1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 12 02 Revised See Summary of Revisions C. Mracna, NA 2004 05 20 Revised Para 3.0 inserted; para 3.1, 3.2, 3.3, 3.6 & 4 deleted 2000 01 06 Activated L. MastrofrancescoPrinted copies are uncontrolled Copyright 2010, Ford Global Technologies
2、 LLC Page 1 of 2 LUBRICANT, SILICONE, PTFE/ADDITIVES WSS-M1C263-A 1. SCOPE The material defined by this specification is a synthetic lubricating compound consisting of a dimethyl polysiloxane fluid, PTFE, and other additives to provide low friction properties. 2. APPLICATION This specification was
3、released originally for a compound to be used on brake caliper pins where good rubber to metal or plastic to metal lubrication is required. The lubricant is suitable for operating temperatures between -40 and + 150 C. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppli
4、ers and part producers must conform to the Companys Standard Requirements For Production Materials 3.2 COLOR White 3.3 PENETRATION, tenths of a millimeter 265 - 315 (ASTM D 217, DIN ISO 2137, unworked) 3.4 BLEED 2.0% max (MIL-S-791b, Method 321.2, 24 h at 150 C) 3.5 EVAPORATION 2.0% max (MIL-S-791b,
5、 Method 321.2, 24 h at 150 C) 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Grease approved to this specification should have the following typical properties. 4.1 DROPPING POINT 204 C min (ASTM D 56
6、6) 4.2 OXIDATION STABILITY 15 kPa max (ASTM D 942 or DIN 51808, pressure drop in 100 h) 4.3 WATER SPRAY-OFF 1.0% max (ASTM D 4049, 5 minutes at 38 C) 4.4 CORROSION 10% max (ASTM B 117, 1 mm thickness, 500 h) 4.5 DIELECTRIC CONSTANT 3.2 (ASTM D 150) ENGINEERING MATERIAL SPECIFICATIONWSS-M1C263-A Prin
7、ted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 2 4.6 LOW TEMPERATURE TORQUE (ASTM D 1478 or IP 186, -20 C) Starting 426 gfcm max Running 240 gfcm max 4.7 OIL SEPARATION 1.0% max (ASTM D 1742, DIN 51817, FTMS 791 C 321.3,) 4.8 INTERFACE COMPATIBILITY Production re
8、presentative materials specific to the application should be used for the following tests. 4.8.1 Chemical Attack 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 c
9、ontact with paint surfaces, ex. E-coat and powder coat. 4.8.2 Resistance to Stress Cracking (FLTM BO 127-03) 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
10、as PC, ABS, PC+ABS, ASA or acrylic. 4.8.3 Elastomer Compatibility, EPDM (ASTM D 471, 168 h at 75 C) Volume change 15% Hardness change, Durometer A - 8 5. SUMMARY OF REVISIONS 2010 12 02 Lot certification tests moved to requirements. Added information on interface compatibility which are requirements in WSS-M13P13-A.
