SIST EN 3955:2002

• Abstract:

  This standard specifies the requirements relating to:; Silver base alloy AG-B12401 (AgCu40Zn5Ni); Filler metal for brazing; Rolled foil; 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 3955:2001 - Aerospace series - Silver base alloy AG-B12401 (AgCu40Zn5Ni) - Filler metal for brazing - Rolled foil

• 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

SIST EN 3955:2002 is a Slovene adoption of EN 3955:2001 for aerospace materials. It specifies requirements for a silver base alloy, AG-B12401 (AgCu40Zn5Ni), used as filler metal for brazing in rolled foil form. The standard is intended for aerospace applications, so it is the document to use when the filler metal itself, not the brazed joint design, needs to be identified and controlled.

What does SIST EN 3955:2002 specify?

SIST EN 3955:2002 specifies the requirements for the silver base alloy AG-B12401 (AgCu40Zn5Ni) as a brazing filler metal supplied as rolled foil for aerospace applications. In practice, that means it defines the material and product form to be used when selecting or procuring brazing foil for aerospace work.

The scope is limited to the alloy, its filler-metal use, and the rolled-foil form. The document is identified in the aerospace series and is classified under non-ferrous alloys.

What are the key requirements of SIST EN 3955:2002?

SIST EN 3955:2002 focuses on a single material designation and a single product form, which helps avoid ambiguity in procurement and production. The important point for users is that the standard is about specifying the brazing filler metal itself, so it supports material selection, incoming inspection, and supplier agreement.

• Alloy identification - The standard names the silver base alloy AG-B12401 and gives its composition designation AgCu40Zn5Ni. This lets buyers and engineers specify the exact filler metal without relying on a trade name.
• Brazing filler metal - The material is intended as filler metal for brazing. In practice, this means it is meant to melt and flow during brazing to join aerospace components.
• Rolled foil form - The product form is rolled foil. That matters because the supply form affects handling, cutting, placement, and process control in brazing operations.
• Aerospace application - The standard is written for aerospace applications. That signals that the material is intended for controlled use where traceability and material consistency are important.
• Standardized designation - The document uses the AG-B12401 designation alongside the chemical shorthand. This helps engineers and purchasers match specifications across drawings, procurement documents, and inspection records.
• European adoption - SIST EN 3955:2002 is the Slovene standard equivalent to EN 3955:2001. For users, this means it can be used as the national adoption of the European document in Slovenia.

What terms does SIST EN 3955:2002 define?

• AG-B12401 - The alloy designation used in the standard for the brazing filler metal.
• AgCu40Zn5Ni - The composition shorthand given in the title for the silver base alloy.
• Filler metal for brazing - The material that is placed in a brazed joint and melts during the brazing process.
• Rolled foil - The product form in which the filler metal is supplied as thin sheet or foil.
• Aerospace applications - The intended field of use for the material, where controlled material specification is important.

Who uses SIST EN 3955:2002?

SIST EN 3955:2002 is used by aerospace manufacturers, brazing engineers, materials engineers, quality managers, and procurement teams. They use it when specifying, buying, receiving, or approving brazing foil made from this silver base alloy.

It is also relevant to suppliers of brazing filler metals who need to identify the product form and alloy designation correctly for aerospace customers.

What changed in SIST EN 3955:2002 from the previous edition?

SIST EN 3955:2002 is identical to EN 3955:2001.

What does the SIST EN 3955:2002 document contain?

SIST EN 3955:2002 contains the standardized title, scope, and bibliographic information for the aerospace series material standard. It identifies the alloy designation, the chemical shorthand, the filler-metal application, and the rolled-foil product form.

The document also includes multilingual front matter and classification information. For practical users, the document serves as the reference that names the material unambiguously for aerospace brazing applications.

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 - Rolled foilLuft- und Raumfahrt - Silberbasislegierung AG-B12401 (AgCu40Zn5Ni) - Hartlot in Form von gewalzter FolieSérie aérospatiale - Alliage base argent AG-B12401 (AgCu40Zn5Ni) - Métal d'apport de brasage - Feuillard laminéAerosp
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