EN 3364:2022
(Main)Aerospace series - Steel X5CrNiCu15-5 (1.4545) - Consumable electrode remelted, softened - Forging stocks - a or D ≤ 300 mm
General Information
- Abstract
This document specifies the requirements relating to:
Steel X5CrNiCu15-5 (1.4545)
Consumable electrode remelted, softened
Forging stocks
a or D ≤ 300 mm
for aerospace applications.
- Status
- Published
- Publication Date
- 20-Dec-2022
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 4/S 3 - Steels & Heat Resisting Alloys
- Current Stage
- 6060 - Definitive text made available (DAV) - Publishing
- Start Date
- 21-Dec-2022
- Completion Date
- 21-Dec-2022
Overview
EN 3364:2022 is a CEN aerospace-series material standard that specifies requirements for Steel X5CrNiCu15‑5 (1.4545) supplied as consumable‑electrode remelted, softened forging stocks with a or D ≤ 300 mm. It is intended for aerospace applications and defines chemical composition, production method, delivery condition, heat treatment options and key mechanical and quality criteria for forgings.
Key topics and technical requirements
- Material designation: X5CrNiCu15‑5 (1.4545) - composition limits are given for C, Si, Mn, P, S, Cr, Ni, Cu, Nb+Ta and Fe (balance).
- Melting method: Consumable electrode remelted (improved cleanliness and homogeneity).
- Form & size: Forging stock, maximum characteristic dimension a or diameter D ≤ 300 mm.
- Delivery condition: Softened (delivery condition code U).
- Heat treatments: Solution treatment 1 025–1 055 °C, t ≥ 30 min, air cool (or oil quench) to ≤ 30 °C, followed by precipitation treatment:
- Test A: 565–595 °C, t ≥ 4 h, air cool
- Test B: 465–495 °C, t ≥ 1 h, air cool
- Mechanical properties (representative ranges): Standard defines two test conditions (Test A and Test B). Example values include proof stress (Rp0.2) in the order of 1 000–1 170 MPa, tensile strength (Rm) ≈ 1 170–1 310 MPa, elongation A% ≈ 5–11%, reduction of area Z ≈ 15–45%, and Brinell hardness ranges depending on condition (see table in EN 3364:2022).
- Microstructure and cleanliness: δ‑ferrite ≤ 2%; inclusion content Category 4; macrostructure and internal imperfection acceptance levels specified (visual testing VT, ultrasonic testing UT class 3 for internal defects).
- Testing & samples: Forged sample preparation per EN 2957; technical specification and inspection/testing per EN 2157‑2. Product qualification per EN 2043.
Applications and users
- Primary use: Specification for aerospace forging stock where corrosion resistance, high strength and predictable heat‑treatment response are required (rotating parts, structural forgings, landing‑gear components, etc.).
- Who uses it: Aerospace material engineers, procurement/specification writers, forging manufacturers, metallurgists, quality/inspection teams, and certification bodies involved in aerospace component manufacture and supply chains.
Related standards
- EN 2157‑2 - Forging stock technical specification and inspection
- EN 2957 - Preparation of forged samples
- EN 2043 - Semi‑finished product qualification
- EN 4258 and EN 4500‑005 - Organization and drafting rules for aerospace metallic material standards
Keywords: EN 3364:2022, X5CrNiCu15‑5, 1.4545, aerospace steel, forging stocks, consumable electrode remelted, softened, heat treatment, mechanical properties, standards.
Relations
- Effective Date
- 15-Sep-2021
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
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Frequently Asked Questions
EN 3364:2022 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Steel X5CrNiCu15-5 (1.4545) - Consumable electrode remelted, softened - Forging stocks - a or D ≤ 300 mm". This standard covers: This document specifies the requirements relating to: Steel X5CrNiCu15-5 (1.4545) Consumable electrode remelted, softened Forging stocks a or D ≤ 300 mm for aerospace applications.
This document specifies the requirements relating to: Steel X5CrNiCu15-5 (1.4545) Consumable electrode remelted, softened Forging stocks a or D ≤ 300 mm for aerospace applications.
EN 3364:2022 is classified under the following ICS (International Classification for Standards) categories: 49.025.10 - Steels. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 3364:2022 has the following relationships with other standards: It is inter standard links to EN 3364:2007, EN 2957:2019, EN 2157-2:1993, EN 2043:2013, EN 2816:2019. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 3364:2022 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.