Επένδυση στο Αλουμίνιο: Το Μέταλλο του Μέλλοντος

Αλουμίνιο 101

Μια Σύντομη Ιστορία του Αλουμινίου: Από Πολυτελές Μέταλλο σε Παγκόσμιο Εμπορεύσιμο

Some metals have evolved over time from rarity to a commodity. This is definitely the case with aluminum, which was discovered in its metal form only in 1825, despite being the most abundant metal in the Earth’s crust, even more common than iron.

It was previously used in an unrefined form (alum) for dying fabrics and as a deodorant.

The difference with iron is that aluminum is extremely difficult to refine, requiring extremely high temperatures. As a result, it was initially more precious than gold and used only as a luxury metal for jewelry and cutlery.

Λέγεται ότι ο Ναπολέων παρέθεσε ένα συμπόσιο στο οποίο οι πιο τιμώμενοι καλεσμένοι χρησιμοποίησαν σκεύη από αλουμίνιο, ενώ οι υπόλοιποι αρκέστηκαν σε χρυσά.

A man from Ohio, Charles Martin Hall, ανέπτυξε τη διαδικασία ηλεκτρόλυσης αλουμινίου στο ξυλουργικό του οικογενειακού του σπιτιού το 1886, patented the invention, and helped found the company that would later become Alcoa.

Πηγή: Today In Science

Σύμφωνα με τον θρύλο, ο Franck Jewett, ο οποίος είχε διοριστεί καθηγητής χημείας και ορυκτολογίας στο Oberlin το 1880, έδειξε στους φοιτητές του ένα κομμάτι αλουμινίου και δήλωσε ότι «όποιος ανακαλύψει μια διαδικασία με την οποία το αλουμίνιο θα μπορεί να παράγεται σε εμπορική κλίμακα, θα ευεργετήσει την ανθρωπότητα και θα δημιουργήσει μια περιουσία για τον εαυτό του».

This invention started the industrial-scale production of aluminum, quickly decreasing production costs.

In 1886, aluminum was costing $6/pound. In 1891, it had fallen to $1/pound. When a lightweight aluminum crankcase for their engine enabled the Wright Brothers to take their famous first flight in 1903, the metal was about $0.30 per pound.

Today’s price is barely above $1.15/pound, a remarkable continuous decrease in price throughout the 20th century, considering inflation over more than a hundred years.

Πώς Παράγεται το Αλουμίνιο: Από τον Βασίτη στην Αλουμίνη και στο Μέταλλο

Processing bauxite uses electricity to remove the oxygen atom from aluminum oxide (also called alumina), producing pure aluminum metal through electrolysis.

Alumina itself (Al2O3) is produced from aluminum ore (called bauxite), which contains a mix of aluminum compounds like gibbsite (Al(OH)3), boehmite, and diaspore (AlO(OH)), as well as other impurities and minerals. Two to three tons of bauxite are required to produce a ton of alumina.

Πηγή: Mineral Auctions

Turning bauxite into alumina is a relatively simple process, called the Bayer Process, invented in 1887 by Carl Josef Bayer, and is still the method used today:

1. Ο βασίτης θρυμματίζεται, στη συνέχεια διαλύεται σε καυστικό σόδα (NaOH).
2. Το μείγμα καθαρίζεται για την αφαίρεση των ακαθαρσιών.
3. Η υπόλοιπη λύση τοποθετείται σε δεξαμενή και προκαλείται η κατακρήμνιση.
4. Το τελικό προϊόν πλένεται και θερμαίνεται για την αφαίρεση της υπολειπόμενης καυστικής σόδας και του νερού.

Παγκόσμια Επισκόπηση Αγοράς Αλουμινίου

Πού Παράγεται το Αλουμίνιο; Κορυφαίοι Παγκόσμιοι Παραγωγοί

Aluminum, the most abundant metal element on Earth, is hardly a rare resource, with large deposits on every continent.

Πηγή: US Geological Survey

However, as aluminum production is a very energy-intensive process requiring a lot of electricity, as well as massive and capital-intensive plants, its production is less evenly distributed.

China is by far the largest producer, responsible for almost 60% of global production in 2024. The other large producers are India, Russia, North America, and the Arab Gulf countries.

The largest producer per capita is Iceland, where abundant hydro and geothermal energy is used for aluminum production. Three aluminum smelters consume 80% of the country’s energy production.

Πηγή: International Aluminum

By far, the largest energy source for aluminum production is hydropower, thanks to its low costs and high reliability/dependability, followed by coal for the same reasons. The high reliability is crucial, as crucibles for aluminum smelting must never cool down and solidify, which would destroy them.

Πηγή: International Aluminum

Πρόβλεψη Ζήτησης Αλουμινίου και Κύριοι Παράγοντες Μέχρι το 2030

Η μεγαλύτερη ζήτηση για αλουμίνιο προέρχεται επίσης από την Κίνα, η οποία αντιπροσωπεύει το 60% της παγκόσμιας ζήτησης. Η τεράστια βιομηχανική παραγωγή της τροφοδοτεί την ανάγκη της για το ασημί μέταλλο. Ακολουθούν οι ΗΠΑ (7% της παγκόσμιας ζήτησης), η Γερμανία (3%), η Ιαπωνία (3%) και η Ινδία (2%).

Πηγή: Industry Australia

Η παγκόσμια ζήτηση αλουμινίου αναμένεται να αυξηθεί κατά 40% μέχρι το 2030, in large part driven by green energies, electrification, and demand for lightweight materials.

Τι Οδηγεί τις Τιμές του Αλουμινίου; Τάσεις και Ανάλυση

Aluminum prices tend to follow the overall health of the global economy, with recessions driving a dip in demand and overcapacity.

Prices have been overall high since 2021, but are currently lower than the latest spike in Μάρτιος 2022.

Πηγή: Federal Reserve Bank of Saint-Louis

Local prices might also differ from global prices, depending on local supply and demand conditions. Beside overall global economic activity, the price of aluminum also fluctuates with the price of energy, which explains partially the high point it reached in 2008.

Πώς οι Δασμοί Επηρεάζουν την Αγορά Αλουμινίου

Aluminum production is a politically and geopolitically sensitive topic as a key industrial and strategic metal, including for aerospace applications. Recently, the second Trump administration launched a wave of 25% tariffs against all aluminum and steel imports.

The USA is a major aluminum importer, with most of its imported supply coming from Canada.

Πηγή: Mining.com

This caused a split in local prices, with the price of aluminum declining in London and rising in the USA.

Πηγή: Alcoa

Η Κυριαρχία της Κίνας στα Σπάνια Στοιχεία και στη Διύλιση Αλουμινίου

It is well known that China is a major producer of rare earth elements (98% of global production), which gives it a decisive advantage in green energies, as well as makes it a key supplier for these metals required for advanced technologies, form missiles to semiconductors.

It is, however, less known that a key element of China’s control of this market is its strong presence in aluminum refining.

The Chinese government mandates by law that all aluminum refiners also purify rare earth elements contained in the bauxite and alumina ore, something not required for other aluminum producers.

So, while aluminum prices are the key driver of profits for aluminum smelters, it is possible that in the future, non-Chinese aluminum producers will be mobilized by their respective governments to reduce dependency on rare earth element imports and be treated as strategic assets.

Πώς Χρησιμοποιείται το Αλουμίνιο: Κύριες Εφαρμογές σε Διάφορους Κλάδους

Γιατί Προτιμάται το Αλουμίνιο: Ιδιότητες και Πλεονεκτήματα

90.9 million tons of aluminum were produced in 2024, exceeding any other metal production except for iron.

Πηγή: Visual Capitalist

Aluminum is almost always alloyed (mixed with other metals), which markedly improves its mechanical properties.

The main alloying agents for both wrought and cast aluminum are copper, zinc, magnesium, manganese, and silicon.

Special aluminum alloys can also be used for niche applications, and new aluminum alloys are being tested by scientists for making aluminum stronger or even more corrosion resistant.

Overall, aluminum is preferred to steel when the final product requires one or more of the following characteristics:

• Corrosion resistance.
• Lightweight but with strong structural integrity.
• Easier to machine into complex shapes.
• Higher thermal or electrical conductivity.
• The higher costs compared to steel are not a primary concern.

Πηγή: Erect a Step

Αλουμίνιο στις Μεταφορές: Αυτοκίνητα, Τρένα και Θαλάσσιες Χρήσεις

Aluminum is widely used in the automotive industry, as well as for marine vessels, railway cars, bicycles, etc.

It performs well in these applications thanks to its strength combined with light weight, improving fuel efficiency.

Aluminum is also easy to machine and pressed into complex shapes, making it a good choice for automated assembly line and the trend in the automotive industry toward “gigapress”.

Πηγή: HAOMEI

Αλουμίνιο στην Αεροδιαστημική και Εφαρμογές Ανθεκτικές στην UV

Παρότι το χαμηλό βάρος του αλουμινίου αποτελεί βασικό λόγο για τη χρήση του σε αεροδιαστημικές εφαρμογές, δεν είναι ο μόνος καθοριστικός παράγοντας. Η αντοχή στη διάβρωση το καθιστά βασικό υλικό στους κινητήρες αεριώθησης, ιδιαίτερα στα κράματα νικελίου-αλουμινίου, γνωστά και ως αλουμίνια αεροπορικών προδιαγραφών.

Another key advantage of aluminum is its high resistance to degradation by UV light. For this reason, aluminum is also used, even in a thin foil, for any material that can be damaged by UVs.

Πηγή: Thyssenkrupp

Industrial and Infrastructure Uses for Aluminum

Many infrastructures also require corrosion resistance to carry chemicals and other reactive compounds, especially pipes, vents, valves, pumps, etc.

This also makes aluminum an important material for processing equipment, tools, and other industrial machines.

Αλουμίνιο στην Κατασκευή και Αρχιτεκτονική

Aluminum is widely used in construction, especially for exposed materials like windows, doors, siding, sheathing, roofing, etc.

It is also a popular material for building greenhouses and any construction in a harsh climate or with regular exposure to water, where even stainless steel would ultimately start to rust.

Αλουμίνιο στην 3D Εκτύπωση και στην Προσθετική Κατασκευή

As 3D printing is mainly used for creating complex and lighter parts than traditional metal casting methods, it makes sense that aluminum is one of the primary metals used in 3D printing. Most are aluminum alloys with magnesium and/or silicon.

For example, Porsche 3D printed aluminum pistons for its flagship model, the GT2 RS.

Πηγή: Voxel Matters

Many different methods can be used for 3D printing aluminum, including laser metal powder bed fusion (L-PBF), binder jetting, kinetic consolidation, and wire-based 3D printing.

Καθημερινές Χρήσεις: Συσκευασία, Φόιλ και Οικιακά Προϊόντα

Aluminum foil, cans, oven trays and other food related products are omnipresent in the modern kitchen and supermarkets. This is because aluminum does not rust, resists high temperatures, is non-toxic, non-adsorptive, and splinter-proof.

For the same reason, the metal is commonly used in other cooking utensils like pots, as well as furniture, smartphone cases, etc.

Αλουμίνιο στην Ενέργεια: Γραμμές Μετάδοσης, Πλαίσια Ηλιακών Συστημάτων και Άλλα

As a highly conductive metal, aluminum is preferred to even copper for long-distance power transmission cables. Thanks to its lighter weight, aluminum allows for far fewer supporting pylons.

Πηγή: Yi Fang Cables

This high electrical conductivity is also leveraged in the production of aluminum-based motors, generators, transformers, capacitors, etc.

Aluminum is also the primary metal used in the frame of solar panels, accounting for more than 85% of most solar photovoltaic components.

Βιώσιμο Αλουμίνιο: Ανακύκλωση, Ανανεώσιμες Πηγές και Πράσινη Τεχνολογία

Αποανθρακοποίηση της Παραγωγής Αλουμινίου με Καθαρή Ενέργεια

Ένας κύριος προβληματισμός της παραγωγής αλουμινίου είναι η μεγάλη κατανάλωση ενέργειας. The majority of aluminum today is produced with carbon-neutral hydropower, but a significant portion is still powered by coal.

Replacing this coal-based aluminum production with nuclear or hydropower will be an important step in reducing global emissions.

As the process is primarily driven by electricity (electrolysis of alumina into aluminum) or easy-to-electrify heat (calcination of bauxite into alumina), this is an industrial process less difficult to make green than steel production.

However, having it rely exclusively on non-hydropower renewable energy is likely to take time for battery systems or other renewable energy sources to develop (like geothermal energy).

This is because aluminum smelting requires a 100% reliable and stable supply of power to prevent its electrolyzers from solidifying back and being permanently destroyed. So any aluminum smelter will only accept the most reliable power source, something that intermittent energy sources like wind and solar are unlikely to be able to deliver at scale in the next decade, but might later on with massive battery systems.

Ανακύκλωση Αλουμινίου: Άπειρη Δυνατότητα και Εξοικονόμηση Ενέργειας

Another way to make aluminum more sustainable is to use more recycling of aluminum product. In theory, aluminum is infinitely recyclable, contrary to plastics, for example, which tend to degrade with every recycling cycle.

75% of all aluminum ever produced is still in use today. Some countries are much ahead in this field, with 80% of U.S. production today is in making recycled (or secondary) aluminum, up from 20-30% recycled production in the 1980s.

Το αλουμίνιο είναι επίσης γενικά πιο βιώσιμο. Για παράδειγμα, τα αλουμινένια κουτιά ποτών περιέχουν πολύ περισσότερο ανακυκλωμένο υλικό από το γυαλί ή το πλαστικό και εξοικονομούν τεράστιες ποσότητες ενέργειας κατά τη μεταφορά και την ψύξη.

The input resources it uses, bauxite and caustic soda, are also available in almost unlimited amounts.

Το Μέλλον του Αλουμινίου: Νανοτεχνολογία, Υπερκράματα και Επόμενες Γενιές Μπαταριών

While industrial production aluminum is an almost century and half old technology, it is far from stagnating. New production methods and new alloys leveraging nanotechnology could make it even more the metal of the future than it is today.

η προσθήκη σκάνδιου στο αλουμίνιο με μια μέθοδο που δημιουργεί ακριβή νανοσωματίδια αλουμίνιο-μαγνήσιο-σπάνδιο μπορεί να κάνει το αλουμινικό κράμα 40% πιο δυνατό και 5 φορές πιο ανθεκτικό στη ζημιά από υδρογόνο.

Or σύνθετο Κουασικρυστάλ που σχηματίζονται όταν αναμειγνύεται το αλουμίνιο με το ζιρκόνιο, το οποίο μπορεί να κάνει το κράμα πολύ καλύτερο για εφαρμογές 3D εκτύπωσης.

Or a ένα κράμα βασισμένο σε τιτάνιο-αλουμίνιο (Ti-Al) υπερ-ελαστικό, ικανό να αντιδρά ελάχιστα σε ένα ευρύ φάσμα συνθηκών και θερμοκρασιών.

Aluminum could also find new applications, like for example μπαταρίες αλουμινίου-ιόντων για αντικατάσταση των λιθίου-ιόντων using similar principles, or aλουμίνιο-αεροβατρίες που χρησιμοποιούν την οξείδωση του αλουμινίου ως καύσιμο για τη δημιουργία υπερ-πυκνής αποθήκευσης ενέργειας για τα ηλεκτρικά οχήματα.

Τελευταίες Σκέψεις: Είναι το Αλουμίνιο Έξυπνη Μακροπρόθεσμη Επένδυση;

Aluminum has been a crucial metal for the development of new technology, starting from aviation in the early 20th century, to today’s spaceships, 3D printed parts and advanced energy systems.

It is likely that its low cost, abundant resources, and unique properties will make it even more popular in the future.

This could be through using aluminum as a key component of advanced battery systems. Or creating new superalloys adapted to special conditions, like transporting and storing hydrogen, working in space, or be easier to forge using laser 3D printers.

Lowering energy costs, be it from advanced nuclear tech, geothermal, or wind & solar with batteries, should also make it even cheaper to produce, and therefore more popular to use.

In any case, aluminum, like steel, is likely to stay the center of our manufacturing and building capacity, making it an interesting material for investors to get exposure to.

Επένδυση στον Τομέα του Αλουμινίου

Alcoa: Μια Ηγετική Ευκαιρία Επένδυσης στο Αλουμίνιο

Alcoa is a global aluminum company with a presence worldwide and over the entire aluminum supply chain, from bauxite ore to aluminum metal and alumina (the intermediary product between bauxite and aluminum). It was initially founded in 1907 as the Aluminum Company of America.

Πηγή: Alcoa

The company 41.3 Mdmt (Million dry metric tons) bauxite operations in 2024 send 85% of its shipment to Alcoa refineries.

Only 32% of the 13.2 Mt of produced alumina is sent to Alcoa foundries, producing 2.6 million tons of aluminum in 2024, with the rest sold to third parties.

Πηγή: Alcoa

The company produces aluminum in various forms to match the requirements of many different manufacturing industries.

Πηγή: Alcoa

Overall, aluminum production is a very energy-intensive activity, consuming electricity directly for smelting, oil for mining, coal to provide carbon in the smelting process, as well as consuming energy-intensive materials like caustic chemicals.

Still, Alcoa has made major efforts to reduce its carbon footprint, making it an industry leader in terms of carbon emissions, in part thanks to hydroelectricity facilities in Brazil, Canada, and Iceland. It also offers the Alcoa Sustana product line, with reduced carbon emissions and higher recycled metal content.

Πηγή: Alcoa

Tariffs could impact the company, as facilities in Canada and Brazil (among others) are going to face steep tariffs to sell to the USA. However the company also has production facilities in the USA, and the value of domestically produced aluminum has risen accordingly, which should boost the profitability of Alcoa’s American foundries.

Πηγή: Alcoa

Overall, Alcoa is a solid bet on the continuous popularity of aluminum for advanced manufacturing, aerospace, and power grid, all sectors where demand is expected to grow in the coming years.

Τελευταία Νέα και Εξελίξεις για το Μετοχικό Συμβόλαιο Alcoa (AA)