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Scandium Canada updates on its proprietary Aluminum-Scandium Alloys

Corporate Updates

Scandium Canada updates on its proprietary Aluminum-Scandium Alloys

Montreal, QC, September 25, 2025 — Scandium Canada Ltd. is pleased to announce that

new data on the properties of its modified AA535 and AA7075 alloys confirm an

economically viable technological advancement in the field of aluminum -scandium (Al-Sc)

alloys explicitly developed for additive manufacturing applications. The current results are

focused on the properties of samples printed through the laser powder -bed fusion (L-PBF)

process. The company’s latest results substantiate that Scandium Canada’s alloys offer a

practical solution to one of the most persistent challenges in metal 3D printing: eliminati ng

cracking in high-strength aluminum alloys, which paves the way for a new era of lightweight,

high-performance, and cost -effective components across multiple industries. See press

release : Scandium Canada updates on aluminum -scandium 3D powders research and

development. It should be noted that Scandium Canada has established a division within

the company, Scandium +, dedicated explicitly to ramp up commercialization efforts for

these two Al-Sc powders and the development of other Al -Sc alloys, to engage in dialogue

with end-users. Press release : Scandium Canada Ltd. makes changes to its management

team and corporate structure.

Scandium+'s main objectives are to :

• Deploy scandium in markets with the highest needs.

• Commercialization of patent-pending Al-Sc alloys with potential in multiple sectors

(AA7075/Sc/Zr & AA535/Sc/Zr/Ce).

• Focus on value-added Scandium alloys.

The main attributes of Scandium Canada’s Al-Sc powders include:

• Reduced Scandium Content: The technology enables significant reductions in the

amount of scandium required, directly addressing cost and resource sustainability.

The alloys maintain the grain-refining effect necessary to eliminate hot cracking

during L-PBF processing, making high -quality production possible at lower material

expense.

• Broad Processing Window: The newly developed aluminum -scandium-zirconium

alloys exhibit printability across a wide range of laser power and scanning speed

parameters. Testing has confirmed relative densities above 99% under optimal

conditions, a key measure for component integrity and reliability.

• Suitable Mechanical Properties: Mechanical testing shows ultimate tensile

strengths (UTS) ranging from approximately 330 to 380 MPa in the as-built state. With

heat treatment, these alloys achieve UTS increases of 17–25%.

• Minimized Defect Density: The proprietary blending procedure , utilizing ZrH2,

reduces the formation of microcracks with only minimal microporosity. This marks a

substantial improvement over previous generations of L-PBF aluminum alloys, where

macro-cracking was a common issue and hindered large -scale adoption. This also

offers potential for other applications than L-P B F.

“Scandium Canada’s proprietary alloys directly address the critical need for printable, high-

strength, and lightweight metals in sectors such as aerospace, automotive, and advanced

manufacturing. This advancement is expected to accelerate the transition to lightweight

structures in critical applications, supporting global efforts toward sustainability, energy

efficiency, and improved engineering design ,” commented Dr. Luc Duchesne, Head of

Scandium+ division and Chief Science Officer.

Filing of a new international patent application

This innovation, developed in partnership with McMaster University, is now protected by a

new international patent application filed under the Patent Cooperation Treaty (PCT) on

September 17, 2025. This strategic move not only enhances Scandium Canada’s growing

intellectual property portfolio but also positions the company for commercial applications.

Short-term commercial opportunities study

An ongoing study with Productique Quebec announced on August 22, 2025, is currently

using the properties of Scandium Canada’s alloys to assess 10 short -term commercial

opportunities from a n extensive list of over 140 potential uses of Scandium Canada’s

scandium alloy s. Completion of this study is expected in mid-October 2025 and targets

several applications, in addition to laser powder-bed fusion (L-PBF).

ABOUT SCANDIUM CANADA LTD.

Scandium Canada (TSX -V: SCD) is a public company whose ultimate goal is to bring the

world's leading primary source of scandium into production, enabling the development and

commercialization of aluminum -scandium (Al-Sc) alloys. The Corporation is leveraging its

Al-Sc alloy developmen t division and the development of its Crater Lake mining project to

meet the growing need for lighter, greener, longer-lasting, high-performance materials. The

Corporation aims to become a market leader in scandium, while commi tting itself to

building a more responsible economy through innovation and agility.

ABOUT SCANDIUM+

Scandium+ is dedicated to the research, development, and commercialization of innovative

scandium uses. We strive to unlock the full potential of scandium through strategic

partnerships, cutting -edge technology, and a commitment to responsible stewardship,

leading progress across multiple sectors.

Forward-Looking Statements

All statements, other than statements of historical fact, contained in this press release

including, without limitation, statements reporting the results of test s of Scandium

Canada’s Al-Sc alloys, their main attributes and resulting advantages, the protection

provided by the filing of an international patent application, the short term potential

commercial opportunities and, generally, the above “About Scandium Canada Ltd.”

paragraph which essentially described the Corporation’s outlook, constitute “forward-

looking information" or “forward -looking statements” within the meaning of applicable

securities laws, and are based on expectations, estimates and projections as of the time

of this press release. Forward-looking statements are necessarily based upon a number

of estimates and assumptions that, while considered reasonable by the Corporation as of

the time of such statements, are inherently subject to significant business, economic and

competitive uncertainties, and contingencies. These estimates and assumption may

prove to be incorrect. Many of these uncertainties and contingencies can directly or

indirectly affect, and could cause, actual results to differ materially from those expressed

or implied in any forward- looking statements and future events, could differ materially

from those anticipated in such statements. A description of assumptions used to develop

such forward-looking information and a description of ri sk factors that may cause actual

results to differ materially from forward -looking information can be found in the

Corporation’s disclosure documents on the SEDAR+ website at www.sedarplus.ca. By

their very nature, forward- looking statements involve inherent risks and uncertainties,

both general and specific, and risks exist that estimates, forecasts, projections and other

forward-looking statements will not be achieved or that assumptions do not reflect future

experience. Forward- looking statements are provided for the purpose of providing

information about management’s endeavors to develop the Crater Lake project, and,

more generally, its expectations and plans relating to the future. Readers are cautioned

not to place undue reliance on these forward-looking statements as a number of important

risk factors and future events could cause the actual outcomes to differ materially from

the beliefs, plans, objectives, expectations, anticipations, es timates, assumptions and

intentions expressed in such forward- looking statements. All of the forward- looking

statements made in this press release are qualified by these cautionary statements and

those made in our other filings with the securities regulators of Canada. The Corporation

disclaims any intention or obligation to update or revise any forward-looking statement or

to explain any material difference between subsequent actual events and such forward-

looking statements, except to the extent required by applicable law. Neither the TSX

Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or

accuracy of this release.

For additional information, please contact :

Scandium Canada Ltd.

Guy Bourassa

Chief Executive Officer

Phone: +1 (418) 580-2320

Email: [email protected]

Website: www.scandium-canada.com

LinkedIn: Scandium Canada Ltd.

X: @ScandiumCanada

Facebook: Scandium Canada

Instagram: @scandiumcanada