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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryMetal IndustrySierreConstellium Valais SA
Constellium Valais SA Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Constellium Valais SA is an industrial manufacturer operating aluminum casthouses, extrusion and plate production facilities. Its operations produce billets, slabs, large extruded profiles and high-value plates for the aerospace, defense, transportation and industrial markets.

AI-generated
Offering

Products & services

Industry:Metal Industry
✓ Offered4
Aluminium billets
Aluminium billets produced at the Chippis site and supplied for extrusion at the Sierre and Singen plants.
Aluminium slabs
Aluminium slabs cast in Steg for rolling, with alloys for the aeronautics, industrial, automotive and defence markets.
Aluminium extrusion profiles
Large aluminium extrusion profiles for the transport, industrial and general mechanical engineering sectors, including machining, bending, assembly and kitting operations.
Material testing and inspections
Destructive testing, metallurgical and microscopic tests, and checks of the chemical composition of the alloys produced at the casthouse.
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4.5/5

Constellium Valais SA

Trust & reputation

ranQ Trust Score of Constellium Valais SA: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 100% · As of October 2026

Constellium Valais SA scores 81.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.75.924%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.84.710%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.95.08%
Constellium Valais SA scores 95.8 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.96.07%
Constellium Valais SA scores 86.7 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).86.722%
Constellium Valais SA scores 81.7 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.63.34%
Qualifications+0.00

Constellium Valais SA reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.6 out of 5 stars from 27 customer reviews. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.6
of 5

Aggregated from 27 reviews across all connected sources

Sources
GGoogle4.627
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Press

Media

August 29, 2025Media
A Sierre, le géant de l’aluminium Constellium se tourne vers l’aérospatial et l’industrie de la défense
letemps.ch
August 28, 2025Media
Airbus, Boeing, SpaceX,…: A Sierre, Constellium investit plus de 5 millions pour pénétrer le marché aéronautique et spatial
lenouvelliste.ch
March 7, 2025Media
Le directeur de Constellium Valais affiche sa confiance en l’avenir: «Nous allons en sortir grandis»
lenouvelliste.ch
July 11, 2024Media
En Valais, les usines des groupes Novelis et Constellium sont toujours à l’arrêt
rts.ch
October 18, 2023Media
Constellium: 220 salariés des sites de Sierre et Steg en chômage technique jusqu’à fin novembre
lenouvelliste.ch

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Location

Route des Laminoirs 15
3960 Sierre
Opening hours
Mon
07:00 - 12:00, 13:00 - 16:00
Tue
07:00 - 12:00, 13:00 - 16:00
Wed
07:00 - 12:00, 13:00 - 16:00
Thu
07:00 - 12:00, 13:00 - 16:00
Fri
07:00 - 12:00, 13:00 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.980.844
Founded
1989 · 37 years
Last commercial register change
March 30, 2026
Employees
101 to 500
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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