1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 2 2012 02 16 Revised See Summary of Revisions A. Wedepohl, FNA 2004 04 29 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.6 & 4 deleted 1993 05 03 NB00I10043054247 Released TRB BCF J.M. Showalter, FNA Controlled document at www.MATS Cop
2、yright 2012, Ford Global Technologies, LLC Page 1 of 3 GREASE, FLUORINATED ETHER OIL, PTFE THICKENED WSB-M1C242-A 1. SCOPE The material defined by this specification is a NLGI 2 grease based on medium viscosity perfluoropolyether oil thickened with PTFE. The lubricant is resistant to nonfluorinated
3、solvents and fuels. The operating temperature range is -50 to 225 C. 2. APPLICATION This specification was released originally to lubricate the electrical light switch rheostat-resistor assembly. It can also be used on the mechanical portion of switches and high insertion force connectors to lower m
4、ating forces. 3. REQUIREMENTS 3.1 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 PENETRATION 3.3.1 UNWORKED PENETRATION tenths of a millime
5、ter 250 min (ASTM D217, DIN ISO 2137, 0 stroke) 3.3.2 WORKED PENETRATION, tenths of a millimeter 265 295 (ASTM D217, DIN ISO 2137, 60 stroke) 3.4 COPPER CORROSION No corrosion (ASTM D4048, 24 hr at 150 C) 3.5 OIL SEPARATION FROM GREASE 10% max (ASTM D1742, DIN 51817 or FTMS 791 C 321.3, 24 hr at 150
6、 C) 3.6 EVAPORATION (ASTM D972, 24h at 150 C) 3% max 3.7 BASE OIL VISCOSITY (ASTM D445, DIN 51562, ISO 3104 3.7.1 Kinematic Viscosity at 100 C 13 mm2/s min 3.7.1 Kinematic Viscosity at 40 C 75 mm2/s max ENGINEERING MATERIAL SPECIFICATION WSB-M1C242-A Copyright 2012 Ford Global Technologies, LLC Page
7、 2 of 3 4. GENERAL INFORMATION This information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact for questions concerning Engineering Material Specifications. Grease approved to this specification should have the following typical p
8、roperties. 4.1 PENETRATION (ASTM D217, DIN ISO 2137) 4.1.1 Unworked Penetration 267 4.1.2 Worked Penetration, 60 strokes 281 4.1.3 Prolonged Worked Penetration, 100,000 strokes 288 4.2 DROPPING POINT None (ASTM D2265, DIN ISO 2176) 4.3 OXIDATION STABILITY (ASTM D942 or DIN 51808, 500hr at 100C) 13.8
9、 kPa 4.4 FOUR BALL WEAR 1.27 mm (IP 239, ASTM D2266-01, 1 hr, 1200 RPM, 40kg load) 4.5 LOW TEMPERATURE TORQUE (ASTM D1478) Starting Torque -40 C 914 g/cm Running Torque -40 C, 10 minutes 384 g/cm -40 C, 60 minutes 236 g/cm 4.6 INTERFACE COMPATIBILITY 4.6.1 Chemical Attack to Painted Surfaces (FLTM B
10、J 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. 4.6.2 Resistance to Stress Cracking (FLTM BO 127-03) Note: Not tested for initial a
11、pplication 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 4.6.3 Elastomer Compatibility (ASTM D 4289, 70 h, 100 C, DIN 53505, DIN 53504) Note: Not tested for init
12、ial application of this grease. Grease must be tested for elastomer compatibility when used for additional applications that come in contact with elastomers. Application specific elastomer should be used for testing instead of a reference elastomer. Determine change in volume, hardness change tensil
13、e strength and elongation. ENGINEERING MATERIAL SPECIFICATION WSB-M1C242-A Copyright 2012 Ford Global Technologies, LLC Page 3 of 3 5. SUMMARY OF REVISIONS 2012 02 16 Lot certification tests moved to requirements, all other requirements moved to general information. Added guidance on interface compatibility.
