1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16660 Grease, Polyalphaolefin Oil or Polyalphaolefin Oil Plus Mineral Oil and Lithium Soap Thickener Copyright 2012 General Motors Company All Rights Reserved July 2012 Originating Department: North American Engineering Standards Page 1 of 6
2、 1 Scope 1.1 Material Description. This standard defines grease composed of polyalphaolefin (PAO) oil or polyalphaolefin plus mineral oil and lithium soap thickener, having consistency of one, two or three (1, 2, or 3). 1.2 Symbols. Not applicable. 1.3 Typical Applications. Grease defined by this sp
3、ecification may be used on wheel bearings, chassis components (including ball joints, steering pivots, and universal joints), and general applications (including door cylinder locks, window regulators, sun roofs, and parking cables). 1.4 Remarks. Suitability with plastics and elastomers must be veri
4、fied. This grease is not suitable for use with elastomers made from buna, butyl, Ethylene Propylene Diene Monomer (M-class) (EPDM), or natural rubber. 2 References Note: Only the latest approved standards are applicable unless otherwise specified. 2.1 External Standards/Specifications. ASTM D217 AST
5、M D1743 ASTM D6184 DIN 51807 ASTM D566 ASTM D2265 DIN 51350 DIN 51817 ASTM D1264 ASTM D2596 DIN 51802 DIN ISO 2137 ASTM D1478 ASTM D4693 DIN 51805 DIN ISO 2176 ASTM D1742 ASTM D6138 2.2 GM Standards/Specifications. GMW3059 2.3 Additional References. TMC003 Material Safety Data Sheet guidance documen
6、ts (available at ). 3 Requirements 3.1 Performance Requirements. 3.1.1 Base Oil. Synthetic hydrocarbons comprised of olefin oligomers (polyalphaolefins) or a blend of polyalphaolefins and mineral oil shall be used as the base oil. 3.1.2 Thickener. Lithium-based soap shall be used as the thickener. T
7、he type of soap shall be characterized as being lithium, lithium 12-hydroxystearate, or lithium complex. 3.1.3 Specific Requirements. Polyalphaolefin based (synthetic) grease shall meet the requirements listed in Appendix A, Table A1 and Table A2. Polyalphaolefin (PAO) plus mineral oil-based (synthe
8、tic blend) grease shall meet the requirements listed in Appendix A, Table A1 and Table A3. 3.2 Performance Levels. 3.2.1 Designations. Polyalphaolefin based (synthetic) greases have performance level designations of CA and CB for chassis applications and WA and WB for wheel bearing applications. PAO
9、 plus mineral oil-based (synthetic blend) grease performance level designations for general applications are GA and GB. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORL
10、DWIDE ENGINEERING STANDARDS GMW16660 Copyright 2012 General Motors Company All Rights Reserved July 2012 Page 2 of 6 3.2.2 Nomenclature. Grease type, performance levels and consistency are defined using the following nomenclature: 2XY# where: 2 means PAO or PAO plus mineral oil oil-based and lithium
11、 soap thickener XY are letters designating performance levels shown in 3.2.1 # is a number from one to three (1 to 3) indicating National Lubricating Grease Institute (NLGI) consistency. (Example: 2CB2 is PAO oil with lithium thickener, CB performance level, NLGI consistency 2.) 4 Manufacturing Proc
12、ess Not applicable. 5 Rules and Regulations 5.1 Legal Regulations. All materials must satisfy applicable laws, rules, regulations and recommendations valid in the country of usage. 5.2 Language. In the event of conflict between the English and domestic language, the English language shall take prece
13、dence. 5.3 Inspection and Rejection. All shipments of material or parts under contract or purchase order manufactured to this specification shall be equivalent in every respect to the initial samples approved by Engineering. There shall be no changes in either formulation or manufacturing processes
14、permitted without prior notification and approval by Engineering. Lack of notification by the supplier constitutes grounds for rejection of any shipment. While samples may be taken from incoming shipments and checked for conformance to this specification, the supplier shall accept the responsibility
15、 for incoming shipments meeting this specification without dependence upon purchasers inspection. The series of tests used to approve each batch of product along with acceptance limits will be agreed upon by the purchaser and seller. The laboratory providing the certificate of analysis must also par
16、ticipate in a proficiency testing program (round robin) that is approved by the Fuels, Fluids, and Lubricants Global Subsystem Leadership Team (GSSLT) or designate. The Fuels, Fluids, and Lubricants GSSLT or designate must receive copies of the proficiency testing reports directly from the test prog
17、ram administrator. 5.4 Initial Source Approval. No shipment shall be made by any supplier until representative initial production samples have been approved by the Fuels, Fluids, and Lubricants Global Subsystem Leadership Team or designees meeting the requirements of this specification. 5.5 Material
18、 Safety Data Sheets/Safety Data Sheets (MSDS/SDS). For new product submissions, or when a change in chemical composition of an existing product has occurred, a complete copy of the Material Safety Data Sheet/Safety Data Sheet must be submitted in compliance with the Globally Harmonized System of Cla
19、ssification and Labeling of Chemicals (GHS) requirements or other country-specific MSDS/SDS requirements. In addition, product MSDS/SDS submissions must be in compliance with specific country General Motors TMC003 Material Safety Data Sheet/Safety Data Sheet guidance documents where available. 5.6 A
20、ll materials supplied to this standard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Engineering qualifications of an approved source are required for this standard. Only sources listed in the GM Materials File (MATSPC) under this st
21、andard number have been qualified by Engineering as meeting the requirements of this standard. For other GM locations, the responsible Engineering group should be contacted to obtain the approved source in that individual country. 7 Notes 7.1 Glossary. MATSPC: Global repository of GM Approved Materi
22、als for corresponding GM Engineering Standards. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16660 Copyright 2012 General Motors Compa
23、ny All Rights Reserved July 2012 Page 3 of 6 7.2 Acronyms, Abbreviations, and Symbols. CV Constant Velocity EPDM Ethylene Propylene Diene Monomer (M-class) GHS Globally Harmonized System of Classification and Labeling of Chemicals GSSLT Global Subsystem Leadership Team MATSPC Global Repository of GM
24、 Approved Materials for corresponding GM Engineering Standards. MSDS Material Safety Data Sheet NLGI National Lubricating Grease Institute PAO Polyalphaolefin SDS Safety Data Sheet 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW16660
25、 9 Release and Revisions This standard was originated in August 2011. It was first approved by the Fuels, Fluids, and Lubricants Global Subsystem Leadership Team (GSSLT) in October 2011. It was first published in October 2011. Issue Publication Date Description (Organization) 1 OCT 2011 Initial publ
26、ication. 2 JUL 2012 Added Regional Cross Reference Chart. (Fuels, Fluids, and Lubricants Global Subsystem Leadership Team) Cross Reference of Regional Specifications Specification Region GMW Category Specification Equivalent Comments 9273003 GMB/GME 2GB1 B 040 1175 9273164 GMB/GME 2CB2 B 040 1175 92
27、74350 GMB/GME 2WA2 B 040 0853 9274422 GMB/GME/SGM 2GA2 B 040 0858 9309851 GMB 2GB1 B 040 1138 94545068 GMK 2WA2 EDS-M-8131 94545073 GMK 2WA2 EDS-M-8141 94545079 GMK 2WA2 EDS-M-8150 94545080 GMK 2WA2 EDS-M-8151 94545697 GMK 2WA1 EDS-M-8161 None GMK 2WB2 EDS-M-8162 9985377 GMNA 2WA1 9986140 GMNA 2WA2
28、HN2474 GM Holden 2WA2 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16660 Copyright 2012 General Motors Company All Rights Reserved Jul
29、y 2012 Page 4 of 6 Appendix A A1 Consistency and Properties A1.1 Consistency for Performance Levels 2CA1, 2CB1, 2GA1, 2GB1, 2WA1, 2WB1, 2CA2, 2CB2, 2GA2, 2GB2, 2WA2, 2WB2, 2CA3, 2CB3, 2GA3, 2GB3, 2WA3, 2WB3. See Table A1. Table A1: Consistency for Performance Levels A1.2 Properties for Performance L
30、evels 2CA1, 2CB1, 2WA1, 2WB1, 2CA2, 2CB2, 2WA2, 2WB2, 2CA3, 2CB3, 2WA3, 2WB3. See Table A2. Table A2: Properties for Performance Levels Note 1, Note 2, Note 3, Note 4 Property Test Method Units 2CA1 2CA2 2CA3 2CB1 2CB2 2CB3 2WA1 2WA2 2WA3 2WB1 2WB2 2WB3 Dropping Point ASTM D566 ASTM D2265 DIN ISO 21
31、76 C 125 to 150 150 to 200 180 to 250 250 Corrosion Resistance ASTM D1743 or ASTM D6138 DIN 51802 Rating Rating Maximum Pass 1 Pass 2 Pass 1 Pass 1 Extreme Pressure, Weld Point ASTM D2596 DIN 51350 N (kgf), Minimum 1960 (200) 1960 (200) 1960 (200) 1960 (200) Extreme Pressure, Load Wear Index ASTM D2
32、596 DIN 51350 N (kgf), Minimum 295 (30) 295 (30) 295 (30) 295 (30) Low temperature performance ASTM D1478 or ASTM D4693 or DIN 51805 Maximum starting torque (Nm) at -40 C Maximum running torque (Nm) at -40 C Maximum Nm at -40 Maximum pressure, mbar 0.25 0.15 15.5 1400 at -35 C 0.25 0.15 15.5 2000 at
33、 -35 C 0.25 0.15 15.5 450 at -35 C 0.25 0.15 15.5 1400 at -35 C Property Test Method Units 2CA1, 2CB1, 2GA1, 2GB1, 2WA1, 2WB1 2CA2, 2CB2, 2GA2, 2GB2, 2WA2, 2WB2 2CA3, 2CB3, 2GA3, 2GB3, 2WA3, 2WB3 Consistency, Worked Penetration ASTM D217 DIN ISO 2137 mm/10 310 to 340 265 to 295 220 to 250 Copyright
34、General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16660 Copyright 2012 General Motors Company All Rights Reserved July 2012 Page 5 of 6 Oil Separatio
35、n ASTM D1742 DIN 51817 or ASTM D6184 % Maximum % Maximum, 30 h at 100 C 10 Not applicable 10 5 6 5 6 6 Water Resistance ASTM D1264 or DIN 51807, Part 1 % Maximum at 80 C Valuation after 3 h at 90 C Not applicable Not applicable 15 1 15 1 15 1 Note 1: Corrosion resistance shall be met using ASTM D174
36、3 or ASTM D6138/DIN 51802. When using ASTM D6138/DIN 51802, the standard test conditions shall be 1 week with distilled water except for categories 2CB1, 2CB2, and 2CB3 in which the test conditions shall be 3 weeks with synthetic sea water. Note 2: Low temperature performance shall be met using ASTM
37、 D1478, ASTM D4693, or DIN 51805. Note 3: Oil separation shall be met using ASTM D1742/DIN 51817 or ASTM 6184. Some regions require ASTM D6184. Note 4: Water resistance shall be met using ASTM D1264 or DIN 51807, Part 1. A1.3 Properties for Performance Levels 2GA1, 2GB1, 2GA2, 2GB2, 2GA3, 2GB3. See
38、Table A3. Table A3: Properties for Performance Levels Note 1, Note 2, Note 3, Note 4 Property Test Method Units 2GA1 2GA2 2GA3 2GB1 2GB2 2GB3 Dropping Point ASTM D566 ASTM D2265 DIN ISO 2176 C 180 to 250 250 Corrosion Resistance ASTM D1743 or ASTM D6138 DIN 51802 Rating Rating, Maximum Pass 1 Pass 1
39、 Extreme Pressure, Weld Point ASTM D2596 DIN 51350 N (kgf), Minimum 2000 1600 Low Temperature Performance ASTM D1478 or ASTM D4693 or DIN 51805 Maximum starting torque (N-m) at -40 C Maximum running torque (N-m) at -40 C Maximum N-m at -40 C Maximum pressure, mbar 0.25 0.15 15.5 1400 at -35 C 0.25 0
40、.15 15.5 1400 at -35 C Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16660 Copyright 2012 General Motors Company All Rights Reserved Ju
41、ly 2012 Page 6 of 6 Oil Separation ASTM D1742 DIN 51817 or ASTM D6184 % Maximum % Maximum, 30 h at 100 C 10 6 10 6 Water Resistance ASTM D1264 or DIN 51807, part 1 % Maximum at 80 C Valuation after 3 h at 90 C 15 1 10 1 Note 1: Corrosion resistance shall be met using ASTM D1743 or ASTM D6138/DIN 518
42、02. When using ASTM D6138/DIN 51802, the standard test conditions shall be 1 week with distilled water. Note 2: Low temperature performance shall be met using ASTM D1478, ASTM D4693, or DIN 51805. Note 3: Oil separation shall be met using ASTM D1742/DIN 51817 or ASTM D6184. Some regions require ASTM D6184. Note 4: Water resistance shall be met using ASTM D1264 or DIN 51807, part 1. Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
