EN 3928:1998

Overview

EN 3928:1998, titled "Aerospace series - Nickel base alloy NI-B40001 (NiSi5B3) - Filler metal for brazing - Tape," is a European standard issued by CEN. It specifies the requirements for nickel base alloy NI-B40001 (also known as NiSi5B3) in the form of tape, used as a filler metal for brazing in aerospace applications. This standard supports high-performance joining solutions essential for the fabrication and maintenance of complex aerospace components.

Key Topics

EN 3928:1998 covers several critical aspects necessary for the reliable use of nickel base alloy NiSi5B3 brazing tape in the aerospace industry:

• Material Requirements: Defines the composition and properties of the nickel base alloy NiSi5B3, ensuring consistency and high-quality brazing results.
• Product Form: Focuses on the use of NiSi5B3 as a tape, which enables precise application in automated and manual brazing operations.
• Brazing Performance: Specifies the expected reliability, flow characteristics, and compatibility with base materials commonly used in aerospace structures and assemblies.
• Quality Assurance: Establishes standards for quality control, manufacturing traceability, and conformity processes critical for aerospace safety and performance.

Applications

The EN 3928:1998 standard is highly relevant for professionals and organizations involved in the aerospace sector, particularly those engaged in:

• Aerospace Manufacturing: Utilization of NiSi5B3 brazing tape in the production of high-strength joints for engine components, airframe structures, and turbine assemblies.
• Component Repair and Maintenance: Adoption in maintenance, repair, and overhaul (MRO) operations where durable and reliable brazed joints are essential to restore or enhance performance.
• Advanced Engineering Projects: Application in the development and prototyping of aerospace parts requiring controlled, high-temperature joining methods.

By adhering to this standard, manufacturers and engineers can ensure that brazed joints in critical aerospace components meet stringent safety and performance expectations.

Related Standards

Compliance and integration with other international aerospace standards ensure the reliability and interoperability of products. Related standards include:

• EN 2267: Aerospace series - Cables, electrical, for general-purposes
• EN 2997: Aerospace series - Connectors, electrical, circular, general purpose
• EN 2404: Aerospace series - Brazing - Filler metals - Technical delivery conditions
• ISO 1071: Brazing - Filler metals - Classification and composition

These standards complement EN 3928:1998 by covering materials, connectors, and technical delivery conditions relevant to aerospace assemblies and operations.

EN 3928:1998 plays a vital role in the aerospace industry by providing standardized requirements for high-performance nickel-based brazing fillers in tape form. Its implementation ensures quality, safety, and durability in demanding aerospace environments, supporting both manufacturing excellence and long-term reliability of aircraft components.