1、ICS 81.060.30Advanced technical ceramicsMechanical properties of monolithic ceramics at room temperaturePart 4: Vickers, Knoop and Rockwell superficial hardnessEnglish version of DIN EN 843-4Hochleistungskeramik Mechanische Eigenschaften monolithischer Keramik bei Raumtemperatur Teil 4:Hrteprfung na
2、ch Vickers, Knoop und RockwellNational forewordThis standard has been prepared by CEN/TC 184 Advanced technical ceramics (Secretariat: UnitedKingdom).The responsible German body involved in its preparation was the Normenausschuss Materialprfung(Materials Testing Standards Committee), Technical Commi
3、ttee NMP 291 Hochleistungskeramik Monolithische Werkstoffe.The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are asfollows:ISO Standard DIN StandardISO 9385 DIN ISO 9385ISO 14705 DIN EN 843-4AmendmentsThis standard differs from DIN V ENV 843-4, October
4、1994 edition, as follows:a) The normative references have been updated.b) Hardness is now expressed in the SI unit Gigapascal for Vickers and Knoop hardness testing.c) For the Vickers hardness test, the maximum thickness of coatings for translucent or transparentceramics has been reduced from less t
5、han 2 mm to less than 0,2 mm (subclause 5.5).d) For the Knoop hardness test, the required number of indentations made when calibrating the testmachine has been reduced from three to one (subclause 6.2).e) The error in measurement for the Knoop test at HK 0,2 has been increased (subclause 6.5).f) Two
6、 figures each for Vickers and Knoop hardness testing have been included, giving guidelines foracceptance and rejection of indentations and criteria for using cross-hair measurement systems.g) Additions have been made to informative Annex A on interlaboratory evaluation of hardness testmethods.h) Add
7、itions have been made to the bibliography.i) The standard has been editorially revised.DEUTSCHE NORM August 2005DIN EN 843-4 No part of this standard may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e.V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the excl
8、usive right of sale for German Standards (DIN-Normen).English price group 12www.din.dewww.beuth.de9658217Continued overleaf.Document comprises 22 pages.11.05G4G15G71G88G23G5Supersedes DIN V ENV 843-4,October 1994 edition.Previous editionDIN V ENV 843-4: 1994-10National Annex NA(informative)Bibliogra
9、phyDIN ISO 9385 Glass and glass-ceramics Knoop hardness test (ISO 9385:1990)Page 2DIN EN 843-4:2005-08English versionICS 81.060.30Advanced technical ceramicsMechanical properties of monolithic ceramics atroom temperaturePart 4: Vickers, Knoop and Rockwell superficial hardness 2005. CEN All rights of
10、 exploitation in any form and by any meansreserved worldwide for CEN national members.Ref. No. EN 843-4:2005 EHochleistungskeramik MechanischeEigenschaften monolithischer Keramikbei Raumtemperatur Teil 4: Hrte-prfung nach Vickers, Knoop undRockwellThis European Standard was approved by CEN on 2005-0
11、4-29.CEN members are bound to comply with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard the status of anational standard without any alteration.Up-to-date lists and bibliographical references concerning such national stand-ards may be obtained o
12、n application to the Management Centre or to anyCEN member.The European Standards exist in three official versions (English, French, German).A version in any other language made by translation under the responsibility of aCEN member into its own language and notified to the Management Centre hasthe
13、same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, theCzech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands,Norway, Poland, Portugal, Slov
14、akia, Slovenia, Spain, Sweden, Switzerland, andthe United Kingdom.EN 843-4June 2005Management Centre: rue de Stassart, 36 B-1050 BrusselsEuropean Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungCramiques techniques avances Proprits mcaniques des crami-ques mo
15、nolithiques tempratureambiante Partie 4: Essais de duretVickers, Knoop et Rockwell superficielSupersedes ENV 843-4:1994.Page 2EN 843-4:2005Page 3EN 843-4:2005Page 4EN 843-4:2005Page 5EN 843-4:2005Page 6EN 843-4:2005Page 7EN 843-4:2005Page 8EN 843-4:2005Page 9EN 843-4:2005Page 10EN 843-4:2005Page 11EN 843-4:2005Page 12EN 843-4:2005Page 13EN 843-4:2005Page 14EN 843-4:2005Page 15EN 843-4:2005Page 16EN 843-4:2005Page 17EN 843-4:2005Page 18EN 843-4:2005Page 19EN 843-4:2005Page 20EN 843-4:2005
