SIST EN 3683:2009
(Main)Aerospace series - Test methods - Titanium alloy wrought products - Determination of primary α content - Point count method and line intercept method
Aerospace series - Test methods - Titanium alloy wrought products - Determination of primary α content - Point count method and line intercept method
This standard specifies two methods, the point count method and the line intercept method, for optical microscope determination of primary content of titanium alloy wrought products, for aerospace applications.
Luft- und Raumfahrt - Prüfverfahren - Kneterzeugnisse aus Titanlegierungen - Bestimmung von Primär-α-Anteilen - Punktzählverfahren und Linienschnittverfahren
Diese Norm legt zwei Verfahren, und zwar das Punktzählverfahren und das Linienschnittverfahren, zur optisch-mikroskopischen Bestimmung von Primär Anteilen von Kneterzeugnissen aus Titanlegierung für die Luft- und Raumfahrt fest.
Série aérospatiale - Méthodes d'essais - Demi-produits corroyés en alliages de titane - Détermination de la teneur en α primaire - Méthode par comptage de points et méthode par interception de lignes
Aeronavtika - Preskusne metode - Gneteni izdelki iz titanove zlitine - Določevanje primarnega α-deleža - Metoda s štetjem točk in metoda s presekom premice
General Information
- Status
- Published
- Publication Date
- 20-May-2009
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 16-Apr-2009
- Due Date
- 21-Jun-2009
- Completion Date
- 21-May-2009
Overview
EN 3683:2007 (published as SIST EN 3683:2009) is a CEN aerospace-series standard that specifies two optical-microscopy test methods for determining the primary α (alpha) phase content in titanium alloy wrought products used in aerospace applications. The standard defines how to prepare samples, apply a point-count grid (Method A) or a line-intercept grid (Method B), calculate primary α content on the examined surface and report results with associated statistical uncertainty.
Key Topics and Requirements
- Scope: Optical microscope determination of primary α content in titanium alloy wrought products for aerospace use.
- Sample size and preparation: The metallographic section shall be at least 10 mm in diameter or square and prepared in accordance with EN 3114-001 (microstructure - general requirements).
- Method A - Point count method:
- Superimpose a specified point grid over the metallographic section.
- Count grid points enclosed by primary α particles; points on phase boundaries count as 0.5.
- Primary α fraction (Np) = number of points in α / total grid points.
- Statistical error calculation and multiple-location counts are recommended to improve accuracy.
- Method B - Line intercept method:
- Superimpose a specified line grid and measure lengths of grid lines intercepted by primary α.
- Primary α fraction (NL) = intercepted α line length / total grid line length.
- Counts should be taken in both grid directions; statistical treatment and averaging across locations are recommended.
- Magnification guidance: Select magnification so that individual primary α particles do not coincide with more than one grid point or be intersected more than once per direction.
- Reporting: Test report must reference EN 3683, identify material (manufacturer, designation, batch), sample location, preparation method, equipment and grid type, number of locations sampled, method used, individual/average results with statistical error, date and tester traceability, and any deviations or factors affecting results.
Applications and Users
EN 3683:2007 is used for:
- Quality control and acceptance testing of aerospace-grade titanium alloy wrought products.
- Metallurgical characterization during process development (forging, heat treatment).
- Supplier qualification, incoming inspection, and failure analysis in aerospace supply chains.
Primary users include:
- Aerospace OEMs and tiered suppliers
- Metallurgical and materials testing laboratories
- Quality assurance and NDT teams
- Materials engineers and research groups working with titanium alloys
Related Standards
- EN 3114-001 - Aerospace series: Microstructure of (α + β) titanium alloy wrought products - Part 001: General requirements (normative reference cited in EN 3683).
Keywords: EN 3683:2007, titanium alloy wrought products, primary alpha content, point count method, line intercept method, aerospace testing, optical microscopy, metallography, EN 3114-001.
Frequently Asked Questions
SIST EN 3683:2009 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Test methods - Titanium alloy wrought products - Determination of primary α content - Point count method and line intercept method". This standard covers: This standard specifies two methods, the point count method and the line intercept method, for optical microscope determination of primary content of titanium alloy wrought products, for aerospace applications.
This standard specifies two methods, the point count method and the line intercept method, for optical microscope determination of primary content of titanium alloy wrought products, for aerospace applications.
SIST EN 3683:2009 is classified under the following ICS (International Classification for Standards) categories: 49.025.30 - Titanium. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 3683:2009 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.SUHPLFHFKQLWWYHUIDKUHQ49.025.30TitanTitaniumICS:Ta slovenski standard je istoveten z:EN 3683:2007SIST EN 3683:2009en,de01-julij-2009SIST EN 3683:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3683March 2007ICS 49.025.30 English VersionAerospace series - Test methods - Titanium alloy wroughtproducts - Determination of primary a content - Point countmethod and line intercept methodSérie aérospatiale - Méthodes d'essais - Demi-produitscorroyés en alliages de titane - Détermination de la teneuren a primaire - Méthode par comptage de points etméthode par interception de lignesLuft- und Raumfahrt - Prüfverfahren - Kneterzeugnisse ausTitanlegierungen - Bestimmung von Primär-a-Anteilen -Punktzählverfahren und LinienschnittverfahrenThis European Standard was approved by CEN on 5 October 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3683:2007: ESIST EN 3683:2009
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