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FOR SPACE STANDARDIZATIONEUROPEAN COOPERATION

ECSS

Space product

assurance

Data for selection of space materials

and processes

ECSS Secretariat

ESA-ESTEC

Requirements & Standards Division

Noordwijk, The Netherlands

ECSS-Q-70-71A rev. 1

18 June 2004

ECSS

18 June 2004ECSS--Q--70--71A rev. 1

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Published by: ESA Publications Division

ESTEC, P.O. Box 299,

2200 AG Noordwijk,

The Netherlands

ISSN: 1028-396X

Price:Ą30

Printed in: The Netherlands

Copyright:E2004 by the European Space

Agencyfor the members ofECSS

ECSS

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Foreword

This Standard is one of the series of ECSS Standards intended to be applied together for the management, engineering and product assurance in space projects and applications. ECSS is a cooperative effort of the European Space Agency, national space agencies and European industry associations for the purpose of developing and maintaining common standards. rather than in terms of how to organize and perform the necessary work. This allows existing organizational structures and methods to be applied where they are effective, and for the structures and methods to evolve as necessary without rewriting the standards. The formulation of this Standard takes into account the existing ISO 9000 family of documents. This Standard has been prepared by editing ESA PSS--01--701, reviewed by the ECSS Product Assurance Panel and approved by the ECSS Steering Board. This revision 1 cancels and replaces ECSS--Q--70--71A, dated 27 February 2004. The revision was made to correct subclause 6.17.6 c. and to implement editorial changes. ECSS

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Contents

2 Normative references 13.....................................................

3 Terms, definitions and abbreviated terms 15..................................

3.1 Terms and definitions 15...............................................

3.2 Abbreviated terms 17.................................................

4 Suppliers responsibilities 19...................................................

4.1 Selection of materials 19..............................................

4.2 Specifications or standards 19.........................................

4.3 Selection of non-listed or non-proven materials 20........................

4.4 Procurement 20......................................................

5 Materials in space applications 21...........................................

5.1 General 21..........................................................

5.2 Mission constraints 21.................................................

5.3 Information on materials 27............................................

5.4 Classes of materials 29................................................

6 Processes39................................................................

6.1 General 39..........................................................

6.2 Group 1: Adhesive bonding 40.........................................

6.3 Group 2: Composite manufacture 40...................................

6.4 Group 3: Encapsulation and moulding 40...............................

6.5 Group 4: Painting and coating 40......................................

6.6 Group 5: Cleaning 41.................................................

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6.7 Group 6: Welding and brazing 41......................................

6.8 Group 7: Crimping and wire-wrapping 43...............................

6.9 Group 8: Soldering 43.................................................

6.10 Group 9: Surface treatments 43........................................

6.11 Group 10: Plating 44..................................................

6.12 Group 11: Machining 44..............................................

6.13 Group 12: Metal forming 45...........................................

6.14 Group 13: Heat treatment 46..........................................

6.15 Group 14: Special fabrication 47.......................................

6.16 Group 15: Marking 47.................................................

6.17 Group 16: Miscellaneous processes 47..................................

6.18 Group 17: Inspection procedures 48....................................

Annex A (informative) Classes of materials 49...................................... A.1 Aluminium and Al- alloys 49........................................... A.2 Copper and Cu-alloys 52............................................. A.3 Nickel and Ni-alloys 55................................................ A.4 Titanium and Ti-alloys 60............................................... A.5 Steels 62............................................................ A.6 Stainless steels 65..................................................... A.7 Filler materials: welding, brazing and soldering 68........................ A.8 Miscellaneous metallic materials 71.................................... A.9 Optical materials 74.................................................. A.10 Adhesives, coatings and varnishes 75................................... A.11 Adhesive tapes 80.................................................... A.12 Paints and inks 81..................................................... A.13 Lubricants 84........................................................ A.14 Potting compounds, sealants and foams 86............................. A.15 Reinforced plastics 88................................................. A.16 Rubbers and elastomers 94............................................ A.17 Thermoplastics 96.................................................... A.18 Thermoset plastics 99................................................. A.19 Wires and cables 101.................................................. A.20 Miscellaneous non-metallic materials 101................................ Annex B (informative) Material data sheets - Introduction 105........................ B.1 Identification of data sheets 105......................................... B.2 Material description 106................................................ B.3 Product 106.......................................................... B.4 Experience and availability 106......................................... B.5 General properties 106................................................. B.6 Properties relevant to space use 106..................................... B.7 Special recommendations 107.......................................... Annex C (informative) Material data sheets 109...................................... C.1 Aluminium and Al-alloys 110............................................ C.2 Copper and Cu-alloys 117............................................. C.3 Nickel and Ni-alloys 121................................................ C.4 Titanium and Ti-alloys 122............................................... C.5 Steels 125............................................................ C.6 Stainless steels 126..................................................... C.7 Filler materials: welding, brazing and soldering 129........................ C.8 Miscellaneous metallic materials 133.................................... C.9 Optical materials 135.................................................. C.10 Adhesives, coatings and varnishes 135................................... C.11 Adhesive tapes and films 149........................................... ECSS

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Tables

Table 1: Compatible couples for bimetallic contacts 26............................... Table A-1: Aluminium alloys with high resistance to stress corrosion cracking 52........... Table A-2: Copper alloys with high resistance to stress corrosion cracking 55............. Table A-3: Nickel alloys with a high resistance to stress corrosion cracking 60............. Table A-4: Titanium alloys with high resistance to stress corrosion cracking 62............. Table A-5: Steel alloys with high resistance to stress corrosion cracking 65................ Table A-6: Stainless steels with high resistance to stress corrosion cracking 68............. Table A-7: Guide to choice of solder-types for space use 69........................... Table A-8: Approved solder compositions for space use 70............................ Table A-9: Miscellaneous alloys with high resistance to stress corrosion cracking 74........ Table B-1: Material classes 105...................................................... ECSS

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Introduction

preliminary selection and application of materials and processes by orientating designers and members of project groups towards well-known products that are currently available and that have been used successfully in past spacecraft programmes. ECSS

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11 1 Scope General requirements for materials andtheir associated processes are provided in this Standard along with the environmental requirements for materials application in space. Annex A (informative) contains guidelines for each class of material used in the declared materials list (DML) in ECSS--Q--70 and factors to be considered for process selection. Annex B (informative) contains data sheets for materials that can be considered for use in space applications i.e. materials that were used successfully for some applications in space systems and associated equipment. Data sheets contain: property data -- either from manufacturers or determined by test, and comments on material application in space conditions. The data sheets are grouped by their DML material class, using the class number, e.g. Class 1: Aluminium and Al-- alloys; and Class 10: Adhesives, coatings and varnishes. ECSS

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Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of this ECSS Standard. For dated references, subsequent amendments to, or revisions of any of these publications do not apply. However, parties to agreements based on this ECSS Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references the latest edition of the publication referred to applies.

ECSS--P--001 Glossary of terms

ECSS--Q--00 Space product assurance - Policy and principles ECSS--Q--20 Space product assurance - Quality assurance

ECSS--Q--40 Space product assurance - Safety

ECSS--Q--70 Space product assurance - Materials, mechanical parts and processes ECSS--Q--70--01 Spaceproductassurance - Contaminationandcleanliness control ECSS--Q--70--02 Space product assurance - Thermal vacuum outgassing test for the screening of space materials

ECSS -- Q -- 70 -- 03

1) Space product assurance - Black anodizing of aluminium using inorganic dyes ECSS--Q--70--04 Space product assurance - Thermal cycling test for the screening of space materials and processes

ECSS -- Q -- 70 -- 05

1) Space product assurance - Detection of organic conta- mination of surfaces by IR spectroscopy

ECSS -- Q -- 70 -- 06

1) Spaceproductassurance - ParticleandUVradiationtest- ing of space materials ECSS--Q--70--07 Space product assurance - Verification and approval of automatic machine wave soldering ECSS--Q--70--08 Space product assurance - The manual soldering of high- reliability electrical connections ECSS--Q--70--09 Space product assurance - Measurement of thermo- optical properties of thermal control materials ECSS--Q--70--10 Space product assurance - Qualification of printed circuit boards 1)

To be published.

ECSS

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14 ECSS--Q--70--11 Space product assurance - Procurement of printed circuit boards ECSS--Q--70--13 Space product assurance - Measurement of the peel and pull-off strength of coatings and finishes using pressure- sensitive tapes ECSS--Q--70--18 Space product assurance - Preparation, assembly and mounting of RF coaxial cables ECSS--Q--70--20 Space product assurance - Determination of the suscepti- bility of silver-plated copper wire and cable to "red-plague" corrosion ECSS--Q--70--21 Space product assurance - Flammability testing for the screening of space materials ECSS--Q--70--22 Spaceproductassurance - Thecontroloflimitedshelf-life materials ECSS--Q--70--25 Space product assurance - The application of the black coating Aeroglaze Z306 ECSS--Q--70--26 Space product assurance - Crimping of high-reliability electrical connections ECSS--Q--70--28 Space product assurance - The repair and modification of printed circuit board assemblies for space use ECSS--Q--70--29 Space product assurance - The determination of offgas- sing products from materials and assembled articles to be used in a manned space vehicle crew compartment ECSS--Q--70--30 Spaceproductassurance - Wire-wrappingofhigh-reliabil- ity electrical connections ECSS--Q--70--33 Space product assurance - The application of the thermal control paint PYROLAC PSG 120FD ECSS--Q--70--34 Space product assurance - The application of the black electrically conductive coating Aeroglaze H322 ECSS--Q--70--35 Space product assurance - The application of the blackquotesdbs_dbs25.pdfusesText_31

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