EN 3010:1998

Overview

EN 3010:1998 is a European standard developed by CEN for the aerospace industry, defining the characteristics of hexagon head bolts with relieved shank and long thread. These bolts are manufactured from heat-resistant nickel base alloy NI-P101HT (commonly known as Waspaloy). They are classified for use at a strength of 1 210 MPa at ambient temperature and can withstand temperatures up to 730°C, making them especially suitable for demanding aerospace environments.

The standard provides guidance and specifications for aerospace manufacturers, engineers, and suppliers, ensuring consistent quality and performance of critical fasteners in high-stress and high-temperature applications.

Key Topics

• Material Specification: Defines requirements for nickel base alloy NI-P101HT (Waspaloy), chosen for its superior heat resistance and mechanical strength.
• Bolt Design:
  • Hexagon head for secure fastening and torque delivery
  • Relieved shank to minimize stress concentration
  • Long thread to accommodate various aerospace assembly needs
• Mechanical Properties:
  • Minimum strength classification: 1 210 MPa at ambient temperature
  • High-temperature capability: Up to 730°C
• Dimensional Standards: Ensures interoperability and fit across diverse aerospace applications
• Marking and Traceability: Specifications for marking to ensure product identification and traceability within the supply chain

Applications

The bolts specified in EN 3010:1998 are primarily designed for aerospace use, where reliability, strength, and high-temperature resistance are essential. Typical applications include:

• Aircraft Engines: Fastening components exposed to intense heat and mechanical loads
• Gas Turbines: Securing hot section assemblies where nickel alloy bolts maintain integrity under thermal cycling
• Airframe Structures: Used in sections requiring reduced weight without compromising on strength and durability
• Spacecraft Assemblies: Critical connections subject to both extreme temperature variation and mechanical stress

By adhering to EN 3010:1998, manufacturers, maintenance teams, and engineers can ensure the safe and reliable operation of advanced aerospace systems, minimizing the risk of fastener failure under extreme conditions.

Related Standards

For a comprehensive approach to aerospace fasteners, consider the following related standards:

• EN 3009: Aerospace series - Bolts, hexagon head, in heat resisting nickel base alloys
• EN 2997: Aerospace series - Electrical circular connectors (for reference in assembly environments)
• ISO 898-1: Mechanical properties of fasteners made of carbon steel and alloy steel
• EN 3757: Aerospace series - Bolts, metric series, heat resistant

These standards complement EN 3010:1998, providing additional guidelines for fastener selection, material compatibility, and design integration within aerospace platforms.

Practical Value

Adopting EN 3010:1998 ensures:

• Consistent Quality: Standardized bolt characteristics streamline procurement and quality assurance
• Enhanced Safety: Bolts designed to withstand high stress and temperatures improve operational safety
• Global Compatibility: Compliance with recognized European standards facilitates international collaboration and supply chain efficiency in the aerospace sector

For manufacturers, operators, and engineers in aerospace, understanding and implementing EN 3010:1998 is essential for maintaining high standards of safety, reliability, and performance in high-temperature and high-stress environments.