EN 2483:2010

Overview

EN 2483:2010 is a European standard developed by CEN that specifies the stringent requirements for Steel FE-PL2108 (36NiCrMo16) forgings used in aerospace applications. This standard targets steel forgings with a tensile strength (Rm) ranging from 1,100 MPa to 1,300 MPa and a maximum outer diameter (De) of 100 mm. The steel grade FE-PL2108 is a low-alloy, high-strength steel specifically tailored for the aerospace sector, ensuring optimal performance under demanding mechanical and environmental conditions.

This standard is part of the wider aerospace series standards that regulate metallic materials, ensuring consistency, reliability, and safety in aerospace components manufacturing. It encompasses chemical composition, mechanical properties, production methods, heat treatment, and stringent inspection requirements that aerospace parts must meet.

Key Topics

• Material Specification

  • Steel Grade: FE-PL2108 (36NiCrMo16)
  • Chemical Composition: Carbon (0.30-0.40%), Chromium (1.60-2.00%), Molybdenum (0.25-0.60%), Nickel (3.50-4.20%), with precise limits on elements like silicon, manganese, phosphorus, and sulfur.
  • Melting Method: Air melted.

• Mechanical Properties

  • Tensile strength (Rm): 1,100 to 1,300 MPa
  • Proof stress (Rp0.2): Minimum 900 MPa
  • Elongation (A): Minimum 10%
  • Reduction of area (Z): Minimum 40%
  • Hardness: 331-388 HB or 350-410 HV for hardening and tempering conditions
  • Impact strength (KV): Minimum 25 J at ambient temperature

• Forgings and Dimensions

  • Forgings only, with outer diameter (De) up to 100 mm
  • Delivery Conditions: Annealed; Hardened and tempered heat treatments (860 °C ≤ θ ≤ 890 °C followed by quenching and tempering ≥ 560 °C)

• Testing and Inspection

  • Includes ultrasonic inspection per EN 4050-4 for internal defects
  • Dimensional and hardness inspections following aerospace-specific protocols
  • Requirements for grain size, cleanliness, and absence of defects per EN 4700-006

• Standard Compliance and Usage

  • Developed by ASD-STAN under the Aerospace and Defence Industries Association of Europe
  • Adopted as national standards across numerous European countries
  • Designed in accordance with EN 4500-5 and linked to the general organization standard EN 4258

Applications

EN 2483:2010 steel forgings are critical in aerospace manufacturing where high-strength, durability, and reliability of components are non-negotiable. Typical applications include:

• Structural aerospace components subjected to high mechanical stress
• Engine and landing gear parts requiring superior toughness and fatigue resistance
• Precision forgings for aircraft and spacecraft assemblies where tight dimensional tolerances are mandatory
• Aerospace fastener components, shafts, or fittings made from low-alloy steel with exceptional mechanical properties

This standard enables manufacturers to produce components that meet the rigorous demands of the aerospace industry, supporting safety, performance, and long service life.

Related Standards

• EN 4700-006: Technical specifications for steel forgings related to aerospace, covering pre-production and production stages.
• EN 4050-4: Ultrasonic inspection method specifying acceptance criteria for aerospace metallic materials.
• EN 4258: General organization of aerospace metallic material standards, providing contextual linkage for EN 2483.
• EN 4500-5: Framework and drafting rules for aerospace materials standards, ensuring consistency across steel standards.

These linked standards provide comprehensive guidance for aerospace material quality, inspection, testing procedures, and manufacturing consistency.

Keywords: EN 2483:2010, Steel FE-PL2108, 36NiCrMo16, aerospace forgings, high-strength steel, tensile strength, aviation steel standard, aerospace material specification, aerospace steel forgings, forged steel for aerospace.