EN 2728:2018
(Main)Aerospace series - Aluminium alloy AL-C42101 - T6 - Sand casting - a ≤ 20 mm
Aerospace series - Aluminium alloy AL-C42101 - T6 - Sand casting - a ≤ 20 mm
This European Standard specifies the requirements relating to:
Aluminium alloy AL-C42101
T6
Sand casting
a ≤ 20 mm
for aerospace applications.
Luft- und Raumfahrt - Aluminiumlegierung AL-C42101 - T6 - Sandgußstück - a ≤ 20 mm
Série aérospatiale - Alliage d'aluminium AL-C42101 - T6 - Pièce moulée en sable - a ≤ 20 mm
La présente Norme européenne spécifie les exigences relatives à :
Alliage d'aluminium AL-C42101
T6
Pièce moulée en sable
a ≤ 20 mm
pour applications aérospatiales.
Aeronavtika - Aluminijeva zlitina AL-C42101 - T6 - Litje v pesek - a ≤ 20 mm
Ta evropski standard določa zahteve za:
aluminijeve zlitine AL-C42101,
T6
(litje v pesek)
a ≤ 20 mm
za uporabo v aeronavtiki.
General Information
- Status
- Published
- Publication Date
- 20-Nov-2018
- Withdrawal Date
- 30-May-2019
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 4 - Metallic
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 21-Jan-2024
- Completion Date
- 11-Feb-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 2728:2018 is a European aerospace material standard published under CEN/ASD‑STAN that defines requirements for aluminium alloy AL‑C42101 in the T6 condition produced by sand casting with a maximum wall/thickness dimension a ≤ 20 mm. The standard targets aerospace part manufacture and inspection, specifying chemical composition limits, mechanical properties (typical tensile and hardness values), heat treatment (T6) and testing/delivery conventions for sand‑cast components used in aerospace applications.
Key topics and requirements
- Material designation: Aluminium alloy AL‑C42101 (corresponds to ISO AlSi7Mg0,3; similar to AA A356.0).
- Casting method and size: Sand casting; limit dimension a ≤ 20 mm.
- Heat treatment / delivery condition: T6 (specified heat treatment; delivery condition code U). Manufacturer may use a polymer quench to ~30 °C unless purchaser specifies otherwise.
- Chemical composition (typical limits):
- Si: 6.5–7.5%
- Mg: ~0.25–0.45%
- Fe ≤ 0.15%, Cu ≤ 0.05%, Mn ≤ 0.05%, Zn ≤ 0.07%, Ti ≤ 0.25%
- Other elements: individual ≤ 0.03%, total others ≤ 0.10%
- Mechanical properties (indicative):
- Proof stress Rp0.2: ≥ 200 MPa (as specified)
- Ultimate tensile strength Rm: ~260 MPa
- Elongation: generally low (typical 3–4%), with caveat that properties may vary within castings
- Typical hardness: HB ~80
- Testing and inspection: Test-piece types, sampling, and inspection procedures refer to EN 2076‑3 (pre‑production and production castings). External/internal defect criteria and batch uniformity follow EN 2076‑3.
- Notes: Tensile properties may not be uniformly achievable across all castings - drawing-specific requirements take precedence. Product qualification programs are to be agreed between manufacturer and purchaser.
Applications and users
- Intended use: Structural and non-structural sand‑cast aerospace components where a medium‑strength, heat‑treatable Al‑Si‑Mg alloy is suitable and maximum section thickness is ≤ 20 mm.
- Who uses this standard:
- Aerospace materials engineers and metallurgists
- Casting foundries producing aerospace parts
- Design and structural engineers specifying materials for parts
- Quality assurance, inspection and procurement teams ensuring compliance
- Certification and qualification bodies for aerospace supply chains
Related standards
- EN 2076‑3 - Aerospace series: ingots and castings - technical specification (pre‑production and production castings)
- EN 4258 - Organization of aerospace metallic material standards
- EN 4500‑2 - Rules for drafting aluminium/magnesium material standards
Keywords: EN 2728:2018, AL‑C42101, aluminium alloy, T6, sand casting, aerospace standard, a ≤ 20 mm, EN 2076‑3, AlSi7Mg0,3, A356.0.
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Frequently Asked Questions
EN 2728:2018 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Aluminium alloy AL-C42101 - T6 - Sand casting - a ≤ 20 mm". This standard covers: This European Standard specifies the requirements relating to: Aluminium alloy AL-C42101 T6 Sand casting a ≤ 20 mm for aerospace applications.
This European Standard specifies the requirements relating to: Aluminium alloy AL-C42101 T6 Sand casting a ≤ 20 mm for aerospace applications.
EN 2728:2018 is classified under the following ICS (International Classification for Standards) categories: 49.025.20 - Aluminium. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 2728:2018 has the following relationships with other standards: It is inter standard links to EN 4258:2024, EN 2076-3:1989. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 2728:2018 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.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 2728:2018SIST EN 2728:2019en,fr,de01-januar-2019SIST EN 2728:2019SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 2728
November
t r s z ICS
v {ä r t wä t r English Version
Aerospace series æ Aluminium alloy ALæC v t s r s æ T x æ Sand casting æ a ≤
t r mm Série aérospatiale æ Alliage d 5aluminium ALæC v t s r s æ T x æ Pièce moulée en sable æ a ≤
t r mm
Luftæ und Raumfahrt æ Aluminiumlegierung ALæC v t s r s æ T x æ Sandgußstück æ a ≤
t r mm This European Standard was approved by CEN on
t v September
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
t y t zã t r s z ESIST EN 2728:2019
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