How Rare is Titanium and How Much is it Worth? An In-Depth Guide

Titanium is an important industrial metal that lies somewhere between base and precious metals in rarity. Let‘s take an in-depth look at titanium‘s abundance, properties, supply and demand, pricing, and outlook.

How Rare is Titanium Compared to Other Metals?

Although titanium is not as rare as gold or platinum, it is substantially rarer than common metals like aluminum, iron, and copper.

• Titanium makes up just 0.63% of the Earth‘s crust, compared to aluminum at 8.1% and iron at 5.6%.

• It is the 9th most abundant element, making it relatively rare. For perspective, gold concentrations are around 0.004 parts per million – over 100,000 times rarer than titanium!

So while titanium is no precious metal, it is over 10 times less common than everyday metals like aluminum and copper. This relative rarity makes titanium more difficult to source than base metals.

Abundance and Mining of Titanium Ores

The two main minerals mined for titanium production are ilmenite (FeTiO3) and rutile (TiO2). Let‘s look at where they are found and mined.

Ilmenite

Ilmenite ore contains only 40-60% TiO2, but makes up a majority of titanium production due to its abundance.

• Main deposits are beach sand rich in ilmenite like eastern Australia, Gulf of Mannar in India, South African coast.

• Norway, China, and Canada also mine ilmenite-containing igneous rocks.

• Ilmenite is converted to titanium dioxide pigment or melted to produce titanium metal.

Rutile

With 95% or more TiO2, rutile is a higher grade but less abundant ore.

• Australia produces around 50% of the world‘s rutile. Other major sources include South Africa, India, and Sierra Leone.

• Rutile is processed into titanium metal powder as well as welding rod coatings.

• Recent discoveries in Africa and Australia are making rutile a larger share of titanium feedstock.

How is Titanium Metal Produced?

The Kroll Process is the primary method for extracting titanium metal from ore. Here are the key steps:

1. Chlorination – The ore is reacted with chlorine gas at over 1000°C to produce titanium tetrachloride (TiCl4).

2. Purification – Impurities are removed from the TiCl4 through distillation and chemical treatments.

3. Reduction – TiCl4 is reacted with magnesium or sodium to produce titanium metal sponge and chloride salts.

4. Melt Purification – The porous sponge is melted in a vacuum vessel to remove residual chlorides and produce ingots.

5. Alloying – Alloying elements like aluminum, vanadium, and molybdenum are added to improve properties.

The reduction and melt purification steps are very energy intensive, which contributes to titanium‘s higher costs.

How Much Titanium is Left in the World?

The world has abundant titanium resources that should last for centuries at the current production rate of around 200,000 tons per year:

• The USGS estimates total titanium reserves exceed 2 billion metric tons containing titanium.

• Identified resources are located primarily in China, Australia, India, South Africa, Canada, Norway, and the U.S.

• At 2020 mining levels, known reserves represent over 100 years of supply. Additional deposits will likely be discovered as demand increases further.

Here is a table summarizing titanium reserves by country:

Country	Reserves (millions of tons)	Share of World Reserves
China	760	35%
Australia	410	19%
India	220	10%
South Africa	144	7%
Canada	100	5%
Other Countries	540	25%
Total	2,174	100%

So while titanium is rarer than other metals, there are ample resources to supply current and future demand. Recycling titanium scrap also supplements new ore supply.

What Makes Titanium Useful and Valuable?

Titanium gets significant value from its outstanding combination of properties, including:

• High strength-to-weight ratio – As strong as steel but 45% lighter, ideal for aircraft and space applications. Its tensile strength is around 900 MPa compared to 400 MPa for aluminum.

• Corrosion resistance – Extremely durable exterior oxide prevents corrosion and rust.

• Heat resistance – Titanium alloys retain strength up to 600°C, useful for turbines and engines where aluminum would fail.

• Biocompatibility – Non-toxic and not rejected by the human body, allowing diverse medical implants like joint replacements.

• Ductility, toughness – Titanium alloys can be fabricated into complex shapes. The alpha alloys are more ductile while beta alloys are tougher.

This unique balance of properties makes titanium indispensable for key industries like aerospace, medical, marine, and power generation. Demand continues growing as new high-performance applications are developed.

What are the Drawbacks of Titanium?

Despite its strengths, titanium does have some limitations:

• More expensive than steel – Titanium alloy parts can cost up to 5 times more than steel.

• Difficult machinability – Slow cutting speeds and constant lubrication required. Ti-6Al-4V machines much better.

• Loses strength above 400°C – Better alloys like Ti-6-2-4-2 can take higher temperatures.

• Susceptible to hydrogen embrittlement – Hydrogen absorbed during processing can make titanium brittle. Careful design prevents this issue.

• Risk of fire – Titanium powder is flammable. Care must be taken when machining swarf and fines.

Engineers select titanium where its properties justify the higher price over steel, nickel alloys, or aluminum.

How Do Titanium Prices Compare to Other Metals?

On commodity markets, titanium prices are above aluminum and nickel but below more scarce metals:

• More expensive than iron at $0.08/lb, copper at $3.50/lb, and aluminum at $1.00/lb.

• Lower prices than silver at $840/lb, platinum at $37,500/lb, and rhodium at $18,000/lb.

• Similar pricing to tungsten at $20/lb, another high-strength metal.

So titanium is priced firmly between common base metals and precious metals reflecting its intermediate rarity.

What are Current and Historical Titanium Prices?

• Current pricing – January 2023 saw titanium sponge around $5/lb and scrap at $0.35/lb.

• 10 year range – Over the past decade, titanium sponge prices ranged from a low of $3.70/lb in 2016 up to $9.00/lb in 2014.

• Long term rise – In the 2000s, titanium sponge averaged $7/lb which was triple the price a decade earlier. New demand steadily drove growth.

Here is a chart showing how titanium sponge prices have moved over the past 10 years:

Prices peaked around 2012-2014 due to strong aerospace demand before declining with increasing supply. The future outlook is for stable pricing with potential increases as the airline industry recovers.

Which Industries Use the Most Titanium?

Here are some of the major applications for titanium metal and alloys:

• Aerospace – Jet engines, airframes, hydraulic systems where high strength and low weight are critical.

• Medical – Implants like knee and hip joints, plates, screws and pins. Over 2 million titanium-based implants performed annually.

• Chemical processing – Heat exchangers, pipes, and tanks needing corrosion resistance to acids and chlorides.

• Marine – Submersibles, offshore rigs and pipes where seawater corrosion is an issue.

• Sporting goods – Golf clubs, bicycles, lacrosse sticks, hockey sticks, and more benefit from titanium‘s strength and low density.

• Consumer products – Jewelry, watches, smartphones, laptops use titanium for durability, scratch resistance, and appearance.

• Power generation – Condensers and heat exchangers in nuclear, coal, and solar electricity plants.

There are few materials that can match titanium‘s combination of corrosion resistance, specific strength, and biocompatibility that allow it to excel in these diverse fields.

Will Recycling Impact Titanium Supply?

Recycling titanium is critical for supply security and environmental benefits. Here are some key facts about titanium recycling:

• Titanium scrap accounts for around 35% of total supply to the industry. The rest comes from newly mined ore.

• 95%+ of titanium scrap is estimated to be recycled. Aerospace has over 90% recycling rates.

• Recycling titanium cuts energy use by over 90% compared to primary production.

• Processes like vacuum arc melting purify and consolidate titanium scrap into solid ingots.

• Closed loop recycling within industries like aerospace keeps material in use.

With increasing efficiency, recycling will continue displacing a portion of the demand for mined titanium. Government and industry initiatives promote recycling to stabilize costs and reliance on imports.

Conclusion: Titanium is Rare but Useful

In conclusion, titanium is considered a rare metal, but its unique properties make it more valuable than its relative rarity alone would dictate. The combination of high strength, low density, corrosion and heat resistance, and biocompatibility make titanium indispensable for aerospace, medical implants, and other advanced applications.

While more costly than common metals, titanium is far more affordable than precious metals and provides capabilities beyond steel and aluminum. Thanks to extensive reserves and recycling, there is sufficient titanium to supply growing demand for this strategically important material.