1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/AS5780C AEROSPACE STANDARD AS5780 REV. C Issued 2000-09 Revised 2017-08 Superseding AS5780B Spe
5、cification for Aero and Aero-Derived Gas Turbine Engine Lubricants RATIONALE Committee E-34 has decided that Appendix A, table A1 needs to be split into two tables, Table A1 Design data, and Table A2 Methods under development. There is also a need to update some method designations following the pub
6、lication of some SAE methods and also update the Composition section. 1. SCOPE This specification defines basic physical, chemical, and performance limits for 5 cSt grades of gas turbine engine lubricating oils used in aero and aero-derived marine and industrial applications, along with standard tes
7、t methods and requirements for laboratories performing them. It also defines the quality control requirements to assure batch conformance and materials traceability, and the procedures to manage and communicate changes in oil formulation and brand. This specification invokes the Performance Review I
8、nstitute (PRI) product qualification process. Requests for submittal information may be made to the PRI at the address in Appendix D Section D.2, referencing this specification. Products qualified to this specification are listed on a Qualified Products List (QPL) managed by the PRI. Additional test
9、s and evaluations may be required by individual equipment builders before an oil is approved for use in their equipment. Approval and/or certification for use of a specific gas turbine oil in aero and aero-derived marine and industrial applications is the responsibility of the individual equipment b
10、uilders and/or governmental authorities and is not implied by compliance with or qualification to this specification. 2. REFERENCES 2.1 Applicable Documents The publications referred to in this specification are listed in Appendix D, Section D.1. Reference in this specification to any related docume
11、nt means the edition and all amendments current at the date of use of that document. In the event of a conflict between the text of this document and references cited herein, the text of this document shall take precedence. 2.2 Other Applicable References Other applicable references are listed in Ap
12、pendix D, Section D.2 for information purposes only. 2.3 Definitions STANDARD PERFORMANCE CAPABILITY CLASS (SPC): Lubricant intended for normal service. HIGH PERFORMANCE CAPABILITY CLASS (HPC): Lubricant intended for more demanding service in which engine operating conditions and/or service duration
13、s require higher thermal capability. SAE INTERNATIONAL AS5780C Page 2 of 19 BATCH: The volume of basestock, additive or finished lubricant receiving final certification analysis and testing. PERFORMANCE REVIEW INSTITUTE (PRI): An SAE affiliate with the objectives of providing global, unbiased, indep
14、endent manufacturing process and product assessments and certification services. QUALIFIED PRODUCTS GROUP (QPG): A mandated body designated by the PRI Qualified Product Management Council (QPMC) in accordance with PRI PD2000. This body is responsible for assessing whether a manufacturers products co
15、mply with the relevant standards. The Mandated Body is known as a Qualified Products Group (QPG) and is composed of members from the Original Equipment Manufacturers (OEMs) and Government Agencies. The QPMC has mandated a QPG for Aerospace Gas Turbine Oils. QUALIFIED PRODUCTS LIST (QPL): A list of p
16、roducts qualified by the QPG to this specification and issued by the PRI. QUALIFICATION REFERENCE NUMBER (QRN): A unique reference number assigned by the QPG to each formulation qualified to this specification. 3. COMPOSITION The composition of gas turbine oils used in aero and aero-derived marine a
17、nd industrial applications shall be based on polyol ester base-stock chemistry. Other base-stock chemistries may be considered for qualification at the discretion of the QPG. Additives containing barium or organic compounds of titanium, and known or suspected carcinogens, are prohibited. If a tricre
18、syl phosphate (TCP) additive is used, the TCP additive shall contain less than 0.20% by weight in total of mono, di and tri-ortho cresyl isomers of tricresyl phosphate. All chemical ingredients contained in aviation turbine lubricants must comply with all legal, environmental, toxicological and regu
19、latory requirements of the countries in which the products are manufactured and sold. A Safety Data Sheet (SDS) or other equivalent document shall be available to cover these regulatory requirements. 4. TEST REQUIREMENTS The test requirements in this section are mandatory requirements for the initia
20、l qualification of turbine engine oils to this specification. These requirements are primarily aimed at civil aero and aero-derived marine and industrial applications, but that does not preclude their use for military applications where considered desirable. All tests must be conducted by laboratori
21、es approved for the purpose in accordance with Section 5. The tests are grouped into the following property categories: Physical Properties Chemical Properties Stability Properties Deposition Properties Tribological Properties AIR6056, “Gas Turbine Engine Lubricant Specifications: Current Technical
22、Review and Future Direction” provides useful information to the background of these properties and tests and the reasons for their inclusion in AS5780. SAE INTERNATIONAL AS5780C Page 3 of 19 Table 1 - Physical properties Property Test Method Limits SPC and HPC Viscosity, mm2/s : 100 C ASTM D445/IP71
23、 4.9 to 5.4 40 C ASTM D445/IP71 23.0 min -40 C ASTM D445/IP71 or ASTM D2532 13000 max Viscosity Stability, 72 hours -40 C, % Change ASTM D2532 6 max Pour Point, C ASTM D97/IP15 or ASTM D5950 -54 max Flash Point, C ASTM D92/IP36 246 min Evaporation, 6.5 hours 204 C, wt % ASTM D972 10 max Foaming Tend
24、ency, Sequence I, II, III, mL ASTM D892/IP146 25/0 max (1) Shear Stability, % Viscosity change 40 C ASTM D2603 (2) 4 max NOTES: 1. Volume after aeration/Volume after 1 minute settling. 2. ASTM D2603 should be conducted with the following modifications: Calibrate the instrument to achieve 11.5% 0.5%
25、viscosity loss to a 30 mL sample of ASTM Reference Fluid A when irradiated for 5 minutes. Using the same power setting, irradiate a 30 mL sample of the turbine lubricant for 30 minutes. SAE INTERNATIONAL AS5780C Page 4 of 19 Table 2 - Chemical properties Property Test Method Limits SPC HPC TAN, mg K
26、OH/g ARP5088 1.0 max 1.0 max Sediment/Ash, mg/L FED-STD-791, Method 3010 Sed: 10 max Ash: 1 max (1) No undissolved water Sed: 10 max Ash: 1 max (1) No undissolved water Lubricant Compatibility: Sediment, mg/L Turbidity FED STAN 791, Method 3403 Mod (2) / Def Stan 05-50 (Part 61) Method 24 See Note (
27、3) 10 max None 10 max None Elastomer Compatibility, AMS3217/4, 72 hours at 204 C, % swell FED-STD-791, Method 3604 5 min 25 max 5 min 25 max Elastomer Compatibility (5), % weight change after 24/120 hours: Fluorocarbon 200 C LCS Fluorocarbon 200 C Nitrile 130 C Silicone 175 C Perfluoroelastomer (6)
28、200 C Def Stan 05-50 (Part 61) Method 22 10 / 15 max 10 / 20 max 19.5 / 22 max 16.5 / 16.0 max N/A 11 / 15 max 12 / 20 max 19 / 19.5 max 14.5 / 14.5 max 2 / 2 max Trace Metals, mg/L See Note (4) Al, 2 max Al, 2 max Fe, 2 max Fe, 2 max Cr, 2 max Cr, 2 max Ag, 1 max Ag, 1 max Cu, 1 max Cu, 1 max Sn, 4
29、 max Sn, 4 max Mg, 2 max Mg, 2 max Ni, 2 max Ni, 2 max Ti, 2 max Ti, 2 max Si, 10 max Si, 10 max Pb, 2 max Pb, 2 max Mo, 3 max Mo, 3 max Zn, 2 max Zn, 2 max NOTES: 1. If the total sediment does not exceed 1 mg/L, the ash content requirement shall be waived. 2. FED STAN 791, Method 3403 shall be modi
30、fied in accordance with Appendix C. 3. The E34 Qualified Products Group (QPG) should be contacted for the current list of required reference oil brands 4. A spectrometric technique able to determine the listed metals at the limits stated in Table 2 shall be used. Methods ASTM D5185 and ASTM D6595 ha
31、ve been found to be suitable. Appropriate spectrometric calibration standards, covering the concentration ranges of interest shall be utilized. 5. Embrittlement shall be determined as a Report only item in Appendix A. 6. The perfluoroelastomer used shall comply with the requirements of AMS7257. SAE
32、INTERNATIONAL AS5780C Page 5 of 19 Table 3 - Stability properties Property Test Method Limits SPC HPC Oxidation to provide performance data which is considered of significance by some engine OEMs; and to enable data on these tests to be accumulated so that appropriate specification limits can be pro
33、posed in the future. If a report item forms part of a larger test matrix where limits are applied to the other parameters, the non-limited reporting items have been left in the main body of the specification. A.2 The tests are split between two tables. Table A1 lists the tests that are almost univer
34、sally required by engine OEMs for engine design data. Table A2 lists tests that are either under development or where the data is not sufficiently well understood to be promoted to the main body of this specification. A.3 Where considered appropriate, guidance limits have been provided in the third
35、column of Tables A1 and A2. The guidance is based on current knowledge and is intended to assist the oil formulator in meeting OEM engine approval criteria that may be required once the lubricant has achieved AS5780 qualification. The guidance limits shall not be used as criteria for assessing the s
36、uitability of the lubricant for AS5780 qualification while the test remains in this appendix. Table A1 - Design data Property Test Method Guidance SPC HPC Acid Assay, Mole % FED-STD-791, Method 3500 (1) Report Report Viscosity, mm2/s 200 C ASTM D341 Report Report Viscosity Index ASTM D2270 (2) Repor
37、t Report Pressure - Viscosity Coefficient ARP6157 (3) Report Report Density, kg/m3 ASTM D4052 (4) Report Report Heat Capacity joules/kg C ASTM E1269 (5) Report Report Thermal Conductivity by DSC ASTM D2717 (6) Report Report Electrical Conductivity ASTM D2624 (7) Report Report Hydrolytic Stability 90
38、 C Def Stan 05-50 (Part 61), Method 6 Report Report Table A2 - Methods under development Property Test Method Guidance SPC HPC Elastomer Compatibility, Fluorocarbon, 1800 hours at: 100 C, % swell 120 C, %swell 140 C 160 C Snecma Method 20 max 20 max No shrinkage (8) No shrinkage (8) 20 max 20 max No
39、 shrinkage (8) No shrinkage (8) Vapor Phase Coking 371 C, Tube Deposit, mg ARP5921 Report Report High Temperature Deposition, Tube Deposit rating, 15 hours, Oil in temp 163 C Tube deposit, wt Tube deposit rating Viscosity increase, % TAN increase, mg KOH/g Filter deposits, g HTDT Report Report Repor
40、t Report Report Report Report Report Report Report ALTE, Mild wear, WSD 20 kg ball load, mm ARP6255 Report Report SAE INTERNATIONAL AS5780C Page 12 of 19 Table A2 - Methods under development (continued) ALTE, Severe Wear, Ball Load 1.5 mm WSD, kg ARP6255 Report Report Thermal Aging, at 150 C and 180
41、 C (9) Anti-oxidant content, %: 150 C 180 C Report Report 50 min 15 min Density change, % 150 C 180 C Report Report 0.5 max 1.0 max Viscosity 40 C change, % 150 C 180 C 10 max 25 max 5 max 15 max Viscosity 100 C, change, % 150 C 180 C 8 max 15 max 4 max 10 max Acidity change, mg KOH/g 150 C 180 C 8
42、max 15 max 2 max 5 max Flash point change, C 150 C 180 C 70 max 85 max 25 max 50 max Thermal Aging, 72 hours at 225 C Acidity change, mg KOH/g N/A 20 max Flash point change, C N/A 100 max Particulate generation, mg, 862 kPa (125 psig) 329.5 C (625 F) 18 hours ARP6223 120 max 120 max WAM Load Carryin
43、g Capability, Load Stage ARP6156 Report Report Elastomer Compatibility, Embrittlement, days to failure Fluorocarbon 200 C LCS Fluorocarbon 200 C Nitrile 130 C Silicone 175 C Perfluoroelastomer 200 C Def Stan 05-50 (Part 61) Method 22 Report Report Report Report Report Report Report Report Report Rep
44、ort NOTES: 1. Alternate methods may be applicable but FED-STD-791, Method 3500, shall be used as the reference method. 2. ASTM D2270 may be used to determine the slope within the normal temperature range to 175 C. 3. Pressure viscosity shall be determined at 40 C, 70 C, 100 C, 130 C, and 150 C. 4. D
45、ensity shall be determined at 15 C, 40 C, and 70 C. 5. Heat Capacity shall be determined at 15 C, 40 C, 100 C, 150 C, and 200 C. 6. Thermal conductivity shall be determined at 40 C, 100 C, 150 C, and 200 C. SAE INTERNATIONAL AS5780C Page 13 of 19 7. Electrical conductivity shall be determined at 20
46、C and 80 C. 8. Determinations of % swell are conducted periodically throughout the test. The term, “no shrinkage”, shall be taken as meaning no reduction in the % swell of the test pieces as the test progresses. 9. Tests are terminated at 504 hours for SPC oils and 672 hours for HPC oils and each of
47、 the degradation parameters determined. Each of the degradation parameters shall also be determined and reported after test durations of 168 and 336 hours for a 504 hour test, and 168, 336, and 504 hours for a 672 hour test by sub-sampling during the test from the reaction vessel in accordance with
48、the method. SAE INTERNATIONAL AS5780C Page 14 of 19 APPENDIX B - CORROSIVENESS AND OXIDATION STABILITY B.1 The corrosion and oxidation stability test shall be performed in accordance with either: FED-STD-791, Method 5308, “Corrosiveness and Oxidation Stability of Light Oils (Metal Squares),” Or ASTM D4636, “Corrosiveness and Oxidation Stability of Hydraulic Oils, Aircraft Turbine Engine Lubricants, and Other Highly Refined Oils, Alternative Procedure 2.“ Whichever of the above procedures is used it shall be modified as follows: B.1.1 Three separate tests, each conducted for 72 ho
