SIST EN 3953:2002

Aerospace series - Silver base alloy AG-B12401 (AgCu40Zn5Ni) - Filler metal for brazing - Wire

This standard specifies the requirements relating to:
Silver base alloy AG-B12401 (AgCu40Zn5Ni)
Filler metal for brazing
Wire
for aerospace applications.

Luft- und Raumfahrt - Silberbasislegierung AG-B12401 (AgCu40Zn5Ni) - Hartlot in Form von Draht

Diese Norm legt die Anforderungen an:
Silberbasislegierung AG-B12401 (AgCu40Zn5Ni)
Hartlot in Form von Draht
für die Anwendung in der Luft- und Raumfahrt fest.

Série aérospatiale - Alliage base argent AG-B12401 (AgCu40Zn5Ni) - Métal d'apport de brasage - Fil

Aerospace series - Silver base alloy AG-B12401 (AgCu40Zn5Ni) - Filler metal for brazing - Wire

General Information

• 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 3953:2001 - Aerospace series - Silver base alloy AG-B12401 (AgCu40Zn5Ni) - Filler metal for brazing - Wire

Overview

SIST EN 3953:2002 is a European standard developed by the European Committee for Standardization (CEN) that specifies the technical requirements for the silver base alloy AG-B12401 (AgCu40Zn5Ni) used as a filler metal for brazing in aerospace applications. This standard focuses specifically on the alloy in wire form, outlining its composition, production method, physical and mechanical properties, and testing criteria.

The silver-based brazing alloy is engineered to ensure high reliability and quality in demanding aerospace environments, meeting stringent industry requirements for material performance and safety. It integrates into the widely recognized aerospace series of metallic material standards, coordinated through organizational frameworks such as the European Association of Aerospace Manufacturers (AECMA).

Key Topics

• Material Composition: The filler metal AG-B12401 consists primarily of silver (Ag) with alloying elements copper (Cu), zinc (Zn), and nickel (Ni). The chemical composition is tightly controlled to specific percentages to optimize brazing performance and mechanical strength.

• Wire Form and Production: The standard defines that the alloy must be provided in the form of wire, produced by cold forming and cleaning processes to ensure optimal surface quality for aerospace brazing applications.

• Mechanical and Physical Properties:

  • Liquidus temperature around 855 °C and solidus temperature near 720 °C.
  • Mechanical parameters including proof stress (Rp0.2), tensile strength (Rm), elongation percentage (A%), and hardness are specified to guarantee standardized behavior under operating conditions.
  • Shear strength and bending characteristics ensure the filler metal’s integrity during assembly and service.

• Quality and Inspection: Material uniformity, dimensional accuracy, external defects, and marking inspections comply with the referenced EN 3875 and EN 2043 standards.

• Heat Treatment and Delivery Conditions: The alloy can be supplied in an annealed or as-manufactured condition, with designated heat treatment codes and recommendations to align with use conditions.

Applications

• Aerospace Industry Brazing: SIST EN 3953:2002 is primarily applied in the aerospace sector for joining critical metallic components where high-strength and corrosion resistance are vital.
• Joining Carbon, Low Alloy, and Austenitic Steels: The silver base brazing alloy is engineered to join these steel types reliably, making it an essential material for manufacturing aircraft structures, engines, and other aerospace system assemblies.
• Precision Wire Filler Metal: The standard ensures that wire form brazing filler metals meet consistent dimensional and chemical criteria that support automated and manual brazing techniques in aerospace manufacturing.

Related Standards

SIST EN 3953:2002 works in conjunction with several other aerospace and metallic material standards, including:

• EN 3875 - Aerospace series for filler metal for brazing, specifying technical requirements and general filler metal properties.
• EN 2043 - Addresses general requirements for semi-finished metallic products qualification in aerospace.
• EN 4258 - Describes the general organization of aerospace material standardization and links among different EN standards for metallic materials.
• EN 4500-6 - Provides specific drafting and presentation rules for aerospace filler metal standards.

Together, these standards create a cohesive framework ensuring materials like AG-B12401 filler metal meet the rigorous demands of aerospace manufacturing, improving safety, reliability, and quality assurance throughout the supply chain.

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Keywords: SIST EN 3953:2002, aerospace standard, silver base alloy, brazing filler metal, AG-B12401, AgCu40Zn5Ni, brazing wire, aerospace materials, silver alloy brazing, aerospace manufacturing, filler metal specifications, non-ferrous aerospace alloys.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Silver base alloy AG-B12401 (AgCu40Zn5Ni) - Filler metal for brazing - WireLuft- und Raumfahrt - Silberbasislegierung AG-B12401 (AgCu40Zn5Ni) - Hartlot in Form von DrahtSérie aérospatiale - Alliage base argent AG-B12401 (AgCu40Zn5Ni) - Métal d'apport de brasage - FilAerospace series - Silver base alloy AG-B12401 (AgCu40Zn5Ni) - Filler metal for brazing - Wire49.025.15Neželezove zlitine na splošnoNon-ferrous alloys in generalICS:Ta slovenski standard je istoveten z:EN 3953:2001SIST EN 3953:2002en01-januar-2002SIST EN 3953:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3953June 2001ICS 49.025.15English versionAerospace series - Silver base alloy AG-B12401 (AgCu40Zn5Ni)- Filler metal for brazing - WireSérie aérospatiale - Alliage base argent AG-B12401(AgCu40Zn5Ni) - Métal d'apport de brasage - FilLuft- und Raumfahrt - Silberbasislegierung AG-B12401(AgCu40Zn5Ni) - Hartlot in Form von DrahtThis European Standard was approved by CEN on 19 April 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 3953:2001 ESIST EN 3953:2002

Page 2EN 3953:2001ForewordThis 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 followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark,Finland, France, Ge
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