1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 0 2012 02 20 Activated A. Wedepohl, FNA Controlled document at www.MATS Copyright 2012, Ford Global Technologies, LLC Page 1 of 2 GREASE, PERFLUOROPOLYETHER OIL, PTFE THICKENED WSS-M1C280-A 1. SCOPE The material defined by this specifica
2、tion is a white, creamy grease based on perfluoropolyether (PFPE) oil and thickened with polytetrafluoroethylene (PTFE). NLGI Grade 2. 2. APPLICATION This specification was released originally to lubricate the rubber spark plug boots and prevent them from tearing during assembly. 3. REQUIREMENTS 3.1
3、 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 COLOR White (Visual) 3.3 WORKED PENETRATION, tenths of a millimeter 268 292 (ASTM D217, DIN ISO 2137, 60 stroke) 3.4
4、 BASE OIL VISCOSITY (ASTM D445, DIN 51562, ISO 3104) 3.4.1 Kinematic Viscosity at 40 C 40 60 mm2/s 3.4.2 Kinematic Viscosity at 100 C 6.5 9.0 mm2/s 3.5 OIL SEPARATION FROM GREASE 10% max (ASTM D6184, 30h at 99C) 4. GENERAL INFORMATION This information given below is provided for clarification and as
5、sistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. Grease approved to this specification should have the following typical properties. 4.1 PENETRATION (ASTM D217, DIN ISO 2137) 4.2.1 Worked Penetration, 60 strokes 268 29
6、2 4.2.2 Prolonged Worked Penetration, 100,000 strokes 257 (-6% from orig) 4.2 DROPPING POINT 171 C min (ASTM D556, ASTM D2265, DIN ISO 2176) ENGINEERING MATERIAL SPECIFICATION WSS-M1C280-A Copyright 2012 Ford Global Technologies, LLC Page 2 of 2 4.3 OIL SEPARATION FROM GREASE 2.7% (ASTM D6184, 30h a
7、t 99C) 4.4 OIL SEPARATION 2.7% (ASTM D1742, DIN 51817 or FTMS 791 C 321.3, 30hr at 100C) 4.5 EVAPORATION (ASTM D2595, 22 hours) 4.5.1 22 hours at 99 C 5.5% 4.5.2 22 hours at 204 C 21.0% 4.6 OXIDATION STABILITY 6.89 kPa (ASTM D942 or DIN 51808, 100hr at 99C) (+1 psi) 4.7 COPPER CORROSION 1B (ASTM D40
8、48, 24hr at 100C) 4.8 WATER SPRAYOFF 60.3% (ASTM D2265, DIN 51807 T01, 5 min at 38 C) 4.9 GREASE LIFE ESTIMATION (ASTM E1858 method A) DSC at 210C No exotherm after 120 min DSC at 250C No exotherm after 240 min Weight loss of grease at test end: -21.05% 4.10 INTERFACE COMPATIBILITY 4.10.1 Chemical A
9、ttack to Painted Surfaces (FLTM BJ 126-01) Note: Not tested for initial application of this grease. Grease must be tested for chemical attack to painted surfaces for applications that come in contact with paint surfaces, ex. E-coat and powder coat. 4.10.2 Resistance to Stress Cracking (FLTM BO 127-0
10、3) Note: Not tested for initial application of this grease. Grease must be tested for resistance to stress cracking when used for additional applications that come in contact with polymers such as PC, ABS, PC+ABS, ASA or acrylic 4.10.3 Elastomer Compatibility, Silicone Rubber per WSS-M2D8-B2 (ASTM D4289, DIN 53505, DIN 53504, SAE AMS 3217/2A, 70 hrs, 100 C) 4.10.3.1 Volume Swell +0.32% 4.10.3.2 Hardness Change, Durometer A Points 0%
