SIST EN 3021:2017

Aerospace series - Molybdenum disulphide dry film lubricants graphite and halogen free - Technical specification

This standard specifies the qualification and test requirements for graphite and halogen free molybdenum disulphide dry film lubricant.
Test requirements and testing of fretting, corrosion, wear and friction properties of relevant lubricants are not part of this standard. Refer to relevant standards in normative references.
All testing defined in this standard has to be certified by the manufacturer of the lubricant.
In order to achieve uniform coatings with defined thickness and best adhesion properties, spray application in combination with heat curing is recommended.

Luft- und Raumfahrt - Trockenschmierstofffilme aus Molybdänsulfid-Basis, graphitfrei und halogenfrei - Technische Lieferbedingungen

Série aérospatiale - Lubrifiants á base de bisulfure de molybdène, sans graphite et sans halogène - Spécification technique

Aeronavtika - Suha maziva iz molibdenovega disulfida brez grafita in halogena - Tehnična specifikacija

Ta standard določa zahteve glede ustreznosti in preskušanja suhega maziva iz molibdenovega disulfida brez grafita in halogena.
Preskusni pogoji in preskušanje lastnosti fretiranja, korozije, obrabe in trenja ustreznih maziv niso del tega standarda. Upoštevajte ustrezne standarde v normativnih referencah.
Vse preskuse, opredeljene v tem standardu, mora potrditi proizvajalec maziva.
Za dosego enakomernih premazov z določeno debelino in najboljšimi adhezijskimi lastnostmi priporočamo nanašanje pršila v kombinaciji s toplotno obdelavo.

General Information

• Status: Published
• Publication Date: 07-Aug-2017
• ICS: 75.100 - Lubricants, industrial oils and related products
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 07-Aug-2017
• Due Date: 12-Oct-2017
• Completion Date: 08-Aug-2017
• Ref Project: EN 3021:2017 - Aerospace series - Molybdenum disulphide dry film lubricants graphite and halogen free - Technical specification

Overview

EN 3021:2017 - “Aerospace series - Molybdenum disulphide dry film lubricants graphite and halogen free - Technical specification” (CEN) defines qualification, batch acceptance and delivery requirements for graphite‑ and halogen‑free molybdenum disulphide (MoS2) dry film lubricants used in aerospace applications. The standard covers composition limits, curing and storage, batch release/qualification testing and minimum coating quality. It does not include fretting, corrosion, wear or friction test procedures - users must consult the normative references for those test methods. All tests specified in EN 3021:2017 must be certified by the lubricant manufacturer.

Key topics and requirements

• Scope: Qualification and batch acceptance testing of graphite‑ and halogen‑free MoS2 dry film lubricants for fasteners and sliding/wear parts.
• Composition rules: Prohibits graphite, halogenated substances, metal powders and other constituents that may harm substrates, environment or health.
• Types:
  • Type A - room temperature curing; suitable for aluminium alloys and fibre‑reinforced plastics.
  • Type B - heat curing; suitable for titanium, steels and nickel refractory alloys.
• Curing & application:
  • Manufacturer’s curing recommendations apply; spray application combined with heat curing is recommended for uniform coatings, defined thickness and best adhesion.
• Film thickness:
  • Qualification test film thickness: typically 7.0 µm ± 2 µm after mechanical finishing.
  • Typical acceptable dry film thickness range: 5 µm to 15 µm (per Table 1).
• Quality assurance:
  • Qualification requires tests on a minimum of three production batches.
  • Batch Acceptance Testing (BAT): tests marked “BAT” in the standard must be performed for serial production; results reported on an inspection certificate per EN 10204.
• Substrate pretreatment: abrasive blasting or anodising as specified (e.g., EN 2497, EN ISO 8504‑2, ISO 8080).

Practical applications and users

• Applications: lubricating fasteners, bearings and sliding/wear components in airframes, landing gear, engines and assemblies where solid film lubrication is required without graphite or halogens.
• Who uses EN 3021:2017:
  • Lubricant manufacturers (product formulation, certification and BAT)
  • Aerospace OEMs and tier suppliers (specifying coatings on drawings and procurement)
  • MRO and coating shops (application method, curing and acceptance criteria)
  • Quality, testing and regulatory teams (batch certification and compliance)

Related standards (normative references)

Relevant referenced standards include EN 2491, EN 2497, EN 3026, EN 3027, EN 3030 and EN 3840, plus a range of EN ISO paint/coating test methods (e.g., EN ISO 2808, EN ISO 2409, EN ISO 9117). Refer to EN 3021:2017 for the complete normative list.

Keywords: EN 3021:2017, molybdenum disulphide dry film lubricant, graphite and halogen free, aerospace coatings, qualification testing, batch acceptance testing, heat curing, spray application.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Trockenschmierstofffilme aus Molybdänsulfid-Basis, graphitfrei und halogenfrei - Technische LieferbedingungenSérie aérospatiale - Lubrifiants á base de bisulfure de molybdène, sans graphite et sans halogène - Spécification techniqueAerospace series - Molybdenum disulphide dry film lubricants graphite and halogen free - Technical specification75.100MazivaLubricants, industrial oils and related productsICS:Ta slovenski standard je istoveten z:EN 3021:2017SIST EN 3021:2017en,fr,de01-oktober-2017SIST EN 3021:2017SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3021
July
t r s y ICS
y wä s r r English Version
Aerospace series æ Molybdenum disulphide dry film lubricants graphite and halogen free æ Technical specification Série aérospatiale æ Lubrifiants á base de bisulfure de molybdèneá sans graphite et sans halogène æ Spécification technique
Luftæ und Raumfahrt æ Trockenschmierstofffilme aus MolybdänsulfidæBasisá graphitfrei und halogenfrei æ Technische Lieferbedingungen This European Standard was approved by CEN on
s y April
t r s yä
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:
Avenue Marnix 17,
B-1000 Brussels
t r s y CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
u r t sã t r s y ESIST EN 3021:2017

The requirements of this specification concern graphite and halogen free molybdenum disulphide dry film lubricants for fastener and other parts subjected to sliding and wear. Graphite and halogenated substances may have corrosive effects on the substrate.
All testing defined in this standard has to be certified by the manufacturer of the lubricant. In order to achieve uniform coatings with defined thickness and best adhesion properties, spray application in combination with heat curing is recommended. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2491, Aerospace series — Molybdenum disulphide dry lubricants — Coating methods EN 2497, Aerospace series — Dry abrasive blasting of titanium and titanium alloys
EN 3026, Aerospace series — Test method for dry film lubricants — Corrosion test on steel specimens EN 3027, Aerospace series — Test method for dry film lubricants — Salt spray test EN 3030, Aerospace series — Test method for dry film lubricants — Solids content EN 3840, Aerospace series — Paints and varnishes — Technical specification EN 3847, Aerospace series — Paints and varnishes — Determination of sedimentation rating1) EN 4160, Aerospace series — Paints and varnishes — Determination of the effect of thermal exposure EN 10204, Metallic products —Types of inspection documents EN ISO 1513, Paints and varnishes — Examination and preparation of test samples (ISO 1513:2010) EN ISO 1519, Paints and varnishes — Bend test (cylindrical mandrel) (ISO 1519:2011) EN ISO 1523, Determination of flash point — Closed cup equilibrium method (ISO 1523:2002) EN ISO 1524, Paints, varnishes and printing inks — Determination of fineness of grind (ISO 1524:2013) EN ISO 2409, Paints and varnishes — Cross-cut test (ISO 2409:2013) EN ISO 2431, Paints and varnishes — Determination of flow time by use of flow cups (ISO 2431:2011) EN ISO 2808, Paints and varnishes — Determination of film thickness (ISO 2808:2007)
1) Published as ASD-STAN Prestandard at the date of publication of this standard. http://www.asd-stan.org/ SIST EN 3021:2017

EN ISO 9117-1, Paints and varnishes — Drying tests — Part 1: Determination of through-dry state and through-dry time (ISO 9117-1:2009) EN ISO 9117-6, Paints and varnishes — Drying tests — Part 6: Print-free test (ISO 9117-6:2012) EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227:2012) ISO 3270, Paints and varnishes and their raw materials — Temperatures and humidities for conditioning and testing ISO 8080, Aerospace — Anodic treatment of titanium and titanium alloys — Sulfuric acid process ISO 11075, Aircraft — De-icing/anti-icing fluids — ISO type I ISO 11078, Aircraft — De-icing/anti-icing fluids — ISO types II, III and IV SIST EN 3021:2017
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