Cogne Acciai Speciali: stainless and nickel-alloy long products, Walsin connection
public-source-reviewed; confirm works-specific certifications and procurement approvals
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Italian mill profile of Cogne Acciai Speciali S.p.A.: corporate identity, production routes, product range and sourcing checks.
Italian mill profile of Cogne Acciai Speciali S.p.A.: corporate identity, production routes, product range and sourcing checks.
| At a glance | |
|---|---|
| Operating identity | Cogne Acciai Speciali S.p.A. |
| Main Italian production location(s) | Aosta, Italy; wider European production network |
| Manufacturing role | Special-steel and stainless long-product producer |
| Last source review | 2026-10-11 |
Company identity and history
Cogne dates to the Aosta special-steel tradition. Walsin Lihwa became majority shareholder at a 70% stake in late 2022, with the Marzorati family retaining 30% at that closing. Cogne acquired former Outokumpu Long Products facilities at Degerfors and Storfors in 2023. Later capital or ownership updates must be checked against current filings.
This company should be assessed as a specific operating manufacturer, not merely as a familiar brand name. Historical names and group affiliations may explain an old mill certificate without confirming that a different current site has equivalent approvals.
Main products and manufacturing role
Stainless and special alloy long products, large bars, billet and wire rod; selected nickel-alloy long products.
Manufacturing capability: Cogne presents its alliance with Walsin as a broader stainless/nickel long-product platform. This does not make the two companies interchangeable mill identities or imply that any group site manufactures every listed grade or size.
For a complex steel order, the decisive questions are whether the entity melts steel, rolls it, forges it, manufactures tubes from purchased inputs, or performs subsequent finishing. Each activity can involve a different certifying legal entity and production works.
Certifications and project qualification
Public portfolios demonstrate products and manufacturing experience, but do not establish current EN 10204 certificate scope, CE/UKCA status, PED qualification, class approval, API license, client AVL entry, or acceptance for a specific project. These must be checked by exact operating works, product, grade, dimensions, standard edition and expiry date.
Do not treat a management-system certificate such as ISO 9001 as interchangeable with product or project approval.
Procurement takeaway
Ask for precise production works, melting origin, forged or rolled condition, solution annealing or other heat treatment, product standard, corrosion requirements and applicable MTC/approval scope.
What to check before an RFQ or PO
- Exact manufacturer and legal name, melting works and production/finishing site.
- Steel or alloy designation, product standard and edition, order dimensions and delivery condition.
- MTC issuer and traceability to heat, ingot/billet or forging input.
- Applicable EN 10204 certificate type, required NDT, Charpy/CTOD or other tests if specified.
- Current manufacturing range, works-specific qualification and customer-approved-mill requirements.
- Seller/trader identity versus actual producer and Incoterm.
Sources and verification references
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Cogne Acciai Speciali: stainless and nickel-alloy long products, Walsin connection
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