EN 2815:2009

Overview

EN 2815:2009 is a European standard developed by CEN for the aerospace industry, specifying requirements for steel FE-PM1802 (X5CrNiCu15-5). This steel is consumable electrode remelted, solution treated, and precipitation treated, provided in bars for machining with a or D ≤ 200 mm and ultimate tensile strength (Rm) ≥ 965 MPa. The standard ensures high-quality material selection to meet the demanding needs of aerospace applications, focusing on reliability, mechanical performance, and consistency.

Key Topics

EN 2815:2009 covers several essential aspects relevant to aerospace material engineers and manufacturers:

• Material Designation: Steel FE-PM1802 (X5CrNiCu15-5), known for its combination of corrosion resistance, strength, and machinability.
• Manufacturing Method: Consumable electrode remelting process, improving material cleanliness and homogeneity.
• Heat Treatment: Solution treated and precipitation hardened to achieve defined mechanical properties.
• Product Form: Bar stock intended for machining, with maximum diameter or thickness up to 200 mm.
• Mechanical Properties:
  • Ultimate tensile strength (Rm) ≥ 965 MPa
  • Proof stress (Rp0,2) ≥ 790 MPa
  • Elongation ≥ 12% for smaller dimensions
• Microstructural Requirements: Detailed in EN 4436, ensuring δ-ferrite content below 2% and appropriate grain size.
• Inspection and Testing: Compliance with EN 4700-002 for quality verification, covering factors like micro-cleanliness and macrostructure.
• Marking and Qualifications: Requirements for marking, dimensional inspection, and product qualification (EN 2043).

Applications

EN 2815:2009 steel bars are vital for critical aerospace components that demand high strength, durability, and machinability. Key applications include:

• Aircraft structural parts: Utilized in components subject to high mechanical loads.
• Landing gear elements: Where both toughness and fatigue resistance are essential.
• Machined fittings: Precision parts requiring excellent surface finish and dimensional stability.
• Fasteners and shafts: Demanding both corrosion resistance and substantial mechanical strength.
• Aerospace assemblies: Suited for parts operating in harsh environments or requiring high performance.

The standard supports the use of high-quality steel bars in environments where safety standards and performance requirements are paramount, such as commercial airliners, military aircraft, and space vehicles.

Related Standards

For full compliance and optimal use of EN 2815:2009, several related European standards should be considered:

• EN 2043: General requirements for semi-finished product qualification (excluding forgings and castings).
• EN 4258: Organization of metallic material standards in the aerospace series.
• EN 4436: Test methods for determining δ ferrite content in steels.
• EN 4500-5: Rules for drafting and presentation of material standards specific to steels.
• EN 4700-002: Technical specifications for wrought steel and heat-resistant alloy products, especially bars and sections.

By referencing these standards alongside EN 2815:2009, organizations can ensure consistent quality management, traceability, and regulatory compliance for aerospace steel products.

Keywords: EN 2815:2009, aerospace steel bar, FE-PM1802, X5CrNiCu15-5, consumable electrode remelted steel, solution treated steel, precipitation treated steel, aerospace standards, mechanical properties, CEN, European standard, aviation materials, high strength steel, bar for machining.