1、 ENGINEERING MATERIAL SPECIFICATION Date Action Revisions Rev. 4 2014 07 18 Revised Updated A4 para 3.7.4, See summary of revisions G. Kowalski, NA 2010 01 06 Revised A6 - Changes made to 3.4 and 3.9 A. Reaume, NA 1991 11 05 NEO1E1012 Released A4 and A6. A8 released 1998/05/12. A11 released 2013/04/
2、18 E. J. Duda Controlled document at www.MATS Copyright 2014, Ford Global Technologies, LLC Page 1 of 5 SEALANT, SILICONE RUBBER, OXIME CURED, LOW VISCOSITY WSE-M4G323-A4 SEALANT, SILICONE RUBBER, OXIME CURED, VERY HIGH VISCOSITY WSE-M4G323-A6 SEALANT, SILICONE RUBBER, OXIME CURED, HIGH VISCOSITY WS
3、S-M4G323-A8 SEALANT, SILICONE RUBBER, OXIME CURED, HIGH VISCOSITY, BLACK WSS-M4G323-A11 1. SCOPE The material defined by this specification is a one component thixotropic spreadable silicone rubber based adhesive/sealant. It is capable of being pumped, metered and distributed into a gasket profile.
4、These materials are ready for use as received, requiring no catalyst or heat cure. 2. APPLICATION This specification was released originally for materials used for formed-in-place gaskets such as engine oil pan, rocker cover, cylinder block or oil pump, where high operating temperatures (up to 204 C
5、) may be encountered. WSE-M4G323- A4 Low viscosity, low modulus oxime cured material with limited blowout resistance and long assembly time and good adhesion between steel to aluminum and aluminum to aluminum on clean and oiled panels. This material has very poor resistance to coolant/water and must
6、 not be used for these applications. Blow out resistance is low in gaps above 0.5mm. A6 Very high viscosity, medium modulus, oxime cured material with excellent blowout resistance and long assembly time, good oil resistance and excellent adhesion and robustness to joint movement on oiled steel and a
7、luminum panels. This material has very poor resistance to coolant/water and must not be used for these applications. WSS-M4G323- A8 High viscosity, high modulus, oxime cured material with very good blowout resistance and low assembly time, dependable oil resistance, good adhesion and robustness to j
8、oint movement on oiled steel and aluminum panels. This material is used primarily for driveline sealing but also has good resistance to coolant/water. A11 High viscosity, medium modulus, oxime cured material with excellent blowout resistance and long assembly time, good oil resistance and excellent
9、adhesion and robustness to joint movement on oiled steel and aluminum panels. This material has very poor resistance to coolant/water and must not be used for these applications. ENGINEERING MATERIAL SPECIFICATION WSE-M4G323-A4, A6 WSS-M4G323-A8, A11 Copyright 2014, Ford Global Technologies, LLC Pag
10、e 2 of 5 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 SPECIFIC GRAVITY (ASTM D792, Method A) A4 A6 A8 A11 1.30 1.37 1.30 1.41 1.44 1.49 1.20 1
11、.40 3.3 EXTRUSION RATE, s Test Method: Time to dispense 50 cc through a stainless steel nozzle with a 3.2 +/- 0.13 mm orifice and 50 +/- 0.13 mm in length at 448 kPa pressure using a #250 Semco gun and 170 g PE cartridge assembly. Start the test by dispensing 10 g and then timing the next 50 cc. To
12、convert from g to cc, multiply by specific gravity. A4 A6 A8 A11 30 150 1400 2400 500 1600 950 1500 3.4 BLOW OUT RESISTANCE, seconds, minimum (ASTM F2523, Method A, 14 kPa pressure, cured for 1 minute and 30 minutes at 23 +/- 2 C, 50 % R.H) One minute cure time: Gap, 0 mm 60 60 60 60 Gap, 0.25 mm 60
13、 60 60 60 Gap, 0.5 mm 60 60 60 60 Gap, 0.75 mm NR 60 60 60 Gap, 1.00 mm NR 60 NR NR 30 minutes cure time: Gap, 0 mm 60 60 60 60 Gap, 0.25 mm 60 60 60 60 Gap, 0.5 mm 60 60 60 60 Gap, 0.75 mm NR 60 60 60 Gap, 1.00 mm NR 60 60 60 NR= material not recommended to be pressure tested at this gap without fu
14、ll cure. 3.5 CURE RATE (Assembly Time), minutes (FLTM BV 127-02 or FLTM BV 125-01, at 50 +/- 5% relative humidity and 23 +/- 2 C, max time at which no material transfers.) A4 A6 A8 A11 12 30 7 24 5 -20 7 - 24 3.6 TOTAL SILICONE VOLATILES 0.6 max (FLTM AV 102-01, cured 24 h at 23 +/- 2 C and 50 +/- 5
15、% R.H.) ENGINEERING MATERIAL SPECIFICATION WSE-M4G323-A4, A6 WSS-M4G323-A8, A11 Copyright 2014, Ford Global Technologies, LLC Page 3 of 5 3.7 CURED PROPERTIES Properties determined after curing the sealant for 168 +/- 2 h at 23 +/- 2 C and 50 +/- 5% relative humidity on a 2.0 mm cross section. 3.7.1
16、 Original Tensile Strength, Elongation, and Modulus (ASTM D412, Die C) A4 A6 A8 A11 Tensile Strength, MPa, min 1.8 1.7 2.8 1.7 Elongation, %, min 400 400 120 400 Modulus at 100% el, MPa 0.40-1.1 0.5-1.7 1.9-2.6 0.50-0.95 3.7.2 Durometer Hardness (ASTM D2240, Shore A, instantaneous) A4 A6 A8 A11 31 4
17、5 31 52 45 65 31 - 46 3.7.3 Oil Immersion (ASTM D471, 168 h at 150 +/- 2 C, ASTM SF 105 oil, after cure per para 3.7) A4 A6 A8 A11 Tensile Change, % max -20 -28 -30 -10 Elongation Change, %, max -28 -28 +50 -40 Durometer Change, max -16 -15 -10 -20 Volume Change, % max +9 +14 +20 +40 3.7.4 High Temp
18、erature Resistance (ASTM D573, 168 h at 175 +/- 2 C, after cure per para 3.7) A4 A6 A8 A11 Tensile Change, % -10 max +30/-10 +50/-0 +40/-10 Elongation Change,%, max -45 -60 -50 -60 Durometer Change +/-10 +18/-0 +20/-0 +22/-0 3.7.5 Immersion in currently approved transmission fluids of affected model
19、 year (ISO 1817/ASTM D471, 168 h at 150 +/- 2 C, after cure per para 3.7, -A8 materials only) Fluids include: Automatic Transmission Fluid: WSS-M2C938-A, Dual Clutch Transmission Fluid (WSS-M2C200-D2) and Rear Axle Fluid (WSL-M2C192-A + 6% volume EST-M2C118-A friction modifier) or as directed by Tra
20、nsmission let flash for 15 minutes. A4 A6 A8 A11 2024 Alclad Al to 1010 Steel Adhesion, MPa, min 1.0 1.0 0.6 0.8 Joint Movement, mm, min 6.0 6.0 1.1 4.0 2024 Alclad Al to Aluminum Adhesion, MPa, min 1.2 1.2 0.7 0.8 Joint Movement, mm, min 6.0 6.0 1.1 5.0 3.8.3 After Oil Immersion (ASTM SF 105 oil, 1
21、68 h at 150 +/- 2 C) CLEAN PANELS (Prepare panels per 3.11.1 prior to immersion) A4 A6 A8 A11 2024 Alclad Al to Aluminum Adhesion, MPa, min 1.0 0.7 1.5 0.5 Joint Movement, mm, min 4.5 4.5 2.3 6.0 OILED PANELS (Prepare panels per 3.11.2 prior to immersion.) A4 A6 A8 A11 2024 Alclad Al to Aluminum Adh
22、esion, MPa, min 0.9 0.7 1.4 0.3 Joint Movement, mm, min 5.0 4.5 2.1 4.5 ENGINEERING MATERIAL SPECIFICATION WSE-M4G323-A4, A6 WSS-M4G323-A8, A11 Copyright 2014, Ford Global Technologies, LLC Page 5 of 5 3.9 STORAGE STABILITY 12 months min (From date of receipt at Ford Motor Company) When stored in se
23、aled unopened containers out of direct sunlight at ambient temperatures between 10 and 27 C. The supplier must label each container to indicate expiration date of the material and production usage beyond expiration date is not permitted. Containers should always be kept sealed when not in use. After
24、 opening, a plug of cured material may form across the container opening during storage. This may easily be removed and does not affect the remaining contents. 3.10 QUALITY The material shall be of uniform quality, free from foreign materials and properties detrimental to normal production use. 3.11
25、 NON-INTERCHANGEABILITY OF MATERIALS Only approved materials all from the same production source shall be used in conjunction with one another. 4. GENERAL INFORMATION The information given below is provided for clarification and assistance in meeting the requirements of this specification. Contact
26、for questions concerning Engineering Material Specifications. 5. SUMMARY OF REVISIONS 2014 07 18 Updated High Temp Resistance, para 3.7.4 for A4 from +0/-10 to -10 max 2013 04 18 Released A11, reformatted -A4, -A6 and -A8; replaced FLTM BV 126-01 with ASTM F 2523 for 3.4, separated N-status specs . Added description of joint movement for 3.11 2010 01 06 A6 - Changes made to 3.4 and 3.9 2006 06 12 Standard requirements consolidated into WSS-M99P1111-A.
