Our surface treatment expertise


Reinforce your simple or complex geometry metal parts using our ultrasonic activated shot peening process (standard and customized machines, shot peening and conventional sanding accessories, outsourcing service). Learn more

  • Ultrasonic shot peening - work hardening and cold working process
    What is shot peening ?
  • Ex-situ Subcontract shot peening - SONATS
    Shot peening equipment
  • Automated shot peening equipment
  • Shot peening service


Modify the geometry of your sheets and metal parts using our portable ultrasonic needle peening and peen forming system. This system is easy to set-up and use as well as being approved by many prime contractors. Learn more

  • FShot peen forming aerospace - SONATS
    Peen forming
  • Aerospace peen forming equipment


Improve the fatigue resistance of welded assemblies by modifying the geometry of the weld toe with our ultrasonic impact treatment process, an embedded process on a portable or automated equipment. Learn more

  • Parachèvement de soudure par ultrasons - SONATS
    Ultrasonic impact treatment
  • Ultrasonic impact treatment services
  • Opération manuelle de parachèvement de soudure - SONATS
    Ultrasonic impact treatment equipment


The stress and materials characterisation laboratory provides services including measurement and analysis at the laboratory itself but also at your production site when needed. Learn more

  • Contour method - residual stress measurement - SONATS
    Contour method for residual stress measurements
  • Eddy current testing for residual stress measurements
  • hole drilling method -residual stresses - SONATS
    Hole drilling for residual stress measurement
  • Metallurgical testing
  • Residual stress measurement
  • Ring core method residual stress measurement
    Ring Core Method
  • Surface and dimensional metrology
  • X-ray diffraction services

Our history

For more than 25 years, SONATS has been providing impact surface treatment solutions and laboratory services :

SONATS is an innovative industrial company specialised in cold impact mechanical surface treatment, the main process being ultrasonic shot peening (STRESSONIC® Technology).

Based on its specialist knowledge, SONATS designs and manufactures a complete range of products, from portable equipment to customized machines, as well as providing training, outsourcing and residual stresses analysis services, both on and off site.

Renowned, qualified and certified, SONATS is committed to providing the best technology via our dedication to R&D to perfectly fulfil the continuously evolving needs of our customers.

Our customers

News & Events

Read our latest news, dates of participation to regional and international shows, articles and job advertisement. 

[WEBINAR] Shot peening innovations for high-performance transmission parts

Watch the replay I would like to be recalled to discuss about my project.I want more information. I download flyers in the shot peening section. Join this webinar to find…

Ultrasonic Shot Peening vs Conventionnel Shot Peening – The importance of key parameters

SONATS’ expert demonstrated in a study that STRESSONIC® Ultrasonic Shot Peening (USP) process could replicate Conventional Shot Peening (CSP) process. Amongst this study they have been able to highlight that…


"Because high value components continuously require more controlled, cleaner and more efficient shot-peening solutions, SONATS ultrasonic shot-peening solutions have become more and more relevant and bring about new benefits, from…