EN 2338:2001

Overview

EN 2338:2001 is a European standard developed by CEN (European Committee for Standardization) that specifies the dimensions and tolerances for hot rolled titanium and titanium alloy sheets used in aerospace applications. The standard applies to sheets with thicknesses ranging from 0.8 mm to 6 mm. It is part of a broader series of aerospace metallic material standards aiming to harmonize technical specifications across European aerospace manufacturers, ensuring material quality and consistency.

This standard is essential for manufacturers, suppliers, and quality assurance professionals in the aerospace sector who handle titanium sheets, providing a unified reference for sheet dimensions, tolerances, and acceptable geometric deviations.

Key Topics

• Material Specification:

  • Hot rolled sheets in titanium and titanium alloys.
  • Thickness range between 0.8 mm and 6 mm for aerospace applications.

• Dimensional Specifications:

  • Detailed thickness, width, and length dimensions and corresponding tolerances.
  • Thickness tolerances vary depending on sheet thickness, ensuring precise control.

• Geometric Tolerances:

  • Squareness tolerance as measured by diagonal differences.
  • Lateral curvature, which can be concave or convex, is tightly controlled.
  • Flatness tolerances for both titanium and titanium alloy sheets with specific measurements depending on thickness and sheet size.

• Measurement Standards:

  • Methods for form deviation measurements referenced from EN 3848.
  • Strict tolerance limits specified for flatness, lateral curvature, and squareness to ensure shape integrity.

• Format and Mass:

  • Recommended typical sheet formats and mass per unit area provided for planning and logistical purposes.
  • Density assumed at 4.5 kg/dm³ for mass calculations.

Applications

• Primarily intended for aerospace manufacturing where titanium's strength-to-weight ratio and corrosion resistance are critical.
• Used in aircraft structural components, engine parts, and other aerospace elements requiring high-performance titanium sheets.
• The standardized dimensions and tolerances ensure interchangeability and compatibility across suppliers and manufacturers.
• Supports quality assurance and compliance in aerospace supply chains by defining clear standards for product acceptance.
• Useful for material procurement teams to specify consistent titanium sheet orders conforming to aerospace standards.

Related Standards

• EN 4258: General organization of aerospace metallic materials standardization; outlines the framework into which EN 2338 fits.
• EN 3848: Method of measuring form deviations; referenced for geometric tolerance verification.
• Other Aerospace Material Standards: The EN series includes additional documents specifying other forms and treatments of aerospace metals, supporting full lifecycle control of materials from production to application.

By aligning with EN 2338:2001, aerospace manufacturers can ensure high-quality hot rolled titanium sheets with precise dimensional control, which is critical to maintaining safety, reliability, and performance in aerospace structures and components. This standard facilitates uniform communication and compliance across the European aerospace industry and beyond.