SIST EN 3936:2002

Aerospace series - Nickel base alloy NI-B21001 (NiCr15B4) - Filler metal for brazing - Powder or paste

This standard specifies the requirements relating to:
Nickel base alloy NI-B21001 (NiCr15B4)
Filler metal for brazing
Powder or paste
for aerospace applications.

Luft- und Raumfahrt - Nickelbasislegierung NI-B21001 (NiCr15B4) - Hartlot in Form von Pulver oder Paste

Diese Norm legt die Anforderungen an:
Nickelbasislegierung NI-B21001 (NiCr15B4)
Hartlot in Form von Pulver oder Paste
für die Anwendung in der Luft- und Raumfahrt fest.

Série aérospatiale - Alliage base nickel NI-B21001 (NiCr15B4) - Métal d'apport de brasage - Poudre ou pâte

Aerospace series - Nickel base alloy NI-B21001 (NiCr15B4) - Filler metal for brazing - Powder or paste

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 3936:2001 - Aerospace series - Nickel base alloy NI-B21001 (NiCr15B4) - Filler metal for brazing - Powder or paste

Overview

SIST EN 3936:2002 is a European standard developed by CEN that specifies the requirements for the aerospace series nickel base alloy NI-B21001 (NiCr15B4). This alloy is utilized as a filler metal for brazing applications in the aerospace industry. The standard covers the form and production methods of this filler metal supplied either as powder or paste, ensuring consistent quality for critical aerospace components.

The EN 3936 standard ensures that nickel base filler metals meet stringent aerospace quality and performance criteria. It supports safe and reliable brazing practices, essential for joining high-temperature resistant alloys like nickel and cobalt-based metals commonly used in aircraft and spacecraft manufacturing.

Key Topics

• Material Specification: Defines the chemical composition limits of nickel base alloy NI-B21001 (NiCr15B4), including nickel, chromium, boron, and other trace elements ensuring optimal mechanical and thermal properties.
• Forms and Production: Details the filler metal forms available-powder and paste-and requires production via water or inert gas atomization processes, maintaining purity and particle size uniformity.
• Supply Condition: Filler metal is provided as-manufactured, either directly as powder or mixed into a paste with a binder, to suit various brazing application needs.
• Quality Requirements: Includes tests for external defects, particle size, batch uniformity, heat treatment, mechanical properties such as hardness and shear strength, and dimensional inspection.
• Thermal Behavior: Specifies thermal analysis methods including differential thermal analysis for eutectic point determination, which assists in process control during brazing.
• Application Standards Alignment: Harmonized with other aerospace material standards such as EN 3875 (technical specification for brazing filler metals) and EN 2043 (general requirements for metallic products qualification).

Applications

• Aerospace Brazing: EN 3936 nickel-based filler metal is designed for joining nickel and cobalt-based heat-resistant alloys-common materials in aerospace engine components, turbine blades, and high-stress structural parts.
• High-Temperature Environments: Especially suitable for applications requiring durability at elevated temperatures and strong joint integrity, such as jet engines, rocket propulsion units, and exhaust systems.
• Component Repair and Manufacture: Widely used for assembling, repairing, or refurbishing aerospace parts where welding may not be feasible, providing a reliable metallurgical bond.
• Powder and Paste Options: Enable flexibility in brazing techniques, facilitating both automated powder feeding systems and manual or semi-automatic paste application.

Related Standards

• EN 3875 – Aerospace series metallic materials - Filler metal for brazing - Technical specification
  Defines in-detail testing, quality control, and performance criteria for brazing filler metals used alongside EN 3936.

• EN 2043 – Aerospace series metallic materials - General requirements for semi-finished product qualification
  Provides qualification procedures for materials supplied for aerospace manufacturing, applicable to nickel base filler metals.

• EN 4258 – Aerospace series metallic materials - General organization of standardization
  Explains the framework and linkage between various aerospace material standards including those relevant to filler metals.

• EN 4500-6 – Guidelines for drafting and presentation of material standards
  Ensures uniform documentation and presentation practices across different aerospace material standards.

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Adherence to SIST EN 3936:2002 helps aerospace manufacturers guarantee the performance, reliability, and safety of brazed joints in high-performance components. Its detailed material requirements and quality controls directly support critical aerospace production processes that demand precision and high thermal resistance.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Nickel base alloy NI-B21001 (NiCr15B4) - Filler metal for brazing - Powder or pasteLuft- und Raumfahrt - Nickelbasislegierung NI-B21001 (NiCr15B4) - Hartlot in Form von Pulver oder PasteSérie aérospatiale - Alliage base nickel NI-B21001 (NiCr15B4) - Métal d'apport de brasage - Poudre ou pâteAerospace series - Nickel base alloy NI-B21001 (NiCr15B4) - Filler metal for brazing - Powder or paste49.025.15Neželezove zlitine na splošnoNon-ferrous alloys in generalICS:Ta slovenski standard je istoveten z:EN 3936:2001SIST EN 3936:2002en01-januar-2002SIST EN 3936:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3936June 2001ICS 49.025.15English versionAerospace series - Nickel base alloy NI-B21001 (NiCr15B4) -Filler metal for brazing - Powder or pasteSérie aérospatiale - Alliage base nickel NI-B21001(NiCr15B4) - Métal d'apport de brasage - Poudre ou pâteLuft- und Raumfahrt - Nickelbasislegierung NI-B21001(NiCr15B4) - Hartlot in Form von Pulver oder PasteThis 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 3936:2001 ESIST EN 3936:2002

Page 2EN 3936:2001ForewordThis 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, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,Spain, Sweden, Switzerland and the United Kingdom.SIST
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