SIST EN 3833:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Bolts, MJ threads, in heat resisting nickel base alloy NI-PH2601 (Inconel 718) - Classification: 1 550 MPa (at ambient temperature) / 650°C - Technical specificationsAerospace series - Bolts, MJ threads, in heat resisting nickel base alloy NI-PH2601 (Inconel 718) - Classification: 1 550 MPa (at ambient temperature) / 650°C - Technical specifications49.030.20Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:Ta slovenski standard je istoveten z:EN 3833:2003SIST EN 3833:2004en01-maj-2004SIST EN 3833:2004SLOVENSKI
STANDARD



SIST EN 3833:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 3833January 2003ICS 49.030.20English versionAerospace series - Bolts, MJ threads, in heat resisting nickelbase alloy NI-PH2601 (Inconel 718) - Classification: 1 550 MPa(at ambient temperature) / 650°C - Technical specificationsThis European Standard was approved by CEN on 2 June 2002.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 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 Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 3833:2003 ESIST EN 3833:2004



EN 3833:2003 (E)2ContentspageForeword.31Scope.32Normative references.33Definitions.43.1Batch.43.2Surface discontinuities.43.3Test temperature.43.4Simple random sampling.43.5Critical defect.43.6Major defect.43.7Minor defect.43.8Sampling plan.53.9Limiting quality.53.10Acceptable quality level (AQL).53.11Finished bolt.53.12Definition document.54Quality assurance.64.1Qualification.64.2Acceptance.65Requirements.6Annex A (normative)
Passivation treatment for bolts.25A.1Pre-treatment.25A.2Passivation.25A.3Water rinse.25A.4Finish.25Annex B (informative)
Tensile, stress rupture and tension fatigue - Areas and loads formulae.26B.1Cross sectional area values.26B.2Formulae.26SIST EN 3833:2004



EN 3833:2003 (E)3ForewordThis document (EN 3833:2003) has been prepared by the European Association of Aerospace Manufacturers –Standardization (AECMA-STAN).After enquiries and votes carried out in accordance with the rules of this Association, this Standard has receivedthe approval of the National Associations and the Official Services of the member countries of AECMA, prior to itspresentation to CEN.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by July 2003, and conflicting national standards shall be withdrawn at the latest byJuly 2003.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.1 ScopeThis standard specifies the characteristics, qualification and acceptance requirements for bolts with MJ threads inNI-PH2601.Classification: 1 550 MPa 1) /650 °C 2)It is applicable whenever referenced.2 Normative referencesISO 2859-1Sampling procedures for inspection by attributes – Part 1: Sampling schemes indexed byacceptance quality limit (AQL) for lot-by-Iot inspectionISO 3452Non-destructive testing – Penetrant inspection – General principlesISO 3534Statistics – Vocabulary and symbolsISO 4288Geometrical Product Specifications (GPS) – Surface texture: Profile method – Rules andprocedures for the assessment of surface textureISO 5855-2Aerospace – MJ threads – Part 2: Limit dimensions for bolts and nutsISO 6508Metallic materials – Hardness test – Rockwell test (scales A -B -C -D- E -F -G -H -K)ISO 6892Metallic materials – Tensile testing at ambient temperatureISO 7961Aerospace – Bolts – Test methodsISO 9227Corrosion tests in artificial atmospheres – Salt spray tests
1)Minimum tensile strength of the material at ambient temperature2)Maximum test temperature of the partsSIST EN 3833:2004



EN 3833:2003 (E)4EN 3042Aerospace series – Quality assurance – EN aerospace products – Qualification procedureASTM E 112-88Standard Test Methods for Determining Average Grain Size 3)3 DefinitionsFor the purposes of this standard, the following definitions apply.3.1 BatchQuantity of finished bolts, of the same type and same diameter, produced from a material obtained from the samemelt, manufactured in the course of the same production cycle, following the same manufacturing route and havingundergone all the relevant heat treatments and surface treatments3.2 Surface discontinuities3.2.1 Crack : rupture in the material which may extend in any direction and which may be intercrystalline ortranscrystalline in character3.2.2 Seam : open surface defect3.2.3 Lap : surface defect caused by folding over metal fins or sharp corners and then compressing them into thesurface3.2.4 Inclusions : non-metallic particles originating from the material manufacturing process. These particlesmay be isolated or arranged in strings.3.3 Test temperatureAmbient temperature, unless otherwise specified3.4 Simple random samplingThe taking of n items from a population of N items in such a way that all possible combinations of n items have thesame probability of being chosen 4)3.5 Critical defectA defect that, according to judgement and experience, is likely to result in hazardous or unsafe conditions forindividuals using, maintaining, or depending upon the considered product, or that is likely to prevent performance ofthe function of a major end item 4)3.6 Major defectA defect, other than critical, that is likely to result in a failure or to reduce materially the usability of the consideredproduct for its intended purpose 4)3.7 Minor defectA defect that is not likely to reduce materially the usability of the considered product for its intended purpose, orthat is a departure from established specification having little bearing on the effective use or operation of thisproduct 4)
3)Published by : American Society for Testing and Materials (ASTM), 1916 Race street, Philadelphia, PA 19103-1187, USASIST EN 3833:2004



EN 3833:2003 (E)53.8 Sampling planA plan according to which one or more samples are taken in order to obtain information and possibly to reach adecision 4)3.9 Limiting qualityIn a sampling plan, the quality level which corresponds to the specified 10 % probability of acceptance3.10 Acceptable quality level (AQL)A quality level which in a sampling plan corresponds to a specified but relatively high probability of acceptanceIt is the maximum per cent defective (or the maximum number of defects per hundred units) that, for purposes ofsampling inspection can be considered satisfactory as a process average 4).3.11 Finished boltA bolt ready for use, inclusive of any possible treatments and/or surface coatings, as specified in the productstandard or definition document3.12 Definition documentDocument specifying all the requirements for finished bolts
4)Definition taken from ISO 3534SIST EN 3833:2004



EN 3833:2003 (E)64 Quality assurance4.1 QualificationEN 3042Qualification inspections and tests (requirements, methods, numbers of bolts) are specified in table 1.They shall be carried out on :- each type and diameter of bolt ;- 25 bolts selected from a single batch by simple random sampling.The test programme may possibly be reduced, or the qualification be granted without inspection or testing: anysuch decision shall be based on the results obtained on similar types and diameters of bolts provided that thedesign and manufacturing conditions are identical.Table 2 indicates the allocation of bolt samples for the inspections and tests.4.2 Acceptance4.2.1 PurposeThe purpose of acceptance inspections and tests is to check, as simply as possible, by a method representative ofactual use conditions, with the uncertainty inherent to statistical sampling, that the bolts constituting the batchsatisfy the requirements of this standard.4.2.2 ConditionsAcceptance inspections and tests (requirements, methods, numbers of bolts) are specified in table 1. They shall becarried out on each batch. Bolts from the batch to be tested shall be selected by simple random sampling.Each bolt may be submitted to several inspections or tests.If a more stringent inspection is deemed necessary, all or part of the qualification inspections and tests may beperformed during the acceptance inspection and testing. In this case, the number of bolts submitted to theseinspections and tests is the same as that submitted for qualification inspection and tests.4.2.3 ResponsibilityAcceptance inspections and tests shall be carried out by the manufacturer, or under his responsibility.4.2.4 Inspection and test reportA test report showing actual numerical values shall be provided if specified in the purchase order.5 RequirementsSee Table 1.SIST EN 3833:2004



EN 3833:2003 (E)7Table 1 : Technical requirements and test methodsClauseCharacteristicRequirementInspection and test methodQ/A 1)Sample sizeQ5.1MaterialIn accordance with the productstandard or definition documentChemical analysis or certificate ofcompliance issued by themanufacturer of the semi-finishedproductA255.2Dimensions,tolerances andtolerances ofform andpositionIn accordance with the productstandard or definition documentStandard gaugingQATables 3 and 45.3ManufacturingQ5.3.1ForgingThe head of the bolts shall beformed by hot or cold forging. Ifhot forged, the forgingtemperature shall be between 1040 °C and 1 080 °C and theyshall be air cooled.The equipment shall ensure auniform temperature throughoutthe batch.The method of forming shall beindicated.Q5.3.2Heat treatmentThe heat treatment medium oratmosphere shall not cause anysurface contamination except aspermitted by 5.5.6.Any scale which will not beremoved by subsequentmachining shall be removed byabrasive blasting with anappropriate equipment.The headed blanks shall besolution treated at a temperatureof 930 °C to 1 010 °C, held atthe selected temperature within± 15 °C for not less than 1 h andair cooled or faster.The headed and solution treatedblanks shall be precipitation heattreated at (720 ± 5) °C, held attemperature for 8 h ± 15 min,furnace cooled at (55 ± 5) °C perhour to (620 ± 5) °C, held at 620°C for 8 h ± 15 min, followed byair cooling or faster.Instead of the 55 °C per hourcooling rate to 620 °C, partsmay be furnace cooled at anyrate provided the time at 620 °Cis adjusted to give a totalprecipitation of time of 18 h min.Calibration of the heat treatmentequipment shall be confirmed.Visual examinationExamination of the heat treatmentspecificationcontinuedSIST EN 3833:2004



EN 3833:2003 (E)8Table 1 (continued)ClauseCharacteristicRequirementInspection and test methodQ/A 1)Sample size5.3.3Removal ofsurfacecontamination bymachiningAfter solution and precipitationtreatment the headed blanksshall have the shank andbearing surface of the headmachined :a) for the removal of allsurface contamination andoxide penetration ;b) to obtain a clean smoothsurface.The amount of materialremoved (see figure 1 ) shallbe as little as practicable butshall not exceed the limits oftable 5See 5.5.6See 5.5.1Q25ATables 3 and 45.3.4Head to shankfilletAfter completion of heattreatment and machining, theunderhead fillet radius shall becold rolled to remove all visualsigns of machining and tocreate cold working.This may cause distortionwhich shall not exceed thevalues in figure 2, unlessotherwise specified on theproduct standard or definitiondocument.For parts with compound radiibetween head and shank (e.g.T head bolts), cold work onlythe radius that blends with thehead, however it is acceptablefor cold work to extend overthe compound radius.The fillet shall not show seamsor inclusions (see table 6)Dimensional check (see5.2) and visualexaminationQ5.3.5ThreadsShall be formed by a singlerolling process after full heattreatment (see figure 3)Q35.3.6SurfaceroughnessIn accordance with the productstandard or definitiondocumentISO 4288Visual examinationATables 3 and 4Q55.3.7PassivationtreatmentUncoated finished bolts shallbe passivated in accordancewith annex A.After 2 h of salt spray, boltsshall show no evidence ofcorrosion or staining.ISO 9227Visual examinationA100 %Q35.3.8Surface coatingIn accordance with the productstandard or definitiondocumentSee applicable coating standardATables 3 and 4continuedSIST EN 3833:2004



EN 3833:2003 (E)9Table 1 (continued)ClauseCharacteristicRequirementInspection and test methodQ/A 1)Sample size5.4MechanicalpropertiesA test sample shall beselected from each diameterof bar/wire taken from eachcast, and shall be heat treatedtogether with a productionbatch of bolts.The sample selected shall besufficient to provide tensileand stress rupture test pieces.The test pieces shall meet themechanical propertiesrequired by the materialstandard.5.4.1TensilestrengthThe finished bolts shallwithstand the minimumtensile loads specified intable 7.Externally wrenched boltssh
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