1、 ENGINEERING MATERIAL SPECIFICATIONDate Action Revisions 2010 08 09 Activated C. Ved, NAPrinted copies are uncontrolled Copyright 2010 Ford Global Technologies, LLC Page 1 of 6 FLUID, AUTOMATIC TRANSMISSION OPTIMIZED FOR ANTI SQUAWK PERFORMANCE WSS-M2C938-A2 1. SCOPE The material defined by this spe
2、cification is for factory fill automatic transmission fluid (ATF) composed of base oil and additives for optimized anti squawk performance of shifting clutches. 2. APPLICATION This specification is released for factory fill application of various automatic transmissions. This material consists of ap
3、proved WSS-M2C938-A ATF and anti squawk top treat (friction modifier). 3. REQUIREMENTS Material specification requirements are to be used for initial qualification of materials. 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Stan
4、dard Requirements for Production Materials (WSS-M99P1111-A). This material is made of approved (and qualified per WSS-M2C938-A specification) ATF and addition of friction modifier to improve anti squawk performance of fluid. 3.2 COLOR Red (ISO 2092) 3.3 VISCOSITY 3.3.1 At 100 C 6.2 mm2/sec max (ISO
5、3104, ASTM D 445) 3.3.2 At -40 C 12000 mPa.s max (DIN 51398, ASTM D 2983) 3.3.3 Shear Stability (CEC L-45-T93) After 20 hrs KRL, KV at 100 C 5.5 mm2/s, min After 40 hrs KRL, KV at 100 C 5.0 mm2/s, min 3.3.4 After NOACK Test, (ASTM D 5800, 150 C, 2 hr, Modified NOACK Test) 3.3.4.1 Viscosity at -40 C
6、max change 2000 mPa.s 3.3.4.2 Evaporation loss 10% max ENGINEERING MATERIAL SPECIFICATIONWSS-M2C938-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 2 of 6 3.4 FLASH POINT (ASTM D 92) 180 C min 3.5 DENSITY Report Value (ISO 12185 at 15 C) 3.6 ANTI FOAMING PROPERT
7、IES (ASTM D 892) Sequence I 50 / 0 ml max Sequence II 50 / 0 ml max Sequence III 50 / 0 ml max Sequence IV 100 / 0 ml max (ASTM D 6082-01) 3.7 MOLYDBENUM IDENTIFICATION 15 to 25 ppm (XRF-Mo, ASTM D4927) 3.8 MOISTURE 0.05% max (ASTM D6304) 3.9 OXIDATION TESTS (Modified FLTM BJ 110-04, 155 C +/- 1) Le
8、ad Coupon Weight Loss, 100 hrs, 0.5% max Pentane Insolubles, 300 hrs 0.35% max Differential Infrared Carbonyl Absorbance 300 hrs 15/cm max Total Acid Number Change, 300 hrs, 1.5 max % Viscosity Change at 40 C, 300 hrs, 10% max Copper Strip Rating, 300 hrs, 3B max Aluminum Strip Rating, 300 hrs, max.
9、 No Varnish Sludge, 300 hrs, max. No Sludge ENGINEERING MATERIAL SPECIFICATIONWSS-M2C938-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 3 of 6 3.10 FRICTIONAL PERFORMANCE TESTS 3.10.1 Squawk Performance Test Attachment I (GK test rig, BW 6510 friction material,
10、 certified non squawking plates approved by Ford) Fresh ATF 1.5 N/mm2, min pressure 3.10.2 Low Speed Friction Evaluation (LVFA, 0-300 rpm, 120 C, SD-1777 friction material), ATF used Fresh ATF Friction Materials Coefficient of Friction SD 1777 0.11 0.14 3.11 CLEANLINESS LEVEL - /18/15 (ISO 4406. At
11、supplier manufacturing site prior to unloading into shipping containers) 3.12 ODOR The fluid manufactured to this specification shall meet the Transmission and Driveline Engineering (TDE) Odor Test procedure. The fluids shall be found to be acceptable when it receives an acceptability rating of 2 or
12、 less. 3.13 TOXICITY The fluid manufactured and formulated to this specification must not contain skin sensitization components. The entire formulation must be reviewed and approved for use by Ford Toxicology Department. MSDS must accompany all containers other than tank cars quantities and Ford Tox
13、icology Identification Number must be prominently displayed. 3.14 QUALITY CONTROL/SUPPLIER TESTING Material compliance for this base material (WSS-M2C938-A) must be in compliance per WSS-M2C938-A specification and 3.7 of this specification (page 2). Testing required on every batch is: 3.2, 3.3 (New
14、at 100 C only), 3.4, 3.7, 3.8 and 3.11. Supplier to check with Transmission and Driveline material engineering for list of current production seals and gasket materials. Supplier in-house friction test results are acceptable after concurrence with the Product engineering design max Seq, IV; max. 100
15、 mL _ _ Oxidation Tests (300 hrs, 155 deg C) Lead Coupon Weight Loss, 100 hrs, max 0.5% _ _ Pentane Insolubles, 300 hrs, max 0.35% _ _ Differential Infrared Carbonyl Absorbance 300 hrs, max15/cm _ _ Total Acid Number Change, 300 hrs, max 1.5 _ _ % Viscosity Change at 40 C, 300 hrs, max 10% _ _ Coppe
16、r Strip Rating, 300 hrs, max 3B _ _ Aluminum Strip Rating, 300 hrs, max. No Varnish _ _ Sludge, 300 hrs, max. No Sludge _ _ ENGINEERING MATERIAL SPECIFICATIONWSS-M2C938-A2 Printed copies are uncontrolled Copyright 2010, Ford Global Technologies, LLC Page 6 of 6 Attachment III Supplier_ Date_ Product
17、 Name_ Product Code_ Blend Plant Location_ BASE STOCKS Manufacturing Limits Base Oil Viscosity at Viscosity at Sulfur, % Pour Point, C Volume % 100 C mm2/s 40 C mm2/s A _ _ _ _ _ B _ _ _ _ _ C _ _ _ _ _ D _ _ _ _ _ Refinery Name & Location Process Type Crude A _ _ _ B _ _ _ C _ _ _ D _ _ _ Additives Type/ Manufacturer Code Description Carrier Oil Additive in Function Name in additive in Finished Oil Vol, % Vol, % E _ _ _ _ _ F _ _ _ _ _ G _ _ _ _ _ H _ _ _ _ _ Signature_ Title_
