SIST EN 2950:2010
(Main)Aerospace series - Test method - Wrought heat resisting alloys Semi-finished products and parts - Conditions for macrographic and micrographic examination - Atlas of structures and defects
Aerospace series - Test method - Wrought heat resisting alloys Semi-finished products and parts - Conditions for macrographic and micrographic examination - Atlas of structures and defects
The present document defines the conditions for the macrographic and micrographic examination of heat resisting alloy semi-finished and parts.
It includes an atlas of commonly encountered and structural defects.
The present document shall be applied in conjunction with the material standards specifying the criteria of acceptance.
The present document is not intended to apply to cast or powder metallurgy products.
Luft- und Raumfahrt - Prüfverfahren - Umgeformte Erzeugnisse aus hochwarmfesten Legierungen - Prüfbedingungen für makrographische und mikrographische Untersuchung - Gefüge- und Fehleratlas
Série aérospatiale - Méthode d'essais - Demi-produits et pièces corroyés en alliage résistant à chaud - Conditions d'examens macrographique et micrographique - Atlas de structures et de défauts
Aeronavtika - Preskusna metoda - Gneteni polizdelki in deli iz zlitin, odpornih proti toploti - Pogoji za makrografski in mikrografski pregled - Atlas struktur in napak
Pričujoči dokument definira pogoje za makrografski in mikrografski pregled polizdelkov in delov iz zlitin, odpornih proti toploti. Vključuje atlas pogostih in strukturnih napak. Pričujoči dokument je treba uporabljati v povezavi z materialnimi standardi, ki opredeljujejo kriterije sprejemljivosti. Namen pričujočega dokumenta ni uporaba za lite metalurške proizvode ali metalurške proizvode v prahu.
General Information
- Status
- Published
- Publication Date
- 07-Mar-2010
- Technical Committee
- I13 - Imaginarni 13
- Current Stage
- 6060 - National Implementation/Publication (Adopted Project)
- Start Date
- 11-Sep-2008
- Due Date
- 16-Nov-2008
- Completion Date
- 08-Mar-2010
Overview
EN 2950:2008 - published by CEN - is an aerospace test method that defines the conditions for macrographic and micrographic examination of wrought heat‑resisting alloy semi‑finished products and parts. The standard provides procedural guidance, typical etching reagents and magnifications, and a normative atlas of common structures and defects (Annex A: macrographic references; Annex B: micrographic references). It is to be applied together with the relevant material standards that set acceptance criteria. EN 2950:2008 does not apply to cast or powder‑metallurgy products.
Key topics and technical requirements
- Scope and applicability
- Wrought heat‑resisting alloys: semi‑finished products and finished parts.
- Excludes cast and powder metallurgy products.
- Must be used in conjunction with material standards specifying acceptance criteria.
- Macrographic examination
- Surface examination in the delivery heat‑treatment condition (unless agreed otherwise).
- Surface preparation must avoid cold work or contamination.
- Macroetching reagents and conditions are listed (examples: HCl, FeCl3, H2SO4 electrolytic/chemical etches).
- Minimum illumination: 250 lux; magnification normally none, up to ×12 if required.
- Cut‑up (section) examination
- Plane sections taken per specification or order; cutting must not damage structure.
- Prefer electrochemical etching when possible; typical etchants provided.
- Micrographic examination
- Used to investigate anomalies seen macroscopically or when required by material standard.
- Surfaces polished to mirror finish free of cold work.
- Typical microetchants listed (examples: Nital, Murakami’s, Glyceregia, HF/glycerol).
- Optical microscopy minimum ×50; use same magnification as reference photomicrographs where possible.
- Reporting
- Results recorded per EN 2078: include photo identification, location, orientation, etch method and magnification.
Practical applications and who uses it
- Primary users
- Aerospace manufacturers, metallurgists, quality inspectors, NDT technicians, procurement and inspection engineers.
- Typical uses
- Incoming inspection of wrought heat‑resisting alloy bars, forgings, sheets and parts.
- Root‑cause analysis for structural anomalies (freckles, white spots, inclusions, recrystallization, grain flow, delta/sigma/Laves phases, incipient melting, cracks).
- Acceptance/rejection evidence when linked to material standard acceptance criteria.
- Value
- Standardizes visual and microscopic examination methods and provides visual references (atlas) for consistent defect identification and communication.
Related standards
- EN 2078 - inspection and test reporting (referenced as the reporting format to be used with EN 2950:2008)
Keywords: EN 2950:2008, aerospace, test method, wrought heat resisting alloys, macrographic examination, micrographic examination, atlas of defects, etching, inspection, semi‑finished products.
Frequently Asked Questions
SIST EN 2950:2010 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Test method - Wrought heat resisting alloys Semi-finished products and parts - Conditions for macrographic and micrographic examination - Atlas of structures and defects". This standard covers: The present document defines the conditions for the macrographic and micrographic examination of heat resisting alloy semi-finished and parts. It includes an atlas of commonly encountered and structural defects. The present document shall be applied in conjunction with the material standards specifying the criteria of acceptance. The present document is not intended to apply to cast or powder metallurgy products.
The present document defines the conditions for the macrographic and micrographic examination of heat resisting alloy semi-finished and parts. It includes an atlas of commonly encountered and structural defects. The present document shall be applied in conjunction with the material standards specifying the criteria of acceptance. The present document is not intended to apply to cast or powder metallurgy products.
SIST EN 2950:2010 is classified under the following ICS (International Classification for Standards) categories: 49.025.01 - Materials for aerospace construction in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN 2950:2010 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.Aeronavtika - Preskusna metoda - Gneteni polizdelki in deli iz zlitin, odpornih proti toploti - Pogoji za makrografski in mikrografski pregled - Atlas struktur in napakLuft- und Raumfahrt - Prüfverfahren - Umgeformte Erzeugnisse aus hochwarmfesten Legierungen - Prüfbedingungen für makrographische und mikrographische Untersuchung - Gefüge- und FehleratlasSérie aérospatiale - Méthode d'essais - Demi-produits et pièces corroyés en alliage résistant à chaud - Conditions d'examens macrographique et micrographique - Atlas de structures et de défautsAerospace series - Test method - Wrought heat resisting alloys Semi-finished products and parts - Conditions for macrographic and micrographic examination - Atlas of structures and defects49.025.01Materiali za letalsko in vesoljsko gradnjo na splošnoMaterials for aerospace construction in generalICS:Ta slovenski standard je istoveten z:EN 2950:2008SIST EN 2950:2010en01-april-2010SIST EN 2950:2010SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 2950August 2008ICS 49.025.01 English VersionAerospace series - Test method - Wrought heat resisting alloysSemi-finished products and parts - Conditions for macrographicand micrographic examination - Atlas of structures and defectsSérie aérospatiale - Méthode d'essais - Demi-produits etpièces corroyés en alliage résistant à chaud - Conditionsd'examens macrographique et micrographique - Atlas destructures et de défautsLuft- und Raumfahrt - Prüfverfahren - UmgeformteErzeugnisse aus hochwarmfesten Legierungen -Prüfbedingungen für makrographische undmikrographische Untersuchung - Gefüge- und FehleratlasThis European Standard was approved by CEN on 7 March 2008.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© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2950:2008: ESIST EN 2950:2010
Atlas of macrographic references.9 Annex B (normative)
Atlas of micrographic references.32
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