1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16949 Grease, Polyalkylene Glycol Oil and Lithium Soap Thickener Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 1 of 5 1 Scope 1.1 Material Description. This specification defines grease formulated with polyalkylene
2、glycol (PAG) oil and lithium soap thickener and having consistency from 0 to 2. 1.2 Symbols. Not applicable. 1.3 Typical Applications. Due to its compatibility with Ethylene Propylene Diene Monomer (EPDM) elastomers; compatibility with brake fluids DOT 3, 4 and 5.1; efficient wear protection; good a
3、dhesion; and water resistance, this grease can be used in vehicle brake and clutch systems. 1.4 Remarks. Many formulations of the same type of elastomer and plastic can be found. Therefore, compatibility of the specific elastomer or plastic with grease must be verified. ASTM D4289, Standard Test Met
4、hod for Elastomer Compatibility of Lubricating Greases and Fluids, can be used to evaluate compatibility of grease with elastomers. The limit for volume change and Durometer A hardness should meet the materials and subsystems requirements. The compatibility requirements of other non-metallic materia
5、ls should be established in consultation with material engineers. This specification does not include extreme pressure performance requirements. A wear test should be conducted before using this grease on aluminum or aluminum alloys under dynamically high load conditions. Aluminum typically has a na
6、tural or artificially increased (anodized) aluminum-oxide surface layer that is resistant to PAG. High loads can remove this layer allowing PAG to attack the exposed aluminum metal and cause fretting corrosion. 2 References Note: Only the latest approved standards are applicable unless otherwise spe
7、cified. 2.1 External Standards/Specifications. ASTM B117 ASTM D1748 ASTM D6184 DIN 51817 ASTM D217 ASTM D2265 DIN 51802 DIN ISO 2137 ASTM D566 ASTM D4289 DIN 51805 DIN ISO 2176 ASTM D1264 ASTM D6138 DIN 51807 2.2 GM Standards/Specifications. GMW3059 2.3 Additional References. TMC003 Material Safety
8、Data Sheet guidance documents (available at ). 3 Requirements 3.1 Performance Requirements. 3.1.1 Base Oil. Polyalkylene glycol oil shall be used as the base oil. 3.1.2 Thickener. Lithium-based soap shall be used as the thickener. The type of soap shall be characterized as being lithium, lithium 12-
9、hydroxystearate, or lithium complex. 3.1.3 Specific Requirements. The grease shall meet the requirements listed in Appendix A, Tables A1, A2, and A3. 3.2 Performance Levels. 3.2.1 Designations. Performance level designations for the grease are AA and BB. 3.2.2 Nomenclature. Grease type, performance
10、levels and consistency are defined using the following nomenclature: 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 GMW16949 Copyright 2013
11、 General Motors Company All Rights Reserved May 2013 Page 2 of 5 5XY# Where: 5 is PAG oil-based with lithium soap thickener. XY are letters designating performance levels shown in 3.2.1. # is a number indicating National Lubricating Grease Institute (NLGI) consistency. “1/2” indicates an intermediat
12、e consistency. (Example: 5AA0 is polyalkylene glycol oil with lithium thickener, AA performance level, National Lubricating Grease Institute (NLGI) consistency 0, while 5AA1/2 is the same type of grease but with NLGI consistency between 1 and 2.) 4 Manufacturing Process Not applicable. 5 Rules and R
13、egulations 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 precedence. 5.3 Inspection and Rejecti
14、on. 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 permitted without prior notificat
15、ion 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 for incoming shipments meeting t
16、his 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 participate in a proficiency testing
17、 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 program administrator. 5.4 Initial So
18、urce 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 Safety Data Sheets/Safety Data S
19、heets (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 Classification and Labeling of Chemi
20、cals (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 All materials supplied to this sta
21、ndard must comply with the requirements of GMW3059, Restricted and Reportable Substances for Parts. 6 Approved Sources Materials supplied to this specification must be approved by General Motors. The appropriate GM Materials Engineering department(s) must confirm material as meeting the requirements
22、 of this specification. Any test data sheets of material submitted to General Motors for such confirmation (e.g., during Production Part Approval Process (PPAP) under this material specification must list all properties and must apply corresponding test methods of this material specification. 7 Note
23、s 7.1 Glossary. Not applicable. 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 GMW16949 Copyright 2013 General Motors Company All Rights Re
24、served May 2013 Page 3 of 5 7.2 Acronyms, Abbreviations, and Symbols. # Number EPDM Ethylene Propylene Diene Monomer GHS Globally Harmonized System of Classification and Labeling of Chemicals GSSLT Global Subsystem Leadership Team MSDS Material Safety Data Sheet NLGI National Lubricating Grease Inst
25、itute PAG Polyalkylene glycol PPAP Production Part Approval Process SDS Safety Data Sheet 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW16949 9 Release and Revisions This standard was originated in April 2013. It was first approved
26、by the Fuels, Fluids, and Lubricants Global Subsystem Leadership Team in May 2013. It was first published in May 2013. Issue Publication Date Description (Organization) 1 MAY 2013 Initial publication. Cross Reference of Regional Specifications Part Number Region GMW Category Equivalent Specification
27、 9036079 SGM 5AA1/2 B 040 1175 9273087 GMB 5AA1/2 B 040 1175 9274057 GMB 5AA0/1 B 040 0716 9309814 GMB 5AA0/1 B 040 0716 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WOR
28、LDWIDE ENGINEERING STANDARDS GMW16949 Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 4 of 5 Appendix A A1 Consistency and Properties A1.1 Consistency for Performance Levels 5AA0/1, 5AA1, 5AA1/2, 5AA2, 5BB1, 5BB2. Table A1: Consistency for Performance Levels Consistency Test
29、Method Units 5AA0/1 5AA1 5BB1 5AA1/2 5AA2 5BB2 Worked Penetration ASTM D217 DIN ISO 2137 mm/10 345 to 375 310 to 340 280 to 315 265 to 295 A1.2 Properties for Performance Levels 5AA0/1, 5AA1, 5AA1/2, 5AA2. Table A2: Properties for Performance Levels Property Test Method Units 5AA0/1 5AA1 5AA1/2 5AA2
30、 Dropping Point ASTM D566 ASTM D2265 DIN ISO 2176 C 185 minimum 220 minimum 220 minimum 220 minimum Corrosion Resistance ASTM B117 or ASTM D6138 DIN 51802 Rating Rating maximum No rust 1 No rust 1 No rust 1 No rust 1 Low Temperature Performance DIN 51805 Maximum pressure, mbar 1400 at -50 C 1400 at
31、-40 C 1400 at -40 C 1400 at -40 C Oil Separation ASTM D6184 or DIN 51817 % maximum 10 10 6 6 Water Resistance ASTM D1264 or DIN 51807 Part 1 % maximum at 80 C Maximum valuation after 3 h at 90 C 15 1 15 1 15 1 15 1 Copyright General Motors Company Provided by IHS under license with General Motors Co
32、mpanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16949 Copyright 2013 General Motors Company All Rights Reserved May 2013 Page 5 of 5 A1.3 Properties for Performance Levels 5BB1 and 5BB2. Table A3: Properties for Performanc
33、e Levels Property Test Method Units 5BB1 5BB2 Dropping Point ASTM D566 ASTM D2265 DIN ISO 2176 C 220 minimum 220 minimum Corrosion Resistance ASTM B117 or ASTM D6138 DIN 51802 Rating Rating maximum No rust 1 No rust 1 Low Temperature Performance ASTM D1748 Maximum starting torque (Nm) at -20 C 0.2 0
34、.2 Oil Separation ASTM D6184 DIN 51817 % maximum 6 6 Water Resistance ASTM D1264 or DIN 51807 Part 1 % maximum at 80 C Maximum valuation after 3 h at 90 C 15 1 15 1 Copyright General Motors Company Provided by IHS under license with General Motors CompanyNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
