EN 3942:2001

Aerospace series - Nickel base alloy NI-B41204 (NiCr13Si4B3) - Filler metal for brazing - Borided foil

This standard specifies the requirements relating to:
Nickel base alloy NI-B41204 (NiCr13Si4B3)
Filler metal for brazing
Borided foil
for aerospace applications.

Luft- und Raumfahrt - Nickelbasislegierung NI-B41204 (NiCr13Si4B3) - Hartlot in Form von borierte Folie

Série aérospatiale - Alliage base nickel NI-B41204 (NiCr13Si4B3) - Métal d'apport de brasage - Feuillard boruré

Aerospace series - Nickel base alloy NI-B41204 (NiCr13Si4B3) - Filler metal for brazing - Borided foil

General Information

• Status: Published
• Publication Date: 20-Feb-2001
• Withdrawal Date: 30-Aug-2001
• ICS: 49.025.15 - Non-ferrous alloys in general
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 4 - Metallic
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 01-Jun-2017
• Completion Date: 09-Feb-2026
• Ref Project: SIST EN 3942:2001 - Aerospace series - Nickel base alloy NI-B41204 (NiCr13Si4B3) - Filler metal for brazing - Borided foil

Relations

• Refers: 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: EN 60601-2-12:2006 - Medical electrical equipment - Part 2-12: Particular requirements for the safety of lung ventilators - Critical care ventilators
• Effective Date: 09-Feb-2026
• Referred By: EN ISO 10651-2:2009 - Lung ventilators for medical use - Particular requirements for basic safety and essential performance - Part 2: Home care ventilators for ventilator-dependent patients (ISO 10651-2:2004)
• Effective Date: 28-Jan-2026

Overview

EN 3942:2001 is a European standard developed by CEN that specifies the requirements for a specialized nickel base alloy known as NI-B41204 (NiCr13Si4B3). This alloy is designed as a filler metal in the form of borided foil, primarily intended for brazing processes within aerospace applications. The standard ensures that the filler metal meets critical material and performance criteria suitable for the demanding conditions encountered in aviation and space industries. EN 3942:2001 plays a crucial role in standardizing the use of brazing materials that enhance joint strength, corrosion resistance, and thermal stability.

Key Topics

• Nickel Base Alloy NI-B41204 (NiCr13Si4B3)
  This nickel chromium-based alloy incorporates silicon and boron elements, optimizing its properties for high-temperature brazing and durability in aerospace conditions.

• Filler Metal for Brazing
  The standard defines the composition and physical characteristics for filler metals used to join metal components through brazing, a critical process for creating reliable and robust aerospace assemblies.

• Borided Foil Form
  The alloy is supplied as a borided foil, a thin material layer enhanced with boron for improved wettability and bonding efficiency during the brazing process.

• Material Requirements
  Specifies chemical composition tolerances, mechanical properties, and quality benchmarks essential to ensure consistent performance.

• Applications in Aerospace
  Ensures compatibility and longevity in aerospace structural components subjected to extreme thermal and mechanical stresses.

Applications

• Aerospace Manufacturing
  Widely used in the fabrication and repair of aircraft components, including turbine engines, airframe parts, and heat exchangers requiring strong, corrosion-resistant joints.

• High-Temperature Components
  Suitable for brazing in environments with elevated temperatures due to the alloy’s enhanced thermal stability and resistance to oxidation.

• Precision Bonding
  The borided foil form allows for consistent layer thickness and precise application, supporting critical assemblies where joint integrity is vital.

• Maintenance and Repair
  Used in maintenance operations to restore aerospace parts utilizing brazing techniques that meet stringent safety and quality standards.

Related Standards

• EN ISO 17672 – Brazing - Filler metals
• EN 13445-1 – Non-ferrous alloys - General requirements
• AMS Standards – Aerospace material specifications related to nickel base alloys and brazing fillers
• ISO 18278 – Nickel and nickel alloys for aerospace applications

These related standards cover complementary aspects such as filler metal classifications, testing methods, and broader materials used in aerospace manufacturing, providing a framework ensuring interoperability and consistent quality.

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Keywords: EN 3942:2001, nickel base alloy, NI-B41204, NiCr13Si4B3, filler metal, brazing, borided foil, aerospace applications, brazing filler metal, aerospace materials, high-temperature alloys, nickel chromium alloy, aerospace brazing standard, CEN aerospace standard.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2001
Aerospace series - Nickel base alloy NI-B41204 (NiCr13Si4B3) - Filler metal for
brazing - Borided foil
Aerospace series - Nickel base alloy NI-B41204 (NiCr13Si4B3) - Filler metal for brazing -
Borided foil
Luft- und Raumfahrt - Nickelbasislegierung NI-B41204 (NiCr13Si4B3) - Hartlot in Form
von borierte Folie
Série aérospatiale - Alliage base nickel NI-B41204 (NiCr13Si4B3) - Métal d'apport de
brasage - Feuillard boruré
Ta slovenski standard je istoveten z: EN 3942:2001
ICS:
49.025.15 Neželezove zlitine na Non-ferrous alloys in general
splošno
2003-01.Slovenski inštitut za standardizaci
...