1、 WORLDWIDE ENGINEERING STANDARDS Material Specification GMW16737 Grease, Silicone Copyright 2012 General Motors Company All Rights Reserved August 2012 Originating Department: North American Engineering Standards Page 1 of 5 1 Scope 1.1 Material Description. This specification defines grease compose
2、d of silicone oil and inorganic thickening agents (amorphous silica, lithium soap, or polytetrafluoroethylene). 1.2 Symbols. Not applicable. 1.3 Typical Applications. Grease defined by this specification may be used on cable connectors, battery terminals, dashboard gauges, rubber door seals, window
3、regulator assemblies, brake calipers, ball joints, cables (trunk/tailgate, accelerator, hood, parking brake), gearshift controls, fuel filler lock doors, air conditioning (A/C) systems, headrests, and as plastic and elastomers assembly aids. 1.4 Remarks. Silicone grease is suitable for use with most
4、 plastics and elastomers. However, this grease should not be used with components made of silicone rubber. This grease will also slightly swell butyl rubber. Consult a materials compatibility chart for specific information. 2 References Note: Only the latest approved standards are applicable unless
5、otherwise specified. 2.1 External Standards/Specifications. ASTM D217 ASTM D1478 ASTM D6184 DIN 51807 ASTM D566 ASTM D1743 DIN 51802 DIN ISO 2137 ASTM D1264 ASTM D2265 DIN 51805 DIN ISO 2176 2.2 GM Standards/Specifications. 9986373 GMW3059 2.3 Additional References. TMC003 Material Safety Data Sheet
6、 guidance documents (available at ). 3 Requirements 3.1 Performance Requirements. 3.1.1 Base Oil. Silicone oil (dimethyl or phenyldimethyl polysiloxane) shall be used as the base oil. 3.1.2 Thickener. Amorphous silica, lithium soap, lithium complex, or polytetrafluoroethylene (PTFE) particles shall
7、be used as the thickener. 3.1.2.1 Thickener Designations. The designation for silicone grease containing amorphous silica thickener is ST. The designation for silicone grease containing lithium-based soap thickener (lithium 12-hydroxystearate, or lithium complex) is LT. The designation for silicone
8、grease containing PTFE thickener is PT. 3.1.3 Specific Requirements. The grease shall meet the requirements listed in Appendix A, Table A1 and Table A2. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16737 Copyr
9、ight 2012 General Motors Company All Rights Reserved August 2012 Page 2 of 5 3.2 Nomenclature. Grease type, thickener type, and consistency are defined using the following nomenclature: 3XY#, where: 3 means silicone oil-based grease. XY are letters designating thickener types shown in 3.1.2.1. # is
10、a number from one to three (1 to 3) indicating National Lubricating Grease Institute (NLGI) consistency. (Example: 3ST2 is silicone oil-based grease, amorphous silica thickener, NLGI consistency 2.) 4 Manufacturing Process Not applicable. 5 Rules and Regulations 5.1 Legal Regulations. All materials
11、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 Rejection. All shipments of material or parts under con
12、tract 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 notification and approval by Engineering. Lack of notific
13、ation 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 this specification without dependence upon purcha
14、sers 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 program (round robin) that is approved by the F
15、uels, 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 Source Approval. No shipment shall be made by any
16、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 Sheets (MSDS/SDS). For new product submissions, o
17、r 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 Chemicals (GHS) requirements or other country-specifi
18、c 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 standard must comply with the requirements of GMW30
19、59, 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 standard number have been qualified by Engineering as meeting the requirements of t
20、his standard. For other GM locations, the responsible Engineering group should be contacted to obtain the approved source in that individual country. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16737 Copyrigh
21、t 2012 General Motors Company All Rights Reserved August 2012 Page 3 of 5 7 Notes 7.1 Glossary. MATSPC: Global repository of GM Approved Materials for corresponding GM Engineering Standards. LT: Designation for silicone grease containing lithium-based soap thickener (lithium 12-hydroxystearate, or l
22、ithium complex). PT: Designation for fluorinated grease containing PTFE thickener. ST: Designation for silicone grease containing amorphous silica thickener. 7.2 Acronyms, Abbreviations, and Symbols. A/C Air Conditioning GHS Globally Harmonized System of Classification and Labeling of Chemicals GSSL
23、T Global Subsystem Leadership Team MSDS Material Safety Data Sheet NLGI National Lubricating Grease Institute PTFE Polytetrafluoroethylene SDS Safety Data Sheet 8 Coding System This standard shall be referenced in other documents, drawings, etc., as follows: Material per GMW16737 9 Release and Revis
24、ions This standard was originated in November 2011. It was first approved by the Fuels, Fluids, and Lubricants Global Subsystem Leadership Team (GSSLT) in February 2012. It was first published in February 2012. Issue Publication Date Description (Organization) 1 FEB 2012 Initial publication. 2 AUG 2
25、012 Added Regional Cross Reference Table. (Fuels, Fluids, and Lubricants Global Subsystem Leadership Team) Cross Reference of Regional Specifications Specification Region GMW Category Equivalent Specification Comments 9309827 GMB 3LT2 - Service range -50 C to 200 C 9309836 GMB/SGM 3LT1 B 040 1132 Se
26、rvice range -55 C to 180 C 9309912 GMB 3LT2 B 040 0571 Service range -55 C to 180 C 9309994 SGM 3LT2 B 040 0571 - 94545063 GMK 3LT1 EDS-M-8122 Service range -60 C to 170 C 9985432 GMNA 3ST2 - - 9985493 GMNA 3PT2 - Service range -40 C to 200 C 9985513 GMNA 3LT2 - Service range -40 C to 200 C 9986148
27、GMNA 3LT1 - Service range -40 C to 150 C 9986172 GMNA 3PT1 - Service range -40 C to 200 C Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16737 Copyright 2012 General Motors Company All Rights Reserved August 201
28、2 Page 4 of 5 Specification Region GMW Category Equivalent Specification Comments 9986373 GMNA 3ST2 - Meets dielectric strength requirements established by Ignition Product Management Team HN1014 GM Holden 3LT1 B 040 0571 Service range -73 C to 180 C HN1021 GM Holden 3ST3 - Service range -40 C to 20
29、0 C HN1731 GM Holden 3ST2 9985432 Service range -55 C to 200 C HN1759 GM Holden 3LT2 B 040 0571 Service range -40 C to 200 C HN2007 GM Holden 3LT2 - - Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-GM WORLDWIDE ENGINEERING STANDARDS GMW16737 Copyrig
30、ht 2012 General Motors Company All Rights Reserved August 2012 Page 5 of 5 Appendix A A1 Consistency and Properties A1.1 Consistency for Performance Levels 3ST1, 3LT1, 3PT1, 3ST2, 3LT2, 3PT2, 3ST3, 3LT3, and 3PT3. See Table A1. Table A1: Consistency for Performance Levels Property Test Method Units
31、3ST1, 3LT1, 3PT1 3ST2, 3LT2, 3PT2 3ST3, 3LT3, 3PT3 Consistency, Worked Penetration ASTM D217 DIN ISO 2137 mm/10 310 to 340 265 to 295 220 to 250 A1.2 Properties for Performance Levels: 3ST1, 3LT1, 3PT1, 3ST2, 3LT2, 3PT2, 3ST3, 3LT3, and 3PT3. See Table A2. Table A2: Properties for Performance Levels
32、 Property Test Method Units 3ST1 3ST2 3ST3 3LT1 3LT2 3LT3 3PT1 3PT2 3PT3 Dropping Point ASTM D566 ASTM D2265 DIN ISO 2176 C 260 (non-melting) 200 250 Oil Separation ASTM D6184 % Maximum 1 3 3 Corrosion Resistance ASTM D1743 Rating Not applicable Pass Pass DIN 51802 Rating, Maximum 1 1 Water Resistan
33、ce ASTM D1264 % Maximum at 80 C Not applicable 5 5 DIN 51807 Valuation after 3 h at 90 C 1 1 Low Temperature Performance ASTM D1478 Maximum Starting Torque (Nm) at -40 C Not applicable 0.25 0.25 Maximum running Torque (Nm) at -40 C 0.15 0.15 DIN 51805 Maximum Pressure (mbar) Not applicable 1400 at -50 C 1400 at -50 C Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
