SIST EN 4327:2002

• Abstract:

  This standard specifies the requirements relating to :; Heat resisting alloy CO-WH1401 (CoCr26Ni11W8); Filler metal for welding; Wire and rod; for aerospace applications.

• Status: Published
• Publication Date: 31-Dec-2001
• ICS: 49.025.15 - Non-ferrous alloys in general
• Technical Committee: SS SPL - Technical Board for the general field
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Jan-2002
• Due Date: 01-Jan-2002
• Completion Date: 01-Jan-2002
• Ref Project: EN 4327:2001 - Aerospace series - Heat resisting alloy CO-WH1401 (CoCr26Ni11W8) - Filler metal for welding - Wire and rod

• Refers: SIST EN 4258:2024 - Aerospace series - Metallic materials - General organization of standardization - Link between types of European Standards and their use
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 4632-005:2010 - Aerospace series - Weldability and brazeability of materials in aerospace constructions - Part 005: Homogeneous assemblies of heat resisting Ni or Co base alloys
• Effective Date: 28-Jan-2026

SIST EN 4327:2002 is the Slovenian adoption of EN 4327:2001 from CEN for aerospace welding consumables. It specifies requirements for the heat resisting alloy CO-WH1401 (CoCr26Ni11W8) in wire and rod form as filler metal for welding in aerospace applications. The document covers alloy designation, chemical composition, melting and production route, delivery condition, inspection references, and the link to product qualification.

What does SIST EN 4327:2002 specify?

SIST EN 4327:2002 specifies the requirements for a heat resisting alloy filler metal for welding, supplied as wire and rod, for aerospace use. It is a material standard, so it is aimed at defining what the product is and how it is identified and controlled in supply.

The document is arranged around the usual aerospace material-standard structure: scope, normative references, material designation, product form and production route, delivery condition, inspection-related items, marking and dimensional inspection, typical use, and product qualification. In practice, that helps a buyer or supplier see what to order, what state the product must be in, and which companion standards are used for verification.

What are the key requirements of SIST EN 4327:2002?

SIST EN 4327:2002 fixes the material designation as CO-WH1401 (CoCr26Ni11W8) and ties it to a defined chemical composition. That matters because the alloy identity is controlled by chemistry, not just by trade name.

Material identity and make-up

The standard specifies the alloy as air melted and in wire and rod form. It also sets the production method as cold drawn and gives a defined delivery condition, including the delivery condition code U. In practice, this tells manufacturers how to make the product and tells purchasers what state they should receive and inspect.

The composition table covers the main alloying and trace elements, including carbon, silicon, manganese, phosphorus, sulfur, chromium, nickel, tungsten and iron. This is important because chemical limits are the basic acceptance control for welding filler metal.

Product condition and dimensions

SIST EN 4327:2002 defines the product as cold drawn and annealed in the delivery condition. It also gives a limit dimension for the supplied wire and rod. For users, this means the product is not a generic alloy rod - it is a controlled semi-finished welding consumable with a specific supplied condition.

Inspection and verification

For external defects, residual stress, internal defects, batch uniformity, marking inspection, and dimensional inspection, the standard points to EN 3879. That means acceptance is not handled only inside this document; it relies on the wider welding filler-metal technical specification.

Qualification

For product qualification, the standard points to EN 2043 and states that the qualification programme is to be agreed between manufacturer and purchaser. In practice, qualification is a joint control step, so the supplier and customer need to align on the verification plan before use.

What terms does SIST EN 4327:2002 define?

• CO-WH1401 (CoCr26Ni11W8) - the alloy designation used by the standard for this heat resisting welding filler metal.
• Heat resisting alloy - the alloy family intended for elevated-temperature service in aerospace welding applications.
• Filler metal for welding - the consumable material supplied to form a weld deposit.
• Wire and rod - the two product forms covered by the standard.
• Air melted - the melting route specified for the alloy before further processing.
• Cold drawn - the forming method used to make the wire and rod.
• Delivery condition code U - the code assigned to the specified supply condition of the product.
• Product qualification - the agreed qualification programme used to confirm the product for use.

Who uses SIST EN 4327:2002?

SIST EN 4327:2002 is used by aerospace welding consumable manufacturers, material suppliers, purchasers, quality managers, and inspection personnel. It is especially relevant when a team needs to specify, order, receive, or qualify a high-temperature welding filler metal in wire or rod form.

It also helps engineering and procurement teams align on material designation, supply condition, and the inspection standard to use at acceptance. For buyers, it gives a clear reference for what to ask for; for suppliers, it gives the basis for product control and documentation.

What changed in SIST EN 4327:2002 from the previous edition?

SIST EN 4327:2002 is identical to EN 4327:2001.

Which standards are used with SIST EN 4327:2002?

• EN 2043 - provides the general requirements for semi-finished product qualification, which the standard uses for product qualification.
• EN 3879 - gives the technical specification for filler metal for welding, used for defect checks, batch uniformity, marking inspection and dimensional inspection.
• EN 4258 - sets the general organization of aerospace metallic-material standards and their use.
• EN 4500-3 - gives the drafting and presentation rules for material standards for heat resisting alloys.

What does the SIST EN 4327:2002 document contain?

The document contains a material designation table that links the alloy name to its composition, melting route, product form, production method, delivery condition and use condition. It also contains a requirements matrix that points to EN 3879 for several inspection items and to EN 2043 for qualification.

It includes a short foreword, an introduction to the aerospace material-standard series, and a note on the standard’s typical use. For practical work, the most useful content is the controlled product identity and the cross-references that tell users how to inspect and qualify the filler metal.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Heat resisting alloy CO-WH1401 (CoCr26Ni11W8) - Filler metal for welding - Wire and rodLuft- und Raumfahrt - Hochwarmfeste Legierung CO-WH1401 (CoCr26Ni11W8) - Schweißzusatz - Draht und StäbeSérie aérospatiale - Alliage résistant a chaud CO-WH1401 (CoCr26Ni11W8) - Métal d'apport de soudage - Fil et baguetteAerospace series - Heat resisting alloy CO-WH1401 (CoCr26Ni11W8) - Filler metal for welding - Wire and rod49.025.15Neželezove zlitine na splošnoNon-ferrous alloys in generalICS:Ta slovenski standard je istoveten z:EN 4327:2001SIST EN 4327:2002en01-januar-2002SIST EN 4327:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4327June 2001ICS 49.025.15English versionAerospace series - Heat resisting alloy CO-WH1401(CoCr26Ni11W8) - Filler metal for welding - Wire and rodSérie aérospatiale - Alliage résistant à chaud CO-WH1401(CoCr26Ni11W8) - Métal d'apport de soudage - Fil etbaguetteLuft- und Raumfahrt - Hochwarmfeste Legierung CO-WH1401 (CoCr26Ni11W8) - Schweißzusatz - Draht undStäbeThis European Standard was approved by CEN on 2 May 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4327:2001 ESIST EN 4327:2002

Page 2EN 4327:2001ForewordThis European Standard has been prepared by the European Association of Aerospace Manufacturers(AECMA).After inquiries and votes carried out in accordance with the rules of this Association, this Standard hasreceived the approval of the National Associations and the Official Services of the member countries ofAECMA, prior to its presentation to CEN.This European Standard shall be given the status of a national standard, either by publication of an identicaltext or by endorsement, at the latest by December 2001, and conflicting national standards shall bewithdrawn at the latest by December 2001.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountr
...