MATTRIS 2027 · Orléans Convention Center · June 2–3, 2027 - Reserve a booth →

The French Network for Heat and Surface Treatments

National Association · since 1969

Manufacturers, laboratories, technical centers, and schools: A3TS brings the industry together to share knowledge, train teams, and advance processes.

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Since 1969

More than 55 years of service to the industry

Qualiopi Certified

In-house and Inter-Company Training

Regional Sections

An active network throughout France

600 members

Companies, Experts, and Partners

Our next events

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RAVIE 2026 - Dry-applied coatings conference
Nov. 4
RAVIE 2026 - Dry-applied coatings conference

Focus on upstream research in dry-process deposition.

Les 4 et 5 novembre 2026 à Limoges, l’A3TS et le Pôle Européen de la Céramique font dialoguer recherche académique et perspectives industrielles autour des technologies émergentes (TRL < 5). Conférences, visites de sites et soirée de gala.

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Innovate, master, and control thermal and thermochemical treatments
Nov. 26
Innovate, master, and control thermal and thermochemical treatments

Registration is now open!

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Processing and Finishing of Additive-Manufactured Parts 2027
March 24
Processing and Finishing of Additive-Manufactured Parts 2027

For this 6th edition, A3TS is bringing together manufacturers, laboratories, and technical centers in Reims.

Two days of conferences and a trade show to take a raw print to a certifiable part.

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ECHT 2027 & 32nd IFHTSE World Congress
Apr. 28
ECHT 2027 & 32nd IFHTSE World Congress

Call for papers !

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MATTRIS 2027 by A3TS, Orléans Convention Center
June 2
MATTRIS 2027 by A3TS, Orléans Convention Center

Reserve your booth!

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Our latest news

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From Fragilization to Electrolyzers: Key Takeaways from Hydrogen Days 2026
De la fragilisation aux électrolyseurs : ce qu’il faut retenir des Journées Hydrogène 2026
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“When artistic processes reveal the hidden landscapes of matter”
“When artistic processes reveal the hidden landscapes of matter”
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A3TS × GRDF Webinar
A3TS × GRDF Webinar

Feedback and a recording of the webinar!

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2026 Photo Contest: Gesture Before Matter
2026 Photo Contest: Gesture Before Matter
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A3TS Innovation Award 2026
A3TS Innovation Award 2026

Discover the innovations showcased at the 2026 A3TS Innovation Competition in Mattris on July 1 and 2, 2026, in Dunkirk, and find out which company won!

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From carbonitriding to nitriding, from chromating to anodizing

Find out everything there is to know about heat treatment and surface treatment technologies

Process data sheets

Who are we
?

About A3TS

A collaborative structure for the dissemination of materials processing technologies in the industrial sectors!

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There is strength in numbers.

Since its creation in 1969, the A3TS teams have been committed to pooling the skills of its members and sharing their knowledge of cutting-edge heat treatment and surface treatment technologies.

The teams

A well established structure.

  • Sections and regional offices

    They are the active fabric of the regional A3TS and aim to maintain a synergy between local actors gathered around events and common industrial themes.

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  • Our partners and benefactors

    They participate in the scientific and technical influence of the A3TS and provide it with active support.
    These companies make the reputation of the activity in the materials processing sector.

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  • Scientific Council and Technical Commissions

    The Scientific and Technological Council ensures the quality of the information disseminated by the A3TS. It exercises a mission of proposal by generating ideas and by ensuring the renewal of the topics. conferences and publications.

    It is the guarantor of the scientific quality of the information disseminated by the A3TS, and also has a mission of monitoring and control over the content of conferences and articles.

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Careers
and
training

Discover our training courses

A3TS is a QUALIOPI certified training organization. We offer a wide range of training courses, adapted to different levels, intra or inter-company.

See our training courses

A career in heat treatment and surface treatment

  • Teaching

    Discover our partner institutions (Baccalaureate, BTS, engineering schools and universities).

    See the establishments

  • The job offers

    Find here the job offers of our members and industrial companies in the materials processing sector.

    See the offers

  • Submit a CV

    Post your CV in our CV library and be visible to our members.

    Submit a resume

They accompany us

Heat treatment associations

Technological centers, clusters

Professional associations

Media