1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 07 30 Revised See Summary of revisions paragraph 5 L. Schmalz, NA 2004 04 21 Revised Para 3.0 inserted, para 3.1, 3.2, 3.3, 3.6 & 4 deleted 2000 09 05 Activated Replaces WSD-M1C238-A K. F. Cosgrave Printed copies are uncontrolled Copyrigh
2、t 2010, Ford Global Technologies, LLC Page 1 of 2 GREASE, POLYUREA, NLGI 2, DOOR CHECK ARM WSS-M1C238-B 1. SCOPE The material defined by this specification is a grease consisting of mineral oil, polyurea thickener and other additives to give the desired characteristics. 2. APPLICATION This specifica
3、tion was released originally for grease used to lubricate and provide corrosion resistance for door check arm assemblies. 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materia
4、ls (WSS-M99P1111-A). 3.2 COLOR Light Brown (Visual) 3.3 WORKED PENETRATION, tenths of a millimeter 290 - 320 (ASTM D 217, DIN ISO 2137, 60 strokes) 3.4 DROPPING POINT 240 oC min (ASTM D 566 or ASTM D 2265, DIN ISO 2176) 4. GENERAL INFORMATION The information given below is provided for clarification
5、 and assistance in meeting the requirements of this specification. Grease approved to this specification should have the following typical properties. 4.1 POLYUREA THICKENER 14% min (ASTM D 128) 4.2 MINERAL OIL 75% min (ASTM D 128) 4.3 MINERAL OIL 4.3.1 Viscosity At 40 C 490 mm2/sec min (ASTM D 445,
6、 DIN 51562) 4.3.2 Viscosity At 100 C 32 mm2/sec min(ASTM D 445, DIN 51562) ENGINEERING MATERIAL SPECIFICATIONWSS-M1C238-BPrinted copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 2 4.4 EMCOR CORROSION (ASTM D 6138, DIN 51802, 168 hrs) Distilled water 0/0 3% sodium chlor
7、ide 0/0 5% sodium chloride 1/1 4.5 WATER WASHOUT 10% max (ASTM D 1264, DIN 51807 T02 at 38 C) 4.6 OIL SEPARATION 10% max (ASTM D 1742 or Federal Standard 791C, Method 321.3, DIN 51817) 4.7 FOUR BALL WELD LOAD 245 kgf (ASTM D 2596, DIN 51350 T 4 4.8 INTERFACE COMPATIBILITY Production representative m
8、aterials specific to the application should be used for the following tests. 4.8.1 Chemical Attack to Painted Surfaces No staining or softening (FLTM BJ 126-01) of automotive finishes 4.8.2 Resistance to Stress Cracking (FLTM BO 127-03) Note: Not tested for initial application of this grease. Grease
9、 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. 4.8.3 Elastomer Compatibility (ASTM D 4289, 70 h, 100 C, DIN 53505, DIN 53504) Volume change Hardness change, max Tensile Strength chang
10、e Note: Not tested for initial 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. 5. SUMMARY OF REVISIONS 2010 07 10 Added Color, Penetration, and Dropping point to Requirements. Added the following to General Information: Thickener range, Mineral oil %, Viscosity, Emcor Corrosion, Water washout, Oil separation, Four ball weld load, Interface compatibility
