SIST EN 3267:2004

Overview

SIST EN 3267:2004 is a European standard developed by the European Committee for Standardization (CEN) that defines the specifications for bulkhead washers made from titanium alloy for aerospace applications. Titanium alloy washers are critical components used in aerospace engineering, providing strength, corrosion resistance, and weight savings essential to aircraft and spacecraft structural elements.

This standard ensures uniformity and quality in the manufacture and marking of bulkhead washers, facilitating compatibility and reliability in aerospace assemblies. It supports aerospace manufacturers and suppliers by defining dimensional, material, surface treatment, and quality assurance criteria for titanium alloy bulkhead washers.

Key Topics

• Scope and Purpose
  Specifies characteristics of bulkhead washers fabricated from titanium alloy specifically designed for aerospace use.

• Material Specifications
  Requires use of titanium alloys conforming to related standards such as EN 3311, EN 3314, and EN 3456, which cover titanium alloy bar, sheet, and strip forms.

• Dimensions and Configuration
  Outlines precise dimensions, mass, and geometric tolerances to ensure compatibility across aerospace components. Dimensional data applies post-anodizing surface treatment.

• Surface Treatment
  Mandates anodizing processes in accordance with EN 2808 to enhance corrosion resistance and performance under aerospace service conditions.

• Marking and Identification
  Establishes marking rules following EN 2424 to ensure clear traceability and identification of washers within aerospace assemblies.

• Quality Assurance
  Requires adherence to EN 2000 for manufacturing quality systems, promoting high reliability and conformity to aerospace production standards.

Applications

• Aircraft Bulkhead Assemblies
  Used in securing and sealing joints within aircraft fuselage and internal panel connections where titanium’s lightweight and corrosion resistance properties optimize structural integrity.

• Spacecraft Structural Components
  Suitable for use in spacecraft where the demanding combination of mechanical strength and resistance to harsh environments is essential.

• High-Performance Aerospace Fastening Systems
  Integral in locking and load distribution within aerospace fasteners, contributing to vibration resistance, weight reduction, and long-term durability.

Related Standards

• EN 3311, EN 3314, EN 3456 – Material standards for titanium alloy bars, sheets, and strips utilized for aerospace components.
• EN 2808 – Specifies anodizing requirements for titanium alloys enhancing corrosion protection.
• EN 2424 – Defines marking protocols for aerospace products, ensuring traceability.
• EN 2000 – Details quality assurance mechanisms for aerospace manufacturing, certifying product consistency.

Practical Benefits

• Standardized product quality and performance ensuring washers meet rigorous aerospace requirements.
• Interchangeability across aerospace systems due to uniform dimensional and material specifications.
• Enhanced corrosion resistance and durability from specified surface treatments.
• Traceability and certification compliance through mandated marking and quality assurance processes.

Adoption of SIST EN 3267:2004 guarantees aerospace manufacturers and suppliers a harmonized approach to production and quality control of titanium alloy bulkhead washers, contributing to safer, lighter, and more reliable aerospace designs.