material for laboratory equipment. It has a characteristic blue color that lurks beneath a lustrous silver-tone, providing an invisible luster that no other metal, not even titanium, can achieve.

Tantalum’s unique physicochemical properties are what attract high-end luxury watches. Imagine a watch that is almost heavier than gold or platinum, with a distinctive blue/gray hue, while staying away from the exaggerated nature of gold. And with no signs of aging corrosion over the years! This rare space metal has so far only found its way into the product lines of a few fine watchmaking brands.

The use of tantalum in the watch industry

The body of an OMEGA watch is titanium, and the bezel and central double link of the watch are tantalum. The two metals are easier to distinguish: titanium is gray with a slight yellow tint, while tantalum is darker with a blue tint.

The Hublot Big Bang Tantalum has been a staple of Hublot’s line since its launch in 2005, and although it has been re-imagined in a dozen different material and color combinations, the Tantalum variant tops the list. The grey timepiece has a diameter of 44.5 mm, a case, lugs and bezel made of the rare metal tantalum, and a brushed dial that displays the time, date and chronograph functions. As with most Big Bang, Hublot seamlessly blends contrasting materials, combining a rustic, soft tantalum watch with a black rubber strap.

Girard-Perregaux Bi-Axial Tantalum & Sapphire Tourbillon Girard-Perregaux first introduced its lightweight titanium tourbillon biaxial tourbillon just one year after its tantalum case was born – a stunning hand-wound mechanical piece whose distinctive look defined it.

Can the Metal “Tantalum” be Used for Rings?

Can the metal “tantalum” be used for rings?

Yes, it can.

Tantalum is extremely resistant to corrosion and does not react to hydrochloric acid, concentrated nitric acid, or aqua regia in either cold or hot conditions.

tantalum rings

Tantalum’s pro-biological properties make it medically useful for making thin sheets or threads to mend damaged tissue. It is also harmless to the human body when made into rings and jewelry, and can be worn without worry.

Tantalum itself is harmless to humans and is as biophilic as silver, titanium, niobium, and other metals. However, tantalum and niobium may be mixed with rare earth elements during the smelting and extraction process, resulting in a little radioactivity, but pure tantalum is very safe.

Tantalum and niobium -a symbol of love?

Niobium and tantalum are in the same group in the periodic table and have very similar physical and chemical properties. In nature, they are often “inseparable”, like a pair of “twins”. When niobium and tantalum were discovered in the early 19th century, they were thought to be one element, and it was only after about 42 years that they were separated for the first time by chemical analysis, and it became clear that they were two different metallic elements.

Tantalum (Ta) niobium (Nb) are high melting point (tantalum 2996 ° C, niobium 2468 ° C), high boiling point (tantalum 5427 °C, niobium 5127 °C) rare metals, the appearance of steel-like, gray-white luster, powder dark gray, with gas absorption, corrosion resistance, superconductivity, unipolar conductivity and high strength at high temperatures, and other characteristics.

Therefore, the current tantalum niobium new material applications related to high-tech industrial fields include electronics, precision ceramics, and precision glass industry; electro-acoustic optical devices; cemented carbide, astronautics, and electronic energy industry; biomedical engineering; superconductivity industry; special steel and other industries.

Niobium-tantalum has good resistance to physiological corrosion and biocompatibility and does not interact with body tissues, so it is often used in the manufacture of bone plates, skull plate bone screws, dental implant roots, surgical appliances, etc. Tantalum is also known as a “biophilic metal” because it replaces bone in the human body with tantalum strips on which muscles can grow.

This is why they are also known as a “pro-biological metal”. Therefore, there are no allergies when using them for rings, and the price is better. Because tantalum is almost twice as dense as niobium, a tantalum ring of the same size will be more textured, darker in color, and more expensive than a niobium ring.

Because they have always coexisted in nature, we can also define them as a good brother or a loving couple, if you want to buy a pair of rings you can consider buying one each of tantalum and niobium, which has a better meaning!